Update ECM to KF 5.240.0 version

Update code to make it compile.

Signed-off-by: Juraj Oravec <jurajoravec@mailo.com>

CMakeLists.txt

@@ -16,7 +16,7 @@ set(KF_MIN_VERSION "5.240.0")
 
 # Find ECM, with nice error handling in case of failure
 include(FeatureSummary)
-find_package(ECM 5.78.0 CONFIG)
+find_package(ECM ${KF_MIN_VERSION} CONFIG)
 set_package_properties(ECM PROPERTIES TYPE REQUIRED DESCRIPTION "Extra CMake Modules." URL "https://invent.kde.org/frameworks/extra-cmake-modules")
 feature_summary(WHAT REQUIRED_PACKAGES_NOT_FOUND FATAL_ON_MISSING_REQUIRED_PACKAGES)
 set(CMAKE_MODULE_PATH ${ECM_MODULE_PATH} ${CMAKE_CURRENT_SOURCE_DIR}/cmake)

autotests/locationbartest.cpp

@@ -49,82 +49,82 @@ void LocationBarTest::loadActionBasicTest()
 {
     LocationBar::LoadAction action;
 
-    action = LocationBar::loadAction("http://kde.org");
+    action = LocationBar::loadAction(QSL("http://kde.org"));
     QCOMPARE(action.type, LocationBar::LoadAction::Url);
-    QCOMPARE(action.loadRequest.url(), QUrl("http://kde.org"));
+    QCOMPARE(action.loadRequest.url(), QUrl(QSL("http://kde.org")));
 
-    action = LocationBar::loadAction("kde.org");
+    action = LocationBar::loadAction(QSL("kde.org"));
     QCOMPARE(action.type, LocationBar::LoadAction::Url);
-    QCOMPARE(action.loadRequest.url(), QUrl("http://kde.org"));
+    QCOMPARE(action.loadRequest.url(), QUrl(QSL("http://kde.org")));
 
-    action = LocationBar::loadAction("localhost");
+    action = LocationBar::loadAction(QSL("localhost"));
     QCOMPARE(action.type, LocationBar::LoadAction::Url);
-    QCOMPARE(action.loadRequest.url(), QUrl("http://localhost"));
+    QCOMPARE(action.loadRequest.url(), QUrl(QSL("http://localhost")));
 
-    action = LocationBar::loadAction("localhost/test/path?x=2");
+    action = LocationBar::loadAction(QSL("localhost/test/path?x=2"));
     QCOMPARE(action.type, LocationBar::LoadAction::Url);
-    QCOMPARE(action.loadRequest.url(), QUrl("http://localhost/test/path?x=2"));
+    QCOMPARE(action.loadRequest.url(), QUrl(QSL("http://localhost/test/path?x=2")));
 
-    action = LocationBar::loadAction("host.com/test/path?x=2");
+    action = LocationBar::loadAction(QSL("host.com/test/path?x=2"));
     QCOMPARE(action.type, LocationBar::LoadAction::Url);
-    QCOMPARE(action.loadRequest.url(), QUrl("http://host.com/test/path?x=2"));
+    QCOMPARE(action.loadRequest.url(), QUrl(QSL("http://host.com/test/path?x=2")));
 
-    action = LocationBar::loadAction("not-url");
+    action = LocationBar::loadAction(QSL("not-url"));
     QCOMPARE(action.type, LocationBar::LoadAction::Search);
 
-    action = LocationBar::loadAction("not url with spaces");
+    action = LocationBar::loadAction(QSL("not url with spaces"));
     QCOMPARE(action.type, LocationBar::LoadAction::Search);
 
-    action = LocationBar::loadAction("falkon:about");
+    action = LocationBar::loadAction(QSL("falkon:about"));
     QCOMPARE(action.type, LocationBar::LoadAction::Url);
-    QCOMPARE(action.loadRequest.url(), QUrl("falkon:about"));
+    QCOMPARE(action.loadRequest.url(), QUrl(QSL("falkon:about")));
 }
 
 void LocationBarTest::loadActionBookmarksTest()
 {
     auto* bookmark = new BookmarkItem(BookmarkItem::Url);
-    bookmark->setTitle("KDE Bookmark title");
+    bookmark->setTitle(QSL("KDE Bookmark title"));
-    bookmark->setUrl(QUrl("http://kde.org"));
+    bookmark->setUrl(QUrl(QSL("http://kde.org")));
-    bookmark->setKeyword("kde-bookmark");
+    bookmark->setKeyword(QSL("kde-bookmark"));
     mApp->bookmarks()->addBookmark(mApp->bookmarks()->unsortedFolder(), bookmark);
 
     LocationBar::LoadAction action;
 
-    action = LocationBar::loadAction("http://kde.org");
+    action = LocationBar::loadAction(QSL("http://kde.org"));
     QCOMPARE(action.type, LocationBar::LoadAction::Url);
-    QCOMPARE(action.loadRequest.url(), QUrl("http://kde.org"));
+    QCOMPARE(action.loadRequest.url(), QUrl(QSL("http://kde.org")));
 
-    action = LocationBar::loadAction("kde-bookmark-notkeyword");
+    action = LocationBar::loadAction(QSL("kde-bookmark-notkeyword"));
     QCOMPARE(action.type, LocationBar::LoadAction::Search);
 
-    action = LocationBar::loadAction("kde-bookmark");
+    action = LocationBar::loadAction(QSL("kde-bookmark"));
     QCOMPARE(action.type, LocationBar::LoadAction::Bookmark);
     QCOMPARE(action.bookmark, bookmark);
-    QCOMPARE(action.loadRequest.url(), QUrl("http://kde.org"));
+    QCOMPARE(action.loadRequest.url(), QUrl(QSL("http://kde.org")));
 }
 
 void LocationBarTest::loadActionSearchTest()
 {
     SearchEngine engine;
-    engine.name = "Test Engine";
+    engine.name = QSL("Test Engine");
-    engine.url = "http://test/%s";
+    engine.url = QSL("http://test/%s");
-    engine.shortcut = "t";
+    engine.shortcut = QSL("t");
     mApp->searchEnginesManager()->addEngine(engine);
     mApp->searchEnginesManager()->setActiveEngine(engine);
 
     LocationBar::LoadAction action;
 
-    action = LocationBar::loadAction("search term");
+    action = LocationBar::loadAction(QSL("search term"));
     QCOMPARE(action.type, LocationBar::LoadAction::Search);
-    QCOMPARE(action.loadRequest.url(), QUrl("http://test/search%20term"));
+    QCOMPARE(action.loadRequest.url(), QUrl(QSL("http://test/search%20term")));
 
-    action = LocationBar::loadAction("t search term");
+    action = LocationBar::loadAction(QSL("t search term"));
     QCOMPARE(action.type, LocationBar::LoadAction::Search);
-    QCOMPARE(action.loadRequest.url(), QUrl("http://test/search%20term"));
+    QCOMPARE(action.loadRequest.url(), QUrl(QSL("http://test/search%20term")));
 
-    action = LocationBar::loadAction(" ttt-notsearch");
+    action = LocationBar::loadAction(QSL(" ttt-notsearch"));
     QCOMPARE(action.type, LocationBar::LoadAction::Search);
-    QCOMPARE(action.loadRequest.url(), QUrl("http://test/ttt-notsearch"));
+    QCOMPARE(action.loadRequest.url(), QUrl(QSL("http://test/ttt-notsearch")));
 }
 
 void LocationBarTest::loadAction_kdebug389491()
@@ -132,54 +132,54 @@ void LocationBarTest::loadAction_kdebug389491()
     // "site:website.com searchterm" and "link:website.com" are loaded instead of searched
 
     SearchEngine engine;
-    engine.name = "Test Engine";
+    engine.name = QSL("Test Engine");
-    engine.url = "http://test/%s";
+    engine.url = QSL("http://test/%s");
-    engine.shortcut = "t";
+    engine.shortcut = QSL("t");
     mApp->searchEnginesManager()->addEngine(engine);
     mApp->searchEnginesManager()->setActiveEngine(engine);
 
     LocationBar::LoadAction action;
 
-    action = LocationBar::loadAction("site:website.com searchterm");
+    action = LocationBar::loadAction(QSL("site:website.com searchterm"));
     QCOMPARE(action.type, LocationBar::LoadAction::Search);
-    QCOMPARE(action.loadRequest.url(), QUrl("http://test/site%3Awebsite.com%20searchterm"));
+    QCOMPARE(action.loadRequest.url(), QUrl(QSL("http://test/site%3Awebsite.com%20searchterm")));
 
-    action = LocationBar::loadAction("link:website.com");
+    action = LocationBar::loadAction(QSL("link:website.com"));
     QCOMPARE(action.type, LocationBar::LoadAction::Search);
-    QCOMPARE(action.loadRequest.url(), QUrl("http://test/link%3Awebsite.com"));
+    QCOMPARE(action.loadRequest.url(), QUrl(QSL("http://test/link%3Awebsite.com")));
 
-    action = LocationBar::loadAction("http://website.com?search=searchterm and another");
+    action = LocationBar::loadAction(QSL("http://website.com?search=searchterm and another"));
     QCOMPARE(action.type, LocationBar::LoadAction::Url);
-    QCOMPARE(action.loadRequest.url(), QUrl("http://website.com?search=searchterm and another"));
+    QCOMPARE(action.loadRequest.url(), QUrl(QSL("http://website.com?search=searchterm and another")));
 }
 
 void LocationBarTest::loadActionSpecialSchemesTest()
 {
     LocationBar::LoadAction action;
 
-    action = LocationBar::loadAction("data:image/png;base64,xxxxx");
+    action = LocationBar::loadAction(QSL("data:image/png;base64,xxxxx"));
     QCOMPARE(action.type, LocationBar::LoadAction::Url);
-    QCOMPARE(action.loadRequest.url(), QUrl("data:image/png;base64,xxxxx"));
+    QCOMPARE(action.loadRequest.url(), QUrl(QSL("data:image/png;base64,xxxxx")));
 
-    action = LocationBar::loadAction("falkon:about");
+    action = LocationBar::loadAction(QSL("falkon:about"));
     QCOMPARE(action.type, LocationBar::LoadAction::Url);
-    QCOMPARE(action.loadRequest.url(), QUrl("falkon:about"));
+    QCOMPARE(action.loadRequest.url(), QUrl(QSL("falkon:about")));
 
-    action = LocationBar::loadAction("file:test.html");
+    action = LocationBar::loadAction(QSL("file:test.html"));
     QCOMPARE(action.type, LocationBar::LoadAction::Url);
-    QCOMPARE(action.loadRequest.url(), QUrl("file:test.html"));
+    QCOMPARE(action.loadRequest.url(), QUrl(QSL("file:test.html")));
 
-    action = LocationBar::loadAction("about:blank");
+    action = LocationBar::loadAction(QSL("about:blank"));
     QCOMPARE(action.type, LocationBar::LoadAction::Url);
-    QCOMPARE(action.loadRequest.url(), QUrl("about:blank"));
+    QCOMPARE(action.loadRequest.url(), QUrl(QSL("about:blank")));
 
-    action = LocationBar::loadAction("javascript:test");
+    action = LocationBar::loadAction(QSL("javascript:test"));
     QCOMPARE(action.type, LocationBar::LoadAction::Url);
-    QCOMPARE(action.loadRequest.url(), QUrl("javascript:test"));
+    QCOMPARE(action.loadRequest.url(), QUrl(QSL("javascript:test")));
 
-    action = LocationBar::loadAction("javascript:alert(' test ');");
+    action = LocationBar::loadAction(QSL("javascript:alert(' test ');"));
     QCOMPARE(action.type, LocationBar::LoadAction::Url);
-    QCOMPARE(action.loadRequest.url(), QUrl("javascript:alert('%20test%20');"));
+    QCOMPARE(action.loadRequest.url(), QUrl(QSL("javascript:alert('%20test%20');")));
 }
 
 void LocationBarTest::loadAction_issue2578()
@@ -190,27 +190,27 @@ void LocationBarTest::loadAction_issue2578()
 
     LocationBar::LoadAction action;
 
-    action = LocationBar::loadAction("github.com");
+    action = LocationBar::loadAction(QSL("github.com"));
     QCOMPARE(action.type, LocationBar::LoadAction::Url);
-    QCOMPARE(action.loadRequest.url(), QUrl("http://github.com"));
+    QCOMPARE(action.loadRequest.url(), QUrl(QSL("http://github.com")));
 
-    action = LocationBar::loadAction("github");
+    action = LocationBar::loadAction(QSL("github"));
     QCOMPARE(action.type, LocationBar::LoadAction::Url);
-    QCOMPARE(action.loadRequest.url(), QUrl("http://github"));
+    QCOMPARE(action.loadRequest.url(), QUrl(QSL("http://github")));
 
-    action = LocationBar::loadAction("github/test/path");
+    action = LocationBar::loadAction(QSL("github/test/path"));
     QCOMPARE(action.type, LocationBar::LoadAction::Url);
-    QCOMPARE(action.loadRequest.url(), QUrl("http://github/test/path"));
+    QCOMPARE(action.loadRequest.url(), QUrl(QSL("http://github/test/path")));
 
-    action = LocationBar::loadAction("localhost");
+    action = LocationBar::loadAction(QSL("localhost"));
     QCOMPARE(action.type, LocationBar::LoadAction::Url);
-    QCOMPARE(action.loadRequest.url(), QUrl("http://localhost"));
+    QCOMPARE(action.loadRequest.url(), QUrl(QSL("http://localhost")));
 
-    action = LocationBar::loadAction("localhost/test/path");
+    action = LocationBar::loadAction(QSL("localhost/test/path"));
     QCOMPARE(action.type, LocationBar::LoadAction::Url);
-    QCOMPARE(action.loadRequest.url(), QUrl("http://localhost/test/path"));
+    QCOMPARE(action.loadRequest.url(), QUrl(QSL("http://localhost/test/path")));
 
-    action = LocationBar::loadAction("github.com foo bar");
+    action = LocationBar::loadAction(QSL("github.com foo bar"));
     QCOMPARE(action.type, LocationBar::LoadAction::Invalid);
 }
 
@@ -222,9 +222,9 @@ void LocationBarTest::loadAction_kdebug392445()
 
     LocationBar::LoadAction action;
 
-    action = LocationBar::loadAction("http://www.example.com/my%20beautiful%20page");
+    action = LocationBar::loadAction(QSL("http://www.example.com/my%20beautiful%20page"));
     QCOMPARE(action.type, LocationBar::LoadAction::Url);
-    QCOMPARE(action.loadRequest.url(), QUrl("http://www.example.com/my%20beautiful%20page"));
+    QCOMPARE(action.loadRequest.url(), QUrl(QSL("http://www.example.com/my%20beautiful%20page")));
 }
 
 FALKONTEST_MAIN(LocationBarTest)

autotests/passwordbackendtest.cpp

@@ -72,7 +72,7 @@ void PasswordBackendTest::cleanupTestCase()
     cleanup();
 
     reloadBackend();
-    foreach (const PasswordEntry &entry, m_entries) {
+    for (const PasswordEntry &entry : std::as_const(m_entries)) {
         m_backend->addEntry(entry);
     }
 }

autotests/qml/qmlbookmarksapitest.cpp

@@ -31,16 +31,16 @@ void QmlBookmarksApiTest::cleanupTestCase()
 
 void QmlBookmarksApiTest::testBookmarkTreeNodeType()
 {
-    auto type = BookmarkItem::Type(m_testHelper.evaluate("Falkon.Bookmarks.rootItem().type").toInt());
+    auto type = BookmarkItem::Type(m_testHelper.evaluate(QSL("Falkon.Bookmarks.rootItem().type")).toInt());
     QCOMPARE(mApp->bookmarks()->rootItem()->type(), type);
 
-    type = BookmarkItem::Type(m_testHelper.evaluate("Falkon.Bookmarks.toolbarFolder().type").toInt());
+    type = BookmarkItem::Type(m_testHelper.evaluate(QSL("Falkon.Bookmarks.toolbarFolder().type")).toInt());
     QCOMPARE(mApp->bookmarks()->toolbarFolder()->type(), type);
 }
 
 void QmlBookmarksApiTest::testBookmarkTreeNode()
 {
-    QObject *bookmark = m_testHelper.evaluateQObject("Falkon.Bookmarks.toolbarFolder()");
+    QObject *bookmark = m_testHelper.evaluateQObject(QSL("Falkon.Bookmarks.toolbarFolder()"));
     QVERIFY(bookmark);
     auto toolbarFolder = mApp->bookmarks()->toolbarFolder();
 
@@ -56,11 +56,11 @@ void QmlBookmarksApiTest::testBookmarkTreeNode()
 void QmlBookmarksApiTest::testBookmarksCreation()
 {
     auto item = new BookmarkItem(BookmarkItem::Url);
-    item->setTitle("Example Domain");
+    item->setTitle(QSL("Example Domain"));
-    item->setUrl(QUrl("https://example.com/"));
+    item->setUrl(QUrl(QSL("https://example.com/")));
-    item->setDescription("Testing bookmark description");
+    item->setDescription(QSL("Testing bookmark description"));
 
-    QObject *qmlBookmarks = m_testHelper.evaluateQObject("Falkon.Bookmarks");
+    QObject *qmlBookmarks = m_testHelper.evaluateQObject(QSL("Falkon.Bookmarks"));
     QVERIFY(qmlBookmarks);
 
     QSignalSpy qmlBookmarksSpy(qmlBookmarks, SIGNAL(created(QmlBookmarkTreeNode*)));
@@ -75,87 +75,87 @@ void QmlBookmarksApiTest::testBookmarksCreation()
     qRegisterMetaType<BookmarkItem*>();
     QSignalSpy bookmarksSpy(mApp->bookmarks(), &Bookmarks::bookmarkAdded);
 
-    auto out = m_testHelper.evaluate("Falkon.Bookmarks.create({"
+    auto out = m_testHelper.evaluate(QL1S("Falkon.Bookmarks.create({"
                                 "    parent: Falkon.Bookmarks.toolbarFolder(),"
                                 "    title: 'Example Plugin',"
                                 "    url: 'https://another-example.com'"
-                                "});");
+                                "});"));
     QVERIFY(out.toBool());
 
     QCOMPARE(bookmarksSpy.count(), 1);
     auto* createdItem = qvariant_cast<BookmarkItem*>(bookmarksSpy.at(0).at(0));
     QVERIFY(createdItem);
-    QCOMPARE(createdItem->title(), QString("Example Plugin"));
+    QCOMPARE(createdItem->title(), QSL("Example Plugin"));
 }
 
 void QmlBookmarksApiTest::testBookmarksExistence()
 {
     // in continuation from testBookmarksCreation
 
-    auto result = m_testHelper.evaluate("Falkon.Bookmarks.isBookmarked('https://example.com/')").toBool();
+    auto result = m_testHelper.evaluate(QSL("Falkon.Bookmarks.isBookmarked('https://example.com/')")).toBool();
     QVERIFY(result);
-    QCOMPARE(mApp->bookmarks()->isBookmarked(QUrl("https://example.com/")), result);
+    QCOMPARE(mApp->bookmarks()->isBookmarked(QUrl(QSL("https://example.com/"))), result);
 }
 
 void QmlBookmarksApiTest::testBookmarksModification()
 {
     // in continuation from testBookmarksExistence
 
-    QObject *qmlBookmarks = m_testHelper.evaluateQObject("Falkon.Bookmarks");
+    QObject *qmlBookmarks = m_testHelper.evaluateQObject(QSL("Falkon.Bookmarks"));
     QVERIFY(qmlBookmarks);
 
     QSignalSpy qmlBookmarksSpy(qmlBookmarks, SIGNAL(changed(QmlBookmarkTreeNode*)));
-    BookmarkItem* item = mApp->bookmarks()->searchBookmarks("https://example.com/").at(0);
+    BookmarkItem* item = mApp->bookmarks()->searchBookmarks(QSL("https://example.com/")).at(0);
-    item->setTitle("Modified Example Domain");
+    item->setTitle(QSL("Modified Example Domain"));
     mApp->bookmarks()->changeBookmark(item);
 
     QCOMPARE(qmlBookmarksSpy.count(), 1);
 
     auto *modified = qvariant_cast<QObject*>(qmlBookmarksSpy.at(0).at(0));
     QVERIFY(modified);
-    QCOMPARE(modified->property("title").toString(), QString("Modified Example Domain"));
+    QCOMPARE(modified->property("title").toString(), QSL("Modified Example Domain"));
 
     qRegisterMetaType<BookmarkItem*>();
     QSignalSpy bookmarksSpy(mApp->bookmarks(), &Bookmarks::bookmarkChanged);
 
-    auto out = m_testHelper.evaluate("Falkon.Bookmarks.update(Falkon.Bookmarks.get('https://another-example.com'),{"
+    auto out = m_testHelper.evaluate(QL1S("Falkon.Bookmarks.update(Falkon.Bookmarks.get('https://another-example.com'),{"
                                 "    title: 'Modified Example Plugin'"
-                                "})");
+                                "})"));
     QVERIFY(out.toBool());
 
     QCOMPARE(bookmarksSpy.count(), 1);
     auto* modifiedItem = qvariant_cast<BookmarkItem*>(bookmarksSpy.at(0).at(0));
     QVERIFY(modifiedItem);
-    QCOMPARE(modifiedItem->title(), QString("Modified Example Plugin"));
+    QCOMPARE(modifiedItem->title(), QSL("Modified Example Plugin"));
 }
 
 void QmlBookmarksApiTest::testBookmarksRemoval()
 {
     // in continuation from testBookmarksModification
 
-    QObject *qmlBookmarks = m_testHelper.evaluateQObject("Falkon.Bookmarks");
+    QObject *qmlBookmarks = m_testHelper.evaluateQObject(QSL("Falkon.Bookmarks"));
     QVERIFY(qmlBookmarks);
 
     QSignalSpy qmlBookmarksSpy(qmlBookmarks, SIGNAL(removed(QmlBookmarkTreeNode*)));
-    BookmarkItem* item = mApp->bookmarks()->searchBookmarks("https://example.com/").at(0);
+    BookmarkItem* item = mApp->bookmarks()->searchBookmarks(QSL("https://example.com/")).at(0);
     mApp->bookmarks()->removeBookmark(item);
 
     QCOMPARE(qmlBookmarksSpy.count(), 1);
 
     auto *removed = qvariant_cast<QObject*>(qmlBookmarksSpy.at(0).at(0));
     QVERIFY(removed);
-    QCOMPARE(removed->property("title").toString(), QString("Modified Example Domain"));
+    QCOMPARE(removed->property("title").toString(), QSL("Modified Example Domain"));
 
     qRegisterMetaType<BookmarkItem*>();
     QSignalSpy bookmarksSpy(mApp->bookmarks(), &Bookmarks::bookmarkRemoved);
 
-    auto out = m_testHelper.evaluate("Falkon.Bookmarks.remove(Falkon.Bookmarks.get('https://another-example.com'))");
+    auto out = m_testHelper.evaluate(QSL("Falkon.Bookmarks.remove(Falkon.Bookmarks.get('https://another-example.com'))"));
     QVERIFY(out.toBool());
 
     QCOMPARE(bookmarksSpy.count(), 1);
     auto* removedItem = qvariant_cast<BookmarkItem*>(bookmarksSpy.at(0).at(0));
     QVERIFY(removedItem);
-    QCOMPARE(removedItem->title(), QString("Modified Example Plugin"));
+    QCOMPARE(removedItem->title(), QSL("Modified Example Plugin"));
 }
 
 FALKONTEST_MAIN(QmlBookmarksApiTest)

autotests/qml/qmlclipboardapitest.cpp

@@ -30,7 +30,7 @@ void QmlClipboardApiTest::cleanupTestCase()
 
 void QmlClipboardApiTest::testClipboard()
 {
-    m_testHelper.evaluate("Falkon.Clipboard.copy('this text is copied')");
+    m_testHelper.evaluate(QSL("Falkon.Clipboard.copy('this text is copied')"));
     QCOMPARE(mApp->clipboard()->text(), QSL("this text is copied"));
 }
 

autotests/qml/qmlcookiesapitest.cpp

@@ -33,42 +33,42 @@ void QmlCookiesApiTest::cleanupTestCase()
 void QmlCookiesApiTest::testCookieAdditionRemoval()
 {
     QSignalSpy cookieAddSpy(mApp->cookieJar(), &CookieJar::cookieAdded);
-    m_testHelper.evaluate("Falkon.Cookies.set({"
+    m_testHelper.evaluate(QL1S("Falkon.Cookies.set({"
                      "    name: 'Example',"
                      "    url: '.example.com',"
                      "    expirationDate: Date.now() + 60*1000"
-                     "})");
+                     "})"));
     QTRY_COMPARE(cookieAddSpy.count(), 1);
     QNetworkCookie netCookie = qvariant_cast<QNetworkCookie>(cookieAddSpy.at(0).at(0));
     QCOMPARE(netCookie.name(), QByteArrayLiteral("Example"));
-    QObject *object = m_testHelper.evaluateQObject("Falkon.Cookies");
+    QObject *object = m_testHelper.evaluateQObject(QSL("Falkon.Cookies"));
     QVERIFY(object);
     QSignalSpy qmlCookieSpy(object, SIGNAL(changed(QVariantMap)));
     QNetworkCookie anotherNetCookie;
-    anotherNetCookie.setName(QString("Hello").toLocal8Bit());
+    anotherNetCookie.setName(QSL("Hello").toLocal8Bit());
-    anotherNetCookie.setDomain(".mydomain.com");
+    anotherNetCookie.setDomain(QSL(".mydomain.com"));
     anotherNetCookie.setExpirationDate(QDateTime::currentDateTime().addSecs(60));
     mApp->webProfile()->cookieStore()->setCookie(anotherNetCookie);
     QTRY_COMPARE(qmlCookieSpy.count(), 1);
     QVariantMap addedQmlCookieMap = QVariant(qmlCookieSpy.at(0).at(0)).toMap();
-    auto *addedQmlCookie = qvariant_cast<QObject*>(addedQmlCookieMap.value("cookie"));
+    auto *addedQmlCookie = qvariant_cast<QObject*>(addedQmlCookieMap.value(QSL("cookie")));
-    bool removed = addedQmlCookieMap.value("removed").toBool();
+    bool removed = addedQmlCookieMap.value(QSL("removed")).toBool();
     QCOMPARE(addedQmlCookie->property("name").toString(), QSL("Hello"));
     QCOMPARE(removed, false);
 
     mApp->webProfile()->cookieStore()->deleteCookie(netCookie);
     QTRY_COMPARE(qmlCookieSpy.count(), 2);
     QVariantMap removedQmlCookieMap = QVariant(qmlCookieSpy.at(1).at(0)).toMap();
-    auto *removedQmlCookie = qvariant_cast<QObject*>(removedQmlCookieMap.value("cookie"));
+    auto *removedQmlCookie = qvariant_cast<QObject*>(removedQmlCookieMap.value(QSL("cookie")));
-    removed = removedQmlCookieMap.value("removed").toBool();
+    removed = removedQmlCookieMap.value(QSL("removed")).toBool();
     QCOMPARE(removedQmlCookie->property("name").toString(), QSL("Example"));
     QCOMPARE(removed, true);
 
     QSignalSpy cookieRemoveSpy(mApp->cookieJar(), &CookieJar::cookieRemoved);
-    m_testHelper.evaluate("Falkon.Cookies.remove({"
+    m_testHelper.evaluate(QL1S("Falkon.Cookies.remove({"
                      "    name: 'Hello',"
                      "    url: '.mydomain.com',"
-                     "})");
+                     "})"));
     QTRY_COMPARE(cookieRemoveSpy.count(), 1);
     netCookie = qvariant_cast<QNetworkCookie>(cookieRemoveSpy.at(0).at(0));
     QCOMPARE(netCookie.name(), QByteArrayLiteral("Hello"));
@@ -80,20 +80,20 @@ void QmlCookiesApiTest::testCookieGet()
     QSignalSpy cookieAddSpy(mApp->cookieJar(), &CookieJar::cookieAdded);
 
     QNetworkCookie netCookie_1;
-    netCookie_1.setName(QString("Apple").toLocal8Bit());
+    netCookie_1.setName(QSL("Apple").toLocal8Bit());
-    netCookie_1.setDomain(".apple-domain.com");
+    netCookie_1.setDomain(QSL(".apple-domain.com"));
     netCookie_1.setExpirationDate(current.addSecs(60));
     mApp->webProfile()->cookieStore()->setCookie(netCookie_1);
 
     QNetworkCookie netCookie_2;
-    netCookie_2.setName(QString("Mango").toLocal8Bit());
+    netCookie_2.setName(QSL("Mango").toLocal8Bit());
-    netCookie_2.setDomain(".mango-domain.com");
+    netCookie_2.setDomain(QSL(".mango-domain.com"));
     netCookie_2.setExpirationDate(current.addSecs(120));
     mApp->webProfile()->cookieStore()->setCookie(netCookie_2);
 
     QNetworkCookie netCookie_3;
-    netCookie_3.setName(QString("Mango").toLocal8Bit());
+    netCookie_3.setName(QSL("Mango").toLocal8Bit());
-    netCookie_3.setDomain(".yet-another-mango-domain.com");
+    netCookie_3.setDomain(QSL(".yet-another-mango-domain.com"));
     netCookie_3.setExpirationDate(current.addSecs(180));
     mApp->webProfile()->cookieStore()->setCookie(netCookie_3);
 
@@ -101,20 +101,20 @@ void QmlCookiesApiTest::testCookieGet()
 
     QNetworkCookie actualMangoCookie;
     for (const QNetworkCookie &cookie : mApp->cookieJar()->getAllCookies()) {
-        if (cookie.name() == QSL("Mango") && cookie.domain() == QSL(".mango-domain.com")) {
+        if (QString::fromUtf8(cookie.name()) == QSL("Mango") && cookie.domain() == QSL(".mango-domain.com")) {
             actualMangoCookie = cookie;
         }
     }
 
-    QObject *mangoCookie = m_testHelper.evaluateQObject("Falkon.Cookies.get({"
+    QObject *mangoCookie = m_testHelper.evaluateQObject(QL1S("Falkon.Cookies.get({"
                      "    name: 'Mango',"
                      "    url: '.mango-domain.com'"
-                     "})");
+                     "})"));
     QVERIFY(mangoCookie);
     QCOMPARE(mangoCookie->property("name").toString(), QSL("Mango"));
     QCOMPARE(mangoCookie->property("expirationDate").toDateTime(), actualMangoCookie.expirationDate());
 
-    QList<QVariant> mangoCookies = m_testHelper.evaluate("Falkon.Cookies.getAll({name: 'Mango'})").toVariant().toList();
+    QList<QVariant> mangoCookies = m_testHelper.evaluate(QSL("Falkon.Cookies.getAll({name: 'Mango'})")).toVariant().toList();
     QCOMPARE(mangoCookies.length(), 2);
 }
 

autotests/qml/qmlhistoryapitest.cpp

@@ -36,17 +36,17 @@ void QmlHistoryApiTest::testAddition()
 {
     qRegisterMetaType<HistoryEntry>();
     QSignalSpy historySpy(mApp->history(), &History::historyEntryAdded);
-    m_testHelper.evaluate("Falkon.History.addUrl({"
+    m_testHelper.evaluate(QL1S("Falkon.History.addUrl({"
                      "    url: 'https://example.com',"
                      "    title: 'Example Domain'"
-                     "})");
+                     "})"));
     QTRY_COMPARE(historySpy.count(), 1);
     HistoryEntry entry = qvariant_cast<HistoryEntry>(historySpy.at(0).at(0));
     QCOMPARE(entry.title, QSL("Example Domain"));
 
-    auto object = m_testHelper.evaluateQObject("Falkon.History");
+    auto object = m_testHelper.evaluateQObject(QSL("Falkon.History"));
     QSignalSpy qmlHistorySpy(object, SIGNAL(visited(QmlHistoryItem*)));
-    mApp->history()->addHistoryEntry(QUrl("https://sample.com"), "Sample Domain");
+    mApp->history()->addHistoryEntry(QUrl(QSL("https://sample.com")), QSL("Sample Domain"));
     QTRY_COMPARE(qmlHistorySpy.count(), 1);
     mApp->history()->clearHistory();
 }
@@ -54,34 +54,34 @@ void QmlHistoryApiTest::testAddition()
 void QmlHistoryApiTest::testSearch()
 {
     QSignalSpy historySpy(mApp->history(), &History::historyEntryAdded);
-    mApp->history()->addHistoryEntry(QUrl("https://example.com"), "Example Domain");
+    mApp->history()->addHistoryEntry(QUrl(QSL("https://example.com")), QSL("Example Domain"));
-    mApp->history()->addHistoryEntry(QUrl("https://another-example.com"), "Another Example Domain");
+    mApp->history()->addHistoryEntry(QUrl(QSL("https://another-example.com")), QSL("Another Example Domain"));
-    mApp->history()->addHistoryEntry(QUrl("https://sample.com"), "Sample Domain");
+    mApp->history()->addHistoryEntry(QUrl(QSL("https://sample.com")), QSL("Sample Domain"));
     QTRY_COMPARE(historySpy.count(), 3);
-    auto list = m_testHelper.evaluate("Falkon.History.search('example')").toVariant().toList();
+    auto list = m_testHelper.evaluate(QSL("Falkon.History.search('example')")).toVariant().toList();
     QCOMPARE(list.length(), 2);
 }
 
 void QmlHistoryApiTest::testVisits()
 {
-    int visits = m_testHelper.evaluate("Falkon.History.getVisits('https://sample.com')").toInt();
+    int visits = m_testHelper.evaluate(QSL("Falkon.History.getVisits('https://sample.com')")).toInt();
     QCOMPARE(visits, 1);
     QSignalSpy historySpy(mApp->history(), &History::historyEntryEdited);
-    mApp->history()->addHistoryEntry(QUrl("https://sample.com"), "Sample Domain");
+    mApp->history()->addHistoryEntry(QUrl(QSL("https://sample.com")), QSL("Sample Domain"));
     QTRY_COMPARE(historySpy.count(), 1);
-    visits = m_testHelper.evaluate("Falkon.History.getVisits('https://sample.com')").toInt();
+    visits = m_testHelper.evaluate(QSL("Falkon.History.getVisits('https://sample.com')")).toInt();
     QCOMPARE(visits, 2);
 }
 
 void QmlHistoryApiTest::testRemoval()
 {
     QSignalSpy historySpy(mApp->history(), &History::historyEntryDeleted);
-    m_testHelper.evaluate("Falkon.History.deleteUrl('https://sample.com')");
+    m_testHelper.evaluate(QSL("Falkon.History.deleteUrl('https://sample.com')"));
     QTRY_COMPARE(historySpy.count(), 1);
 
-    auto object = m_testHelper.evaluateQObject("Falkon.History");
+    auto object = m_testHelper.evaluateQObject(QSL("Falkon.History"));
     QSignalSpy qmlHistorySpy(object, SIGNAL(visitRemoved(QmlHistoryItem*)));
-    mApp->history()->deleteHistoryEntry("https://example.com", "Example Domain");
+    mApp->history()->deleteHistoryEntry(QSL("https://example.com"), QSL("Example Domain"));
     QTRY_COMPARE(qmlHistorySpy.count(), 1);
 }
 

autotests/qml/qmltabsapitest.cpp

@@ -37,12 +37,12 @@ void QmlTabsApiTest::testInitWindowCount()
 void QmlTabsApiTest::testTabsAPI()
 {
     // Tab Insertion
-    QObject *qmlTabsObject = m_testHelper.evaluateQObject("Falkon.Tabs");
+    QObject *qmlTabsObject = m_testHelper.evaluateQObject(QSL("Falkon.Tabs"));
     QVERIFY(qmlTabsObject);
     QSignalSpy qmlTabsInsertedSpy(qmlTabsObject, SIGNAL(tabInserted(QVariantMap)));
-    m_testHelper.evaluate("Falkon.Tabs.addTab({"
+    m_testHelper.evaluate(QL1S("Falkon.Tabs.addTab({"
                      "    url: 'https://example.com/'"
-                     "})");
+                     "})"));
     QCOMPARE(qmlTabsInsertedSpy.count(), 1);
     QVariantMap retMap1 = QVariant(qmlTabsInsertedSpy.at(0).at(0)).toMap();
     int index1 = retMap1.value(QSL("index"), -1).toInt();
@@ -50,15 +50,15 @@ void QmlTabsApiTest::testTabsAPI()
     QCOMPARE(index1, 0);
     QCOMPARE(windowId1, 0);
 
-    QObject *qmlTabObject1 = m_testHelper.evaluateQObject("Falkon.Tabs.get({index: 0})");
+    QObject *qmlTabObject1 = m_testHelper.evaluateQObject(QSL("Falkon.Tabs.get({index: 0})"));
     QVERIFY(qmlTabObject1);
     QCOMPARE(qmlTabObject1->property("index").toInt(), 0);
     QCOMPARE(qmlTabObject1->property("pinned").toBool(), false);
     QTRY_COMPARE(qmlTabObject1->property("url").toString(), QSL("https://example.com/"));
 
-    m_testHelper.evaluate("Falkon.Tabs.addTab({"
+    m_testHelper.evaluate(QL1S("Falkon.Tabs.addTab({"
                      "    url: 'https://another-example.com/',"
-                     "})");
+                     "})"));
     QCOMPARE(qmlTabsInsertedSpy.count(), 2);
     QVariantMap retMap2 = QVariant(qmlTabsInsertedSpy.at(1).at(0)).toMap();
     int index2 = retMap2.value(QSL("index"), -1).toInt();
@@ -66,17 +66,17 @@ void QmlTabsApiTest::testTabsAPI()
     QCOMPARE(index2, 1);
     QCOMPARE(windowId2, 0);
 
-    bool pinnedTab = m_testHelper.evaluate("Falkon.Tabs.pinTab({index: 1})").toBool();
+    bool pinnedTab = m_testHelper.evaluate(QSL("Falkon.Tabs.pinTab({index: 1})")).toBool();
     QVERIFY(pinnedTab);
-    QObject *qmlTabObject2 = m_testHelper.evaluateQObject("Falkon.Tabs.get({index: 0})");
+    QObject *qmlTabObject2 = m_testHelper.evaluateQObject(QSL("Falkon.Tabs.get({index: 0})"));
     QVERIFY(qmlTabObject2);
     QCOMPARE(qmlTabObject2->property("index").toInt(), 0);
     QCOMPARE(qmlTabObject2->property("pinned").toBool(), true);
     QTRY_COMPARE(qmlTabObject2->property("url").toString(), QSL("https://another-example.com/"));
 
-    bool unpinnedTab = m_testHelper.evaluate("Falkon.Tabs.unpinTab({index: 0})").toBool();
+    bool unpinnedTab = m_testHelper.evaluate(QSL("Falkon.Tabs.unpinTab({index: 0})")).toBool();
     QVERIFY(unpinnedTab);
-    QObject *qmlTabObject3 = m_testHelper.evaluateQObject("Falkon.Tabs.get({index: 0})");
+    QObject *qmlTabObject3 = m_testHelper.evaluateQObject(QSL("Falkon.Tabs.get({index: 0})"));
     QVERIFY(qmlTabObject3);
     QCOMPARE(qmlTabObject3->property("url").toString(), QSL("https://another-example.com/"));
     QCOMPARE(qmlTabObject3->property("index").toInt(), 0);
@@ -84,28 +84,28 @@ void QmlTabsApiTest::testTabsAPI()
 
     // Next-Previous-Current
     QCOMPARE(mApp->getWindow()->tabWidget()->currentIndex(), 0);
-    m_testHelper.evaluate("Falkon.Tabs.nextTab()");
+    m_testHelper.evaluate(QSL("Falkon.Tabs.nextTab()"));
     QCOMPARE(mApp->getWindow()->tabWidget()->currentIndex(), 1);
-    m_testHelper.evaluate("Falkon.Tabs.nextTab()");
+    m_testHelper.evaluate(QSL("Falkon.Tabs.nextTab()"));
     QCOMPARE(mApp->getWindow()->tabWidget()->currentIndex(), 0);
-    m_testHelper.evaluate("Falkon.Tabs.previousTab()");
+    m_testHelper.evaluate(QSL("Falkon.Tabs.previousTab()"));
     QCOMPARE(mApp->getWindow()->tabWidget()->currentIndex(), 1);
-    m_testHelper.evaluate("Falkon.Tabs.previousTab()");
+    m_testHelper.evaluate(QSL("Falkon.Tabs.previousTab()"));
     QCOMPARE(mApp->getWindow()->tabWidget()->currentIndex(), 0);
-    m_testHelper.evaluate("Falkon.Tabs.setCurrentIndex({index: 1})");
+    m_testHelper.evaluate(QSL("Falkon.Tabs.setCurrentIndex({index: 1})"));
     QCOMPARE(mApp->getWindow()->tabWidget()->currentIndex(), 1);
-    m_testHelper.evaluate("Falkon.Tabs.setCurrentIndex({index: 0})");
+    m_testHelper.evaluate(QSL("Falkon.Tabs.setCurrentIndex({index: 0})"));
     QCOMPARE(mApp->getWindow()->tabWidget()->currentIndex(), 0);
 
     // Move Tab
     QSignalSpy qmlTabsMovedSpy(qmlTabsObject, SIGNAL(tabMoved(QVariantMap)));
-    m_testHelper.evaluate("Falkon.Tabs.moveTab({from: 0, to:1, windowId: 0})");
+    m_testHelper.evaluate(QSL("Falkon.Tabs.moveTab({from: 0, to:1, windowId: 0})"));
     QCOMPARE(qmlTabsMovedSpy.count(), 1);
 
     // Tab Removal
     QCOMPARE(mApp->getWindow()->tabCount(), 2);
     QSignalSpy qmlTabsRemovedSpy(qmlTabsObject, SIGNAL(tabRemoved(QVariantMap)));
-    m_testHelper.evaluate("Falkon.Tabs.closeTab({index: 0})");
+    m_testHelper.evaluate(QSL("Falkon.Tabs.closeTab({index: 0})"));
     QCOMPARE(qmlTabsRemovedSpy.count(), 1);
     QCOMPARE(mApp->getWindow()->tabCount(), 1);
 }

autotests/qml/qmltopsitesapitest.cpp

@@ -31,8 +31,8 @@ void QmlTopSitesApiTest::cleanupTestCase()
 
 void QmlTopSitesApiTest::testTopSites()
 {
-    mApp->plugins()->speedDial()->addPage(QUrl("https://example.com"), "Example Domain");
+    mApp->plugins()->speedDial()->addPage(QUrl(QSL("https://example.com")), QSL("Example Domain"));
-    auto list = m_testHelper.evaluate("Falkon.TopSites.get()").toVariant().toList();
+    auto list = m_testHelper.evaluate(QSL("Falkon.TopSites.get()")).toVariant().toList();
     qDebug() << "Top sites list size=" << list.length();
     for( const auto& site : list )
     {

autotests/qml/qmluserscriptapitest.cpp

@@ -34,26 +34,26 @@ void QmlUserScriptApiTest::cleanupTestCase()
 
 void QmlUserScriptApiTest::testCount()
 {
-    int count = m_testHelper.evaluate("Falkon.UserScripts.count").toInt();
+    int count = m_testHelper.evaluate(QSL("Falkon.UserScripts.count")).toInt();
     QCOMPARE(count, mApp->webProfile()->scripts()->count());
 }
 
 void QmlUserScriptApiTest::testSize()
 {
-    int size = m_testHelper.evaluate("Falkon.UserScripts.size").toInt();
+    int size = m_testHelper.evaluate(QSL("Falkon.UserScripts.size")).toInt();
     QCOMPARE(size, mApp->webProfile()->scripts()->count());
 }
 
 void QmlUserScriptApiTest::testEmpty()
 {
-    bool empty = m_testHelper.evaluate("Falkon.UserScripts.empty").toBool();
+    bool empty = m_testHelper.evaluate(QSL("Falkon.UserScripts.empty")).toBool();
     QCOMPARE(empty, mApp->webProfile()->scripts()->isEmpty());
 }
 
 void QmlUserScriptApiTest::testContains()
 {
     QWebEngineScript script = mApp->webProfile()->scripts()->toList().at(0);
-    QObject *object = m_testHelper.evaluateQObject("Falkon.UserScripts");
+    QObject *object = m_testHelper.evaluateQObject(QSL("Falkon.UserScripts"));
     auto *userScripts = dynamic_cast<QmlUserScripts*>(object);
     QVERIFY(userScripts);
     auto *userScript = new QmlUserScript();
@@ -65,7 +65,7 @@ void QmlUserScriptApiTest::testContains()
 void QmlUserScriptApiTest::testFind()
 {
     QWebEngineScript script = mApp->webProfile()->scripts()->toList().at(0);
-    QObject *object = m_testHelper.evaluateQObject("Falkon.UserScripts");
+    QObject *object = m_testHelper.evaluateQObject(QSL("Falkon.UserScripts"));
     auto *userScripts = dynamic_cast<QmlUserScripts*>(object);
     QVERIFY(userScripts);
     QObject *scriptFound = userScripts->findScript(script.name());
@@ -75,22 +75,22 @@ void QmlUserScriptApiTest::testFind()
 
 void QmlUserScriptApiTest::testInsertRemove()
 {
-    int initialCount = m_testHelper.evaluate("Falkon.UserScripts.count").toInt();
+    int initialCount = m_testHelper.evaluate(QSL("Falkon.UserScripts.count")).toInt();
-    QObject *object = m_testHelper.evaluateQObject("Falkon.UserScripts");
+    QObject *object = m_testHelper.evaluateQObject(QSL("Falkon.UserScripts"));
     auto *userScripts = dynamic_cast<QmlUserScripts*>(object);
     QVERIFY(userScripts);
     auto *userScript = new QmlUserScript();
-    userScript->setProperty("name", "Hello World");
+    userScript->setProperty("name", QSL("Hello World"));
-    userScript->setProperty("sourceCode", "(function() {"
+    userScript->setProperty("sourceCode", QL1S("(function() {"
                               "    alert('Hello World')"
-                              "})()");
+                              "})()"));
     userScripts->insert(userScript);
-    int finalCount = m_testHelper.evaluate("Falkon.UserScripts.count").toInt();
+    int finalCount = m_testHelper.evaluate(QSL("Falkon.UserScripts.count")).toInt();
     QCOMPARE(finalCount, initialCount + 1);
 
     userScripts->remove(userScript);
 
-    int ultimateCount = m_testHelper.evaluate("Falkon.UserScripts.count").toInt();
+    int ultimateCount = m_testHelper.evaluate(QSL("Falkon.UserScripts.count")).toInt();
     QCOMPARE(ultimateCount, initialCount);
 }
 

autotests/qml/qmlwindowsapitest.cpp

@@ -32,13 +32,13 @@ void QmlWindowsApiTest::cleanupTestCase()
 
 void QmlWindowsApiTest::testWindowsAPI()
 {
-    QObject *currentWindowObject = m_testHelper.evaluateQObject("Falkon.Windows.getCurrent()");
+    QObject *currentWindowObject = m_testHelper.evaluateQObject(QSL("Falkon.Windows.getCurrent()"));
     QVERIFY(currentWindowObject);
     QCOMPARE(currentWindowObject->property("title").toString(), mApp->getWindow()->windowTitle());
     QCOMPARE(currentWindowObject->property("type").toInt(), (int)mApp->getWindow()->windowType());
     QCOMPARE(currentWindowObject->property("tabs").toList().length(), mApp->getWindow()->tabCount());
 
-    QObject *windowObject = m_testHelper.evaluateQObject("Falkon.Windows");
+    QObject *windowObject = m_testHelper.evaluateQObject(QSL("Falkon.Windows"));
     QVERIFY(windowObject);
     QSignalSpy qmlWindowCreatedSignal(windowObject, SIGNAL(created(QmlWindow*)));
     qRegisterMetaType<BrowserWindow*>();
@@ -48,7 +48,7 @@ void QmlWindowsApiTest::testWindowsAPI()
     QTRY_COMPARE(qmlWindowCreatedSignal.count(), 1);
     QTRY_COMPARE(windowCreatedSingal.count(), 1);
 
-    QObject *newQmlWindow = m_testHelper.evaluateQObject("Falkon.Windows.create({})");
+    QObject *newQmlWindow = m_testHelper.evaluateQObject(QSL("Falkon.Windows.create({})"));
     QVERIFY(newQmlWindow);
     QCOMPARE(mApp->windowCount(), 2);
 
@@ -60,12 +60,12 @@ void QmlWindowsApiTest::testWindowsAPI()
     QVERIFY(newQmlSignalWindow);
     QCOMPARE(newQmlWindow->property("id").toInt(), newQmlSignalWindow->property("id").toInt());
 
-    int qmlWindowCount = m_testHelper.evaluate("Falkon.Windows.getAll().length").toInt();
+    int qmlWindowCount = m_testHelper.evaluate(QSL("Falkon.Windows.getAll().length")).toInt();
     QCOMPARE(qmlWindowCount, mApp->windowCount());
 
     QSignalSpy qmlWindowRemovedSignal(windowObject, SIGNAL(removed(QmlWindow*)));
     int newQmlWindowId = newQmlSignalWindow->property("id").toInt();
-    m_testHelper.evaluate(QString("Falkon.Windows.remove(%1)").arg(newQmlWindowId));
+    m_testHelper.evaluate(QString(QSL("Falkon.Windows.remove(%1)")).arg(newQmlWindowId));
     QTRY_COMPARE(qmlWindowRemovedSignal.count(), 1);
 }
 

autotests/qztoolstest.cpp

@@ -65,15 +65,15 @@ void QzToolsTest::getFileNameFromUrl_data()
     QTest::addColumn<QUrl>("url");
     QTest::addColumn<QString>("result");
 
-    QTest::newRow("Basic") << QUrl("http://www.google.com/filename.html") << "filename.html";
+    QTest::newRow("Basic") << QUrl(QSL("http://www.google.com/filename.html")) << QSL("filename.html");
-    QTest::newRow("OnlyHost") << QUrl("http://www.google.com/") << "www.google.com";
+    QTest::newRow("OnlyHost") << QUrl(QSL("http://www.google.com/")) << QSL("www.google.com");
-    QTest::newRow("OnlyHostWithoutSlash") << QUrl("http://www.google.com") << "www.google.com";
+    QTest::newRow("OnlyHostWithoutSlash") << QUrl(QSL("http://www.google.com")) << QSL("www.google.com");
-    QTest::newRow("EndingDirectory") << QUrl("http://www.google.com/filename/") << "filename";
+    QTest::newRow("EndingDirectory") << QUrl(QSL("http://www.google.com/filename/")) << QSL("filename");
-    QTest::newRow("EmptyUrl") << QUrl("") << "";
+    QTest::newRow("EmptyUrl") << QUrl(QSL("")) << QSL("");
-    QTest::newRow("OnlyScheme") << QUrl("http:") << "";
+    QTest::newRow("OnlyScheme") << QUrl(QSL("http:")) << QSL("");
-    QTest::newRow("FileSchemeUrl") << QUrl("file:///usr/share/test/file.tx") << "file.tx";
+    QTest::newRow("FileSchemeUrl") << QUrl(QSL("file:///usr/share/test/file.tx")) << QSL("file.tx");
-    QTest::newRow("FileSchemeUrlDirectory") << QUrl("file:///usr/share/test/") << "test";
+    QTest::newRow("FileSchemeUrlDirectory") << QUrl(QSL("file:///usr/share/test/")) << QSL("test");
-    QTest::newRow("FileSchemeUrlRoot") << QUrl("file:///") << "";
+    QTest::newRow("FileSchemeUrlRoot") << QUrl(QSL("file:///")) << QSL("");
 }
 
 void QzToolsTest::getFileNameFromUrl()
@@ -90,37 +90,37 @@ void QzToolsTest::splitCommandArguments_data()
     QTest::addColumn<QStringList>("result");
 
     QTest::newRow("Basic") << "/usr/bin/foo -o foo.out"
-                           << (QStringList() << "/usr/bin/foo" << "-o" << "foo.out");
+                           << (QStringList() << QSL("/usr/bin/foo") << QSL("-o") << QSL("foo.out"));
     QTest::newRow("Empty") << QString()
                            << QStringList();
-    QTest::newRow("OnlySpaces") << QString("                   ")
+    QTest::newRow("OnlySpaces") << QSL("                   ")
                            << QStringList();
-    QTest::newRow("OnlyQuotes") << QString(R"("" "")")
+    QTest::newRow("OnlyQuotes") << QSL(R"("" "")")
                            << QStringList();
-    QTest::newRow("EmptyQuotesAndSpace") << QString(R"("" "" " ")")
+    QTest::newRow("EmptyQuotesAndSpace") << QSL(R"("" "" " ")")
-                           << QStringList(" ");
+                           << QStringList(QSL(" "));
     QTest::newRow("MultipleSpaces") << "    /usr/foo   -o    foo.out    "
-                           << (QStringList() << "/usr/foo" << "-o" << "foo.out");
+                           << (QStringList() << QSL("/usr/foo") << QSL("-o") << QSL("foo.out"));
     QTest::newRow("Quotes") << R"("/usr/foo" "-o" "foo.out")"
-                           << (QStringList() << "/usr/foo" << "-o" << "foo.out");
+                           << (QStringList() << QSL("/usr/foo") << QSL("-o") << QSL("foo.out"));
     QTest::newRow("SingleQuotes") << "'/usr/foo' '-o' 'foo.out'"
-                           << (QStringList() << "/usr/foo" << "-o" << "foo.out");
+                           << (QStringList() << QSL("/usr/foo") << QSL("-o") << QSL("foo.out"));
     QTest::newRow("SingleAndDoubleQuotes") << " '/usr/foo' \"-o\" 'foo.out' "
-                           << (QStringList() << "/usr/foo" << "-o" << "foo.out");
+                           << (QStringList() << QSL("/usr/foo") << QSL("-o") << QSL("foo.out"));
     QTest::newRow("SingleInDoubleQuotes") << "/usr/foo \"-o 'ds' \" 'foo.out' "
-                           << (QStringList() << "/usr/foo" << "-o 'ds' " << "foo.out");
+                           << (QStringList() << QSL("/usr/foo") << QSL("-o 'ds' ") << QSL("foo.out"));
     QTest::newRow("DoubleInSingleQuotes") << "/usr/foo -o 'foo\" d \".out' "
-                           << (QStringList() << "/usr/foo" << "-o" << "foo\" d \".out");
+                           << (QStringList() << QSL("/usr/foo") << QSL("-o") << QSL("foo\" d \".out"));
-    QTest::newRow("SpacesWithQuotes") << QString(R"(  "   "     "   "     )")
+    QTest::newRow("SpacesWithQuotes") << QSL(R"(  "   "     "   "     )")
-                           << (QStringList() << "   " << "   ");
+                           << (QStringList() << QSL("   ") << QSL("   "));
     QTest::newRow("QuotesAndSpaces") << "/usr/foo -o \"foo - out\""
-                           << (QStringList() << "/usr/foo" << "-o" << "foo - out");
+                           << (QStringList() << QSL("/usr/foo") << QSL("-o") << QSL("foo - out"));
     QTest::newRow("EqualAndQuotes") << "/usr/foo -o=\"foo - out\""
-                           << (QStringList() << "/usr/foo" << "-o=foo - out");
+                           << (QStringList() << QSL("/usr/foo") << QSL("-o=foo - out"));
     QTest::newRow("EqualWithSpaces") << "/usr/foo -o = \"foo - out\""
-                           << (QStringList() << "/usr/foo" << "-o" << "=" << "foo - out");
+                           << (QStringList() << QSL("/usr/foo") << QSL("-o") << QSL("=") << QSL("foo - out"));
     QTest::newRow("MultipleSpacesAndQuotes") << "    /usr/foo   -o=\"    foo.out   \" "
-                           << (QStringList() << "/usr/foo" << "-o=    foo.out   ");
+                           << (QStringList() << QSL("/usr/foo") << QSL("-o=    foo.out   "));
     // Unmatched quotes should be treated as an error
     QTest::newRow("UnmatchedQuote") << "/usr/bin/foo -o \"bar"
                            << QStringList();
@@ -275,17 +275,17 @@ static void createTestDirectoryStructure(const QString &path)
 {
     QDir().mkdir(path);
     QDir dir(path);
-    dir.mkdir("dir1");
+    dir.mkdir(QSL("dir1"));
-    dir.mkdir("dir2");
+    dir.mkdir(QSL("dir2"));
-    dir.mkdir("dir3");
+    dir.mkdir(QSL("dir3"));
-    dir.cd("dir1");
+    dir.cd(QSL("dir1"));
-    dir.mkdir("dir1_1");
+    dir.mkdir(QSL("dir1_1"));
-    dir.mkdir("dir1_2");
+    dir.mkdir(QSL("dir1_2"));
-    dir.mkdir("dir1_3");
+    dir.mkdir(QSL("dir1_3"));
     dir.cdUp();
-    dir.cd("dir3");
+    dir.cd(QSL("dir3"));
-    dir.mkdir("dir3_1");
+    dir.mkdir(QSL("dir3_1"));
-    QFile file(path + "/dir1/dir1_2/file1.txt");
+    QFile file(path + QSL("/dir1/dir1_2/file1.txt"));
     file.open(QFile::WriteOnly);
     file.write("test");
     file.close();
@@ -296,32 +296,32 @@ void QzToolsTest::copyRecursivelyTest()
     const QString testDir = createPath("copyRecursivelyTest");
     createTestDirectoryStructure(testDir);
 
-    QVERIFY(!QFileInfo(testDir + "-copy").exists());
+    QVERIFY(!QFileInfo(testDir + QSL("-copy")).exists());
 
     // Copy to non-existent target
-    QCOMPARE(QzTools::copyRecursively(testDir, testDir + "-copy"), true);
+    QCOMPARE(QzTools::copyRecursively(testDir, testDir + QSL("-copy")), true);
 
-    QCOMPARE(QFileInfo(testDir + "-copy").isDir(), true);
+    QCOMPARE(QFileInfo(testDir + QSL("-copy")).isDir(), true);
-    QCOMPARE(QFileInfo(testDir + "-copy/dir1").isDir(), true);
+    QCOMPARE(QFileInfo(testDir + QSL("-copy/dir1")).isDir(), true);
-    QCOMPARE(QFileInfo(testDir + "-copy/dir2").isDir(), true);
+    QCOMPARE(QFileInfo(testDir + QSL("-copy/dir2")).isDir(), true);
-    QCOMPARE(QFileInfo(testDir + "-copy/dir3").isDir(), true);
+    QCOMPARE(QFileInfo(testDir + QSL("-copy/dir3")).isDir(), true);
-    QCOMPARE(QFileInfo(testDir + "-copy/dir1/dir1_1").isDir(), true);
+    QCOMPARE(QFileInfo(testDir + QSL("-copy/dir1/dir1_1")).isDir(), true);
-    QCOMPARE(QFileInfo(testDir + "-copy/dir1/dir1_2").isDir(), true);
+    QCOMPARE(QFileInfo(testDir + QSL("-copy/dir1/dir1_2")).isDir(), true);
-    QCOMPARE(QFileInfo(testDir + "-copy/dir1/dir1_3").isDir(), true);
+    QCOMPARE(QFileInfo(testDir + QSL("-copy/dir1/dir1_3")).isDir(), true);
-    QCOMPARE(QFileInfo(testDir + "-copy/dir3/dir3_1").isDir(), true);
+    QCOMPARE(QFileInfo(testDir + QSL("-copy/dir3/dir3_1")).isDir(), true);
-    QCOMPARE(QFileInfo(testDir + "-copy/dir1/dir1_2/file1.txt").isFile(), true);
+    QCOMPARE(QFileInfo(testDir + QSL("-copy/dir1/dir1_2/file1.txt")).isFile(), true);
 
-    QFile file(testDir + "-copy/dir1/dir1_2/file1.txt");
+    QFile file(testDir + QSL("-copy/dir1/dir1_2/file1.txt"));
     file.open(QFile::ReadOnly);
     QCOMPARE(file.readAll(), QByteArray("test"));
     file.close();
 
     // Copy to target that already exists
-    QCOMPARE(QzTools::copyRecursively(testDir, testDir + "-copy"), false);
+    QCOMPARE(QzTools::copyRecursively(testDir, testDir + QSL("-copy")), false);
 
     // Cleanup
     QCOMPARE(QzTools::removeRecursively(testDir), true);
-    QCOMPARE(QzTools::removeRecursively(testDir + "-copy"), true);
+    QCOMPARE(QzTools::removeRecursively(testDir + QSL("-copy")), true);
 }
 
 void QzToolsTest::removeRecursivelyTest()
@@ -329,23 +329,23 @@ void QzToolsTest::removeRecursivelyTest()
     const QString testDir = createPath("removeRecursivelyTest");
     createTestDirectoryStructure(testDir);
 
-    QCOMPARE(QzTools::copyRecursively(testDir, testDir + "-copy"), true);
+    QCOMPARE(QzTools::copyRecursively(testDir, testDir + QSL("-copy")), true);
-    QCOMPARE(QzTools::removeRecursively(testDir + "-copy"), true);
+    QCOMPARE(QzTools::removeRecursively(testDir + QSL("-copy")), true);
-    QCOMPARE(QFileInfo(testDir + "-copy").exists(), false);
+    QCOMPARE(QFileInfo(testDir + QSL("-copy")).exists(), false);
 
     // Remove non-existent path returns success
-    QCOMPARE(QzTools::removeRecursively(testDir + "-copy"), true);
+    QCOMPARE(QzTools::removeRecursively(testDir + QSL("-copy")), true);
 
-    QCOMPARE(QzTools::copyRecursively(testDir, testDir + "-copy2"), true);
+    QCOMPARE(QzTools::copyRecursively(testDir, testDir + QSL("-copy2")), true);
 
-    QFile dir(testDir + "-copy2");
+    QFile dir(testDir + QSL("-copy2"));
     dir.setPermissions(dir.permissions() & ~(QFile::WriteOwner | QFile::WriteUser | QFile::WriteGroup | QFile::WriteOther));
 
-    QCOMPARE(QzTools::removeRecursively(testDir + "-copy2"), false);
+    QCOMPARE(QzTools::removeRecursively(testDir + QSL("-copy2")), false);
 
     dir.setPermissions(dir.permissions() | QFile::WriteOwner);
 
-    QCOMPARE(QzTools::removeRecursively(testDir + "-copy2"), true);
+    QCOMPARE(QzTools::removeRecursively(testDir + QSL("-copy2")), true);
 
     // Cleanup
     QCOMPARE(QzTools::removeRecursively(testDir), true);
@@ -356,21 +356,21 @@ void QzToolsTest::dontFollowSymlinksTest()
     const QString testDir = createPath("removeRecursivelyTest");
     createTestDirectoryStructure(testDir);
 
-    QDir().mkpath(testDir + "/subdir");
+    QDir().mkpath(testDir + QSL("/subdir"));
-    QFile::link(testDir, testDir + "/subdir/link");
+    QFile::link(testDir, testDir + QSL("/subdir/link"));
 
-    QVERIFY(QzTools::removeRecursively(testDir + "/subdir"));
+    QVERIFY(QzTools::removeRecursively(testDir + QSL("/subdir")));
 
-    QVERIFY(!QFile::exists(testDir + "/subdir"));
+    QVERIFY(!QFile::exists(testDir + QSL("/subdir")));
     QVERIFY(QFile::exists(testDir));
 
-    QDir().mkpath(testDir + "/subdir/normalfolder");
+    QDir().mkpath(testDir + QSL("/subdir/normalfolder"));
-    QFile::link("..", testDir + "/subdir/link");
+    QFile::link(QSL(".."), testDir + QSL("/subdir/link"));
 
-    QVERIFY(QzTools::copyRecursively(testDir + "/subdir", testDir + "/subdir2"));
+    QVERIFY(QzTools::copyRecursively(testDir + QSL("/subdir"), testDir + QSL("/subdir2")));
 
-    QCOMPARE(QFile::exists(testDir + "/subdir2/link"), true);
+    QCOMPARE(QFile::exists(testDir + QSL("/subdir2/link")), true);
-    QCOMPARE(QFile::exists(testDir + "/subdir2/normalfolder"), true);
+    QCOMPARE(QFile::exists(testDir + QSL("/subdir2/normalfolder")), true);
 
     // Cleanup
     QCOMPARE(QzTools::removeRecursively(testDir), true);
@@ -378,7 +378,7 @@ void QzToolsTest::dontFollowSymlinksTest()
 
 QString QzToolsTest::createPath(const char *file) const
 {
-    return m_tmpPath + QL1S("/") + file;
+    return m_tmpPath + QL1S("/") + QString::fromUtf8(file);
 }
 
 QTEST_GUILESS_MAIN(QzToolsTest)

autotests/tabmodeltest.cpp

@@ -58,7 +58,7 @@ void TabModelTest::basicTest()
 
     rowsInsertedSpy.clear();
 
-    w->tabWidget()->addView(QUrl("http://test.com"));
+    w->tabWidget()->addView(QUrl(QSL("http://test.com")));
 
     QCOMPARE(rowsInsertedSpy.count(), 1);
     WebTab *tab1 = w->tabWidget()->webTab(1);
@@ -114,7 +114,7 @@ void TabModelTest::dataTest()
     QCOMPARE(model.index(0, 0).data(TabModel::RestoredRole).toBool(), tab0->isRestored());
     QCOMPARE(model.index(0, 0).data(TabModel::CurrentTabRole).toBool(), true);
 
-    w->tabWidget()->addView(QUrl("http://test.com"));
+    w->tabWidget()->addView(QUrl(QSL("http://test.com")));
 
     delete w;
 }
@@ -125,7 +125,7 @@ void TabModelTest::pinTabTest()
     TabModel model(w);
     ModelTest modelTest(&model);
 
-    w->tabWidget()->addView(QUrl("http://test.com"));
+    w->tabWidget()->addView(QUrl(QSL("http://test.com")));
 
     QTRY_COMPARE(model.rowCount(), 2);
 

autotests/webtabtest.cpp

@@ -257,27 +257,27 @@ void WebTabTest::loadNotRestoredTabTest()
 {
     WebTab tab;
 
-    tab.load(QUrl("qrc:autotests/data/basic_page.html"));
+    tab.load(QUrl(QSL("qrc:autotests/data/basic_page.html")));
     QVERIFY(waitForLoadfinished(&tab));
     QTRY_COMPARE(tab.webView()->history()->count(), 1);
 
     tab.unload();
     QVERIFY(!tab.isRestored());
 
-    tab.load(QUrl("qrc:autotests/data/basic_page2.html"));
+    tab.load(QUrl(QSL("qrc:autotests/data/basic_page2.html")));
     QVERIFY(waitForLoadfinished(&tab));
     QTRY_COMPARE(tab.webView()->history()->count(), 2);
 
-    QCOMPARE(tab.url(), QUrl("qrc:autotests/data/basic_page2.html"));
+    QCOMPARE(tab.url(), QUrl(QSL("qrc:autotests/data/basic_page2.html")));
-    QCOMPARE(tab.webView()->history()->currentItem().url(), QUrl("qrc:autotests/data/basic_page2.html"));
+    QCOMPARE(tab.webView()->history()->currentItem().url(), QUrl(QSL("qrc:autotests/data/basic_page2.html")));
-    QCOMPARE(tab.webView()->history()->backItem().url(), QUrl("qrc:autotests/data/basic_page.html"));
+    QCOMPARE(tab.webView()->history()->backItem().url(), QUrl(QSL("qrc:autotests/data/basic_page.html")));
 }
 
 void WebTabTest::saveNotRestoredTabTest()
 {
     WebTab tab;
 
-    tab.load(QUrl("qrc:autotests/data/basic_page.html"));
+    tab.load(QUrl(QSL("qrc:autotests/data/basic_page.html")));
     QVERIFY(waitForLoadfinished(&tab));
     QTRY_COMPARE(tab.webView()->history()->count(), 1);
 
@@ -286,7 +286,7 @@ void WebTabTest::saveNotRestoredTabTest()
 
     WebTab::SavedTab saved(&tab);
     QVERIFY(saved.isValid());
-    QCOMPARE(saved.url, QUrl("qrc:autotests/data/basic_page.html"));
+    QCOMPARE(saved.url, QUrl(QSL("qrc:autotests/data/basic_page.html")));
 }
 
 FALKONTEST_MAIN(WebTabTest)

autotests/webviewtest.cpp

@@ -73,7 +73,7 @@ void WebViewTest::loadSignalsChangePageTest()
     QSignalSpy loadStartedSpy(&view, &WebView::loadStarted);
     QSignalSpy loadFinishedSpy(&view, &WebView::loadFinished);
 
-    view.load(QUrl("qrc:autotests/data/basic_page.html"));
+    view.load(QUrl(QSL("qrc:autotests/data/basic_page.html")));
 
     QTRY_COMPARE(loadStartedSpy.count(), 1);
     loadStartedSpy.clear();
@@ -93,7 +93,7 @@ void WebViewTest::loadSignalsChangePageTest()
     view2.setPage(page3);
 
     QSignalSpy page3LoadStart(page3, &WebPage::loadStarted);
-    page3->load(QUrl("qrc:autotests/data/basic_page.html"));
+    page3->load(QUrl(QSL("qrc:autotests/data/basic_page.html")));
     QVERIFY(page3LoadStart.wait());
 
     view2.setPage(new QWebEnginePage(&view2));

src/lib/3rdparty/fancytabwidget.cpp

@@ -619,7 +619,7 @@ void FancyTabWidget::SetMode(FancyTabWidget::Mode mode)
         side_layout_->insertWidget(0, bar);
         tab_bar_ = bar;
 
-        foreach (const Item &item, items_) {
+        for (const Item &item : std::as_const(items_)) {
             if (item.type_ == Item::Type_Spacer) {
                 bar->addSpacer(item.spacer_size_);
             }
@@ -718,7 +718,7 @@ void FancyTabWidget::MakeTabBar(QTabBar::Shape shape, bool text, bool icons,
         side_layout_->insertWidget(0, bar);
     }
 
-    foreach (const Item &item, items_) {
+    for (const Item &item : std::as_const(items_)) {
         if (item.type_ != Item::Type_Tab) {
             continue;
         }

src/lib/3rdparty/lineedit.cpp

@@ -302,7 +302,7 @@ void LineEdit::setTextFormat(const LineEdit::TextFormat &format)
 {
     QList<QInputMethodEvent::Attribute> attributes;
 
-    foreach (const QTextLayout::FormatRange &fr, format) {
+    for (const QTextLayout::FormatRange &fr : format) {
         QInputMethodEvent::AttributeType type = QInputMethodEvent::TextFormat;
         int start = fr.start - cursorPosition();
         int length = fr.length;

src/lib/3rdparty/qtsingleapplication/qtlocalpeer.cpp

@@ -111,7 +111,7 @@ QtLocalPeer::QtLocalPeer(QObject* parent, const QString &appId)
 #endif
         prefix = id.section(QLatin1Char('/'), -1);
     }
-    prefix = QRegExp("[^a-zA-Z]").removeIn(prefix);
+    prefix = QRegExp(QStringLiteral("[^a-zA-Z]")).removeIn(prefix);
     prefix.truncate(6);
 
     QByteArray idc = id.toUtf8();

src/lib/3rdparty/qtsingleapplication/qtlockedfile_win.cpp

@@ -190,7 +190,7 @@ bool QtLockedFile::unlock()
         rmutex = 0;
     }
     else {
-        foreach(Qt::HANDLE mutex, rmutexes) {
+        for (Qt::HANDLE mutex : std::as_const(rmutexes)) {
             ReleaseMutex(mutex);
             CloseHandle(mutex);
         }

src/lib/3rdparty/stylehelper.cpp

@@ -127,7 +127,9 @@ void StyleHelper::setBaseColor(const QColor &newcolor)
 
     if (color.isValid() && color != m_baseColor) {
         m_baseColor = color;
-        foreach (QWidget* w, QApplication::topLevelWidgets()) {
+
+        auto const l_topLevelWidgets = QApplication::topLevelWidgets();
+        for (QWidget* w : l_topLevelWidgets) {
             w->update();
         }
     }

src/lib/adblock/adblockmanager.cpp

@@ -111,7 +111,7 @@ bool AdBlockManager::block(QWebEngineUrlRequestInfo &request, QString &ruleFilte
     QElapsedTimer timer;
     timer.start();
 #endif
-    const QString urlString = request.requestUrl().toEncoded().toLower();
+    const QString urlString = QString::fromUtf8(request.requestUrl().toEncoded().toLower());
     const QString urlDomain = request.requestUrl().host().toLower();
     const QString urlScheme = request.requestUrl().scheme().toLower();
 

src/lib/adblock/adblockrule.cpp

@@ -76,7 +76,7 @@ static QString getTopLevelDomain(const QUrl &url)
 
     //return qt_ACE_do(tld, ToAceOnly, AllowLeadingDot, {});
     // TODO QT6 - QUrl::toAce() uses ForbidLeadingDot, while the old QUrl::topLevelDomain() used AllowLeadingDot. Does this matter?
-    return QString(QUrl::toAce(tld));
+    return QString(QString::fromUtf8(QUrl::toAce(tld)));
 }
 
 static QString toSecondLevelDomain(const QUrl &url)
@@ -235,7 +235,7 @@ bool AdBlockRule::urlMatch(const QUrl &url) const
         return false;
     }
 
-    const QString encodedUrl = url.toEncoded();
+    const QString encodedUrl = QString::fromUtf8(url.toEncoded());
     const QString domain = url.host();
 
     return stringMatch(domain, encodedUrl);

src/lib/app/mainapplication.cpp

@@ -121,7 +121,7 @@ MainApplication::MainApplication(int &argc, char** argv)
     setDesktopFileName(QSL("org.kde.falkon"));
 
 #ifdef GIT_REVISION
-    setApplicationVersion(QSL("%1 (%2)").arg(Qz::VERSION, GIT_REVISION));
+    setApplicationVersion(QSL("%1 (%2)").arg(QString::fromLatin1(Qz::VERSION), GIT_REVISION));
 #else
     setApplicationVersion(QString::fromLatin1(Qz::VERSION));
 #endif
@@ -196,15 +196,15 @@ MainApplication::MainApplication(int &argc, char** argv)
                 break;
             case Qz::CL_OpenUrlInCurrentTab:
                 startUrl = QUrl::fromUserInput(pair.text);
-                messages.append("ACTION:OpenUrlInCurrentTab" + pair.text);
+                messages.append(QSL("ACTION:OpenUrlInCurrentTab") + pair.text);
                 break;
             case Qz::CL_OpenUrlInNewWindow:
                 startUrl = QUrl::fromUserInput(pair.text);
-                messages.append("ACTION:OpenUrlInNewWindow" + pair.text);
+                messages.append(QSL("ACTION:OpenUrlInNewWindow") + pair.text);
                 break;
             case Qz::CL_OpenUrl:
                 startUrl = QUrl::fromUserInput(pair.text);
-                messages.append("URL:" + pair.text);
+                messages.append(QSL("URL:") + pair.text);
                 break;
             case Qz::CL_ExitAction:
                 m_isClosing = true;
@@ -703,7 +703,7 @@ void MainApplication::startPrivateBrowsing(const QUrl &startUrl)
     args.append(QSL("--profile=") + ProfileManager::currentProfile());
 
     if (!url.isEmpty()) {
-        args << url.toEncoded();
+        args << QString::fromUtf8(url.toEncoded());
     }
 
     if (!QProcess::startDetached(applicationFilePath(), args)) {
@@ -1220,7 +1220,7 @@ void MainApplication::createJumpList()
     frequent->setVisible(true);
     const QVector<HistoryEntry> mostList = m_history->mostVisited(7);
     for (const HistoryEntry &entry : mostList) {
-        frequent->addLink(IconProvider::iconForUrl(entry.url), entry.title, applicationFilePath(), QStringList{entry.url.toEncoded()});
+        frequent->addLink(IconProvider::iconForUrl(entry.url), entry.title, applicationFilePath(), QStringList{(QString::fromUtf8entry.url.toEncoded())});
     }
 
     // Tasks
@@ -1244,14 +1244,14 @@ RegisterQAppAssociation* MainApplication::associationManager()
 {
     if (!m_registerQAppAssociation) {
         QString desc = tr("Falkon is a new and very fast Qt web browser. Falkon is licensed under GPL version 3 or (at your option) any later version. It is based on QtWebEngine and Qt Framework.");
-        QString fileIconPath = QApplication::applicationFilePath() + ",1";
+        QString fileIconPath = QApplication::applicationFilePath() + QSL(",1");
-        QString appIconPath = QApplication::applicationFilePath() + ",0";
+        QString appIconPath = QApplication::applicationFilePath() + QSL(",0");
-        m_registerQAppAssociation = new RegisterQAppAssociation("Falkon", QApplication::applicationFilePath(), appIconPath, desc, this);
+        m_registerQAppAssociation = new RegisterQAppAssociation(QSL("Falkon"), QApplication::applicationFilePath(), appIconPath, desc, this);
-        m_registerQAppAssociation->addCapability(".html", "FalkonHTML", "Falkon HTML Document", fileIconPath, RegisterQAppAssociation::FileAssociation);
+        m_registerQAppAssociation->addCapability(QSL(".html"), QSL("FalkonHTML"), QSL("Falkon HTML Document"), fileIconPath, RegisterQAppAssociation::FileAssociation);
-        m_registerQAppAssociation->addCapability(".htm", "FalkonHTML", "Falkon HTML Document", fileIconPath, RegisterQAppAssociation::FileAssociation);
+        m_registerQAppAssociation->addCapability(QSL(".htm"), QSL("FalkonHTML"), QSL("Falkon HTML Document"), fileIconPath, RegisterQAppAssociation::FileAssociation);
-        m_registerQAppAssociation->addCapability("http", "FalkonURL", "Falkon URL", appIconPath, RegisterQAppAssociation::UrlAssociation);
+        m_registerQAppAssociation->addCapability(QSL("http"), QSL("FalkonURL"), QSL("Falkon URL"), appIconPath, RegisterQAppAssociation::UrlAssociation);
-        m_registerQAppAssociation->addCapability("https", "FalkonURL", "Falkon URL", appIconPath, RegisterQAppAssociation::UrlAssociation);
+        m_registerQAppAssociation->addCapability(QSL("https"), QSL("FalkonURL"), QSL("Falkon URL"), appIconPath, RegisterQAppAssociation::UrlAssociation);
-        m_registerQAppAssociation->addCapability("ftp", "FalkonURL", "Falkon URL", appIconPath, RegisterQAppAssociation::UrlAssociation);
+        m_registerQAppAssociation->addCapability(QSL("ftp"), QSL("FalkonURL"), QSL("Falkon URL"), appIconPath, RegisterQAppAssociation::UrlAssociation);
     }
     return m_registerQAppAssociation;
 }

src/lib/app/mainmenu.cpp

@@ -177,7 +177,7 @@ void MainMenu::savePageAs()
 
 void MainMenu::sendLink()
 {
-    const QUrl mailUrl = QUrl::fromEncoded("mailto:%20?body=" + QUrl::toPercentEncoding(m_window->weView()->url().toEncoded()) + "&subject=" + QUrl::toPercentEncoding(m_window->weView()->title()));
+    const QUrl mailUrl = QUrl::fromEncoded("mailto:%20?body=" + QUrl::toPercentEncoding(QString::fromUtf8(m_window->weView()->url().toEncoded())) + "&subject=" + QUrl::toPercentEncoding(m_window->weView()->title()));
     QDesktopServices::openUrl(mailUrl);
 }
 

src/lib/app/profilemanager.cpp

@@ -166,10 +166,10 @@ void ProfileManager::updateCurrentProfile()
     // If file exists, just update the profile to current version
     if (versionFile.exists()) {
         versionFile.open(QFile::ReadOnly);
-        QString profileVersion = versionFile.readAll();
+        QString profileVersion = QString::fromUtf8(versionFile.readAll());
         versionFile.close();
 
-        updateProfile(Qz::VERSION, profileVersion.trimmed());
+        updateProfile(QString::fromLatin1(Qz::VERSION), profileVersion.trimmed());
     }
     else {
         copyDataToProfile();
@@ -189,7 +189,7 @@ void ProfileManager::updateProfile(const QString &current, const QString &profil
     Updater::Version prof(profile);
 
     // Profile is from newer version than running application
-    if (prof > Updater::Version(Qz::VERSION)) {
+    if (prof > Updater::Version(QString::fromLatin1(Qz::VERSION))) {
         // Only copy data when profile is not from development version
         if (prof.revisionNumber != 99) {
             copyDataToProfile();
@@ -247,8 +247,8 @@ void ProfileManager::copyDataToProfile()
             sessionFile.remove();
         }
 
-        const QString text = "Incompatible profile version has been detected. To avoid losing your profile data, they were "
+        const QString text = QSL("Incompatible profile version has been detected. To avoid losing your profile data, they were "
-                             "backed up in following file:<br/><br/><b>" + browseDataBackup + "<br/></b>";
+                             "backed up in following file:<br/><br/><b>") + browseDataBackup + QSL("<br/></b>");
         QMessageBox::warning(0, QStringLiteral("Falkon: Incompatible profile version"), text);
     }
 }

src/lib/bookmarks/bookmarksimport/firefoximporter.cpp

@@ -25,7 +25,7 @@
 #include <QSqlQuery>
 #include <QSqlDatabase>
 
-#define CONNECTION "firefox-places-import"
+#define CONNECTION QSL("firefox-places-import")
 
 FirefoxImporter::FirefoxImporter(QObject* parent)
     : BookmarksImporter(parent)

src/lib/bookmarks/bookmarksmanager.cpp

@@ -246,7 +246,7 @@ void BookmarksManager::updateEditBox(BookmarkItem* item)
     }
     else {
         ui->title->setText(item->title());
-        ui->address->setText(item->url().toEncoded());
+        ui->address->setText(QString::fromUtf8(item->url().toEncoded()));
         ui->keyword->setText(item->keyword());
         ui->description->setPlainText(item->description());
 

src/lib/bookmarks/bookmarksmenu.cpp

@@ -165,9 +165,9 @@ void BookmarksMenu::init()
 {
     setTitle(tr("&Bookmarks"));
 
-    addAction(tr("Bookmark &This Page"), this, &BookmarksMenu::bookmarkPage)->setShortcut(QKeySequence("Ctrl+D"));
+    addAction(tr("Bookmark &This Page"), this, &BookmarksMenu::bookmarkPage)->setShortcut(QKeySequence(QSL("Ctrl+D")));
     addAction(tr("Bookmark &All Tabs"), this, &BookmarksMenu::bookmarkAllTabs);
-    addAction(QIcon::fromTheme("bookmarks-organize"), tr("Organize &Bookmarks"), this, &BookmarksMenu::showBookmarksManager)->setShortcut(QKeySequence("Ctrl+Shift+O"));
+    addAction(QIcon::fromTheme(QSL("bookmarks-organize")), tr("Organize &Bookmarks"), this, &BookmarksMenu::showBookmarksManager)->setShortcut(QKeySequence(QSL("Ctrl+Shift+O")));
     addSeparator();
 
     connect(this, SIGNAL(aboutToShow()), this, SLOT(aboutToShow()));

src/lib/bookmarks/bookmarksmodel.cpp

@@ -118,7 +118,7 @@ QVariant BookmarksModel::data(const QModelIndex &index, int role) const
         return itm->isSidebarExpanded();
     case Qt::ToolTipRole:
         if (index.column() == 0 && itm->isUrl()) {
-            return QString("%1\n%2").arg(itm->title(), QString::fromUtf8(itm->url().toEncoded()));
+            return QSL("%1\n%2").arg(itm->title(), QString::fromUtf8(itm->url().toEncoded()));
         }
         // fallthrough
     case Qt::DisplayRole:
@@ -126,7 +126,7 @@ QVariant BookmarksModel::data(const QModelIndex &index, int role) const
         case 0:
             return itm->title();
         case 1:
-            return itm->url().toEncoded();
+            return QString::fromUtf8(itm->url().toEncoded());
         default:
             return {};
         }

src/lib/bookmarks/bookmarkstoolbar.cpp

@@ -75,9 +75,9 @@ void BookmarksToolbar::contextMenuRequested(const QPoint &pos)
     QAction* actNewWindow = menu.addAction(IconProvider::newWindowIcon(), tr("Open in new window"));
     QAction* actNewPrivateWindow = menu.addAction(IconProvider::privateBrowsingIcon(), tr("Open in new private window"));
     menu.addSeparator();
-    QAction* actNewFolder = menu.addAction(QIcon::fromTheme("folder-new"), tr("New Folder"));
+    QAction* actNewFolder = menu.addAction(QIcon::fromTheme(QSL("folder-new")), tr("New Folder"));
     QAction* actEdit = menu.addAction(tr("Edit"));
-    QAction* actDelete = menu.addAction(QIcon::fromTheme("edit-delete"), tr("Delete"));
+    QAction* actDelete = menu.addAction(QIcon::fromTheme(QSL("edit-delete")), tr("Delete"));
     menu.addSeparator();
     m_actShowOnlyIcons = menu.addAction(tr("Show Only Icons"));
     m_actShowOnlyIcons->setCheckable(true);
@@ -276,7 +276,7 @@ void BookmarksToolbar::dropEvent(QDropEvent* e)
         }
     } else {
         const QUrl url = mime->urls().at(0);
-        const QString title = mime->hasText() ? mime->text() : url.toEncoded(QUrl::RemoveScheme);
+        const QString title = mime->hasText() ? mime->text() : QString::fromUtf8(url.toEncoded(QUrl::RemoveScheme));
 
         bookmark = new BookmarkItem(BookmarkItem::Url);
         bookmark->setTitle(title);

src/lib/bookmarks/bookmarkstoolbarbutton.cpp

@@ -240,13 +240,13 @@ QString BookmarksToolbarButton::createTooltip() const
 {
     if (!m_bookmark->description().isEmpty()) {
         if (!m_bookmark->urlString().isEmpty()) {
-            return QString("%1\n%2").arg(m_bookmark->description(), m_bookmark->urlString());
+            return QSL("%1\n%2").arg(m_bookmark->description(), m_bookmark->urlString());
         }
         return m_bookmark->description();
     }
 
     if (!m_bookmark->title().isEmpty() && !m_bookmark->url().isEmpty()) {
-        return QString("%1\n%2").arg(m_bookmark->title(), m_bookmark->urlString());
+        return QSL("%1\n%2").arg(m_bookmark->title(), m_bookmark->urlString());
     }
 
     if (!m_bookmark->title().isEmpty()) {
@@ -434,7 +434,7 @@ void BookmarksToolbarButton::dropEvent(QDropEvent *event)
         }
     } else {
         const QUrl url = mime->urls().at(0);
-        const QString title = mime->hasText() ? mime->text() : url.toEncoded(QUrl::RemoveScheme);
+        const QString title = mime->hasText() ? mime->text() : QString::fromUtf8(url.toEncoded(QUrl::RemoveScheme));
 
         bookmark = new BookmarkItem(BookmarkItem::Url);
         bookmark->setTitle(title);

src/lib/bookmarks/bookmarkstools.cpp

@@ -444,7 +444,7 @@ void BookmarksTools::addFolderContentsToMenu(QObject *receiver, Menu *menu, Book
 bool BookmarksTools::migrateBookmarksIfNecessary(Bookmarks* bookmarks)
 {
     QSqlQuery query(SqlDatabase::instance()->database());
-    query.exec("SELECT name FROM sqlite_master WHERE type='table' AND name='folders'");
+    query.exec(QSL("SELECT name FROM sqlite_master WHERE type='table' AND name='folders'"));
 
     if (!query.next()) {
         return false;
@@ -453,11 +453,11 @@ bool BookmarksTools::migrateBookmarksIfNecessary(Bookmarks* bookmarks)
     std::cout << "Bookmarks: Migrating your bookmarks from SQLite to JSON..." << std::endl;
 
     QHash<QString, BookmarkItem*> folders;
-    folders.insert("bookmarksToolbar", bookmarks->toolbarFolder());
+    folders.insert(QSL("bookmarksToolbar"), bookmarks->toolbarFolder());
-    folders.insert("bookmarksMenu", bookmarks->menuFolder());
+    folders.insert(QSL("bookmarksMenu"), bookmarks->menuFolder());
-    folders.insert("unsorted", bookmarks->unsortedFolder());
+    folders.insert(QSL("unsorted"), bookmarks->unsortedFolder());
 
-    query.exec("SELECT name, subfolder FROM folders");
+    query.exec(QSL("SELECT name, subfolder FROM folders"));
     while (query.next()) {
         const QString title = query.value(0).toString();
         bool subfolder = query.value(1).toString() == QLatin1String("yes");
@@ -468,7 +468,7 @@ bool BookmarksTools::migrateBookmarksIfNecessary(Bookmarks* bookmarks)
         folders.insert(folder->title(), folder);
     }
 
-    query.exec("SELECT title, folder, url FROM bookmarks ORDER BY position ASC");
+    query.exec(QSL("SELECT title, folder, url FROM bookmarks ORDER BY position ASC"));
     while (query.next()) {
         const QString title = query.value(0).toString();
         const QString folder = query.value(1).toString();
@@ -485,9 +485,9 @@ bool BookmarksTools::migrateBookmarksIfNecessary(Bookmarks* bookmarks)
         bookmark->setUrl(url);
     }
 
-    query.exec("DROP TABLE folders");
+    query.exec(QSL("DROP TABLE folders"));
-    query.exec("DROP TABLE bookmarks");
+    query.exec(QSL("DROP TABLE bookmarks"));
-    query.exec("VACUUM");
+    query.exec(QSL("VACUUM"));
 
     std::cout << "Bookmarks: Bookmarks successfully migrated!" << std::endl;
     return true;

src/lib/cookies/cookiejar.cpp

@@ -50,12 +50,12 @@ CookieJar::~CookieJar()
 void CookieJar::loadSettings()
 {
     Settings settings;
-    settings.beginGroup("Cookie-Settings");
+    settings.beginGroup(QSL("Cookie-Settings"));
-    m_allowCookies = settings.value("allowCookies", true).toBool();
+    m_allowCookies = settings.value(QSL("allowCookies"), true).toBool();
-    m_filterThirdParty = settings.value("filterThirdPartyCookies", false).toBool();
+    m_filterThirdParty = settings.value(QSL("filterThirdPartyCookies"), false).toBool();
-    m_filterTrackingCookie = settings.value("filterTrackingCookie", false).toBool();
+    m_filterTrackingCookie = settings.value(QSL("filterTrackingCookie"), false).toBool();
-    m_whitelist = settings.value("whitelist", QStringList()).toStringList();
+    m_whitelist = settings.value(QSL("whitelist"), QStringList()).toStringList();
-    m_blacklist = settings.value("blacklist", QStringList()).toStringList();
+    m_blacklist = settings.value(QSL("blacklist"), QStringList()).toStringList();
     settings.endGroup();
 }
 

src/lib/cookies/cookiemanager.cpp

@@ -66,13 +66,13 @@ CookieManager::CookieManager(QWidget *parent)
 
     // Cookie Settings
     Settings settings;
-    settings.beginGroup("Cookie-Settings");
+    settings.beginGroup(QSL("Cookie-Settings"));
-    ui->saveCookies->setChecked(settings.value("allowCookies", true).toBool());
+    ui->saveCookies->setChecked(settings.value(QSL("allowCookies"), true).toBool());
-    ui->filter3rdParty->setChecked(settings.value("filterThirdPartyCookies", false).toBool());
+    ui->filter3rdParty->setChecked(settings.value(QSL("filterThirdPartyCookies"), false).toBool());
-    ui->filterTracking->setChecked(settings.value("filterTrackingCookie", false).toBool());
+    ui->filterTracking->setChecked(settings.value(QSL("filterTrackingCookie"), false).toBool());
-    ui->deleteCookiesOnClose->setChecked(settings.value("deleteCookiesOnClose", false).toBool());
+    ui->deleteCookiesOnClose->setChecked(settings.value(QSL("deleteCookiesOnClose"), false).toBool());
-    ui->whiteList->addItems(settings.value("whitelist", QStringList()).toStringList());
+    ui->whiteList->addItems(settings.value(QSL("whitelist"), QStringList()).toStringList());
-    ui->blackList->addItems(settings.value("blacklist", QStringList()).toStringList());
+    ui->blackList->addItems(settings.value(QSL("blacklist"), QStringList()).toStringList());
     settings.endGroup();
 
     ui->search->setPlaceholderText(tr("Search"));
@@ -84,7 +84,7 @@ CookieManager::CookieManager(QWidget *parent)
     ui->whiteList->sortItems(Qt::AscendingOrder);
     ui->blackList->sortItems(Qt::AscendingOrder);
 
-    auto* removeShortcut = new QShortcut(QKeySequence("Del"), this);
+    auto* removeShortcut = new QShortcut(QKeySequence(QSL("Del")), this);
     connect(removeShortcut, &QShortcut::activated, this, &CookieManager::deletePressed);
 
     connect(ui->search, &QLineEdit::textChanged, this, &CookieManager::filterString);
@@ -97,7 +97,7 @@ CookieManager::CookieManager(QWidget *parent)
         addCookie(cookie);
     }
 
-    QzTools::setWmClass("Cookies", this);
+    QzTools::setWmClass(QSL("Cookies"), this);
 }
 
 void CookieManager::removeAll()
@@ -171,12 +171,12 @@ void CookieManager::currentItemChanged(QTreeWidgetItem* current, QTreeWidgetItem
 
     const QNetworkCookie cookie = qvariant_cast<QNetworkCookie>(current->data(0, Qt::UserRole + 10));
 
-    ui->name->setText(cookie.name());
+    ui->name->setText(QString::fromUtf8(cookie.name()));
-    ui->value->setText(cookie.value());
+    ui->value->setText(QString::fromUtf8(cookie.value()));
     ui->server->setText(cookie.domain());
     ui->path->setText(cookie.path());
     cookie.isSecure() ? ui->secure->setText(tr("Secure only")) : ui->secure->setText(tr("All connections"));
-    cookie.isSessionCookie() ? ui->expiration->setText(tr("Session cookie")) : ui->expiration->setText(QDateTime(cookie.expirationDate()).toString("hh:mm:ss dddd d. MMMM yyyy"));
+    cookie.isSessionCookie() ? ui->expiration->setText(tr("Session cookie")) : ui->expiration->setText(QDateTime(cookie.expirationDate()).toString(QSL("hh:mm:ss dddd d. MMMM yyyy")));
 
     ui->removeOne->setText(tr("Remove cookie"));
 }
@@ -274,7 +274,7 @@ void CookieManager::filterString(const QString &string)
     }
     else {
         for (int i = 0; i < ui->cookieTree->topLevelItemCount(); ++i) {
-            QString text = "." + ui->cookieTree->topLevelItem(i)->text(0);
+            QString text = QSL(".") + ui->cookieTree->topLevelItem(i)->text(0);
             ui->cookieTree->topLevelItem(i)->setHidden(!text.contains(string, Qt::CaseInsensitive));
             ui->cookieTree->topLevelItem(i)->setExpanded(true);
         }
@@ -301,8 +301,8 @@ void CookieManager::addCookie(const QNetworkCookie &cookie)
         item = new QTreeWidgetItem(newParent);
     }
 
-    item->setText(0, "." + domain);
+    item->setText(0, QSL(".") + domain);
-    item->setText(1, cookie.name());
+    item->setText(1, QString::fromUtf8(cookie.name()));
     item->setData(0, Qt::UserRole + 10, QVariant::fromValue(cookie));
     ui->cookieTree->addTopLevelItem(item);
 
@@ -340,13 +340,13 @@ void CookieManager::closeEvent(QCloseEvent* e)
     }
 
     Settings settings;
-    settings.beginGroup("Cookie-Settings");
+    settings.beginGroup(QSL("Cookie-Settings"));
-    settings.setValue("allowCookies", ui->saveCookies->isChecked());
+    settings.setValue(QSL("allowCookies"), ui->saveCookies->isChecked());
-    settings.setValue("filterThirdPartyCookies", ui->filter3rdParty->isChecked());
+    settings.setValue(QSL("filterThirdPartyCookies"), ui->filter3rdParty->isChecked());
-    settings.setValue("filterTrackingCookie", ui->filterTracking->isChecked());
+    settings.setValue(QSL("filterTrackingCookie"), ui->filterTracking->isChecked());
-    settings.setValue("deleteCookiesOnClose", ui->deleteCookiesOnClose->isChecked());
+    settings.setValue(QSL("deleteCookiesOnClose"), ui->deleteCookiesOnClose->isChecked());
-    settings.setValue("whitelist", whitelist);
+    settings.setValue(QSL("whitelist"), whitelist);
-    settings.setValue("blacklist", blacklist);
+    settings.setValue(QSL("blacklist"), blacklist);
     settings.endGroup();
 
     mApp->cookieJar()->loadSettings();

src/lib/downloads/downloaditem.cpp

@@ -175,7 +175,7 @@ void DownloadItem::receivedOrTotalBytesChanged()
     m_total = total;
 
     updateDownloadInfo(m_currSpeed, m_received, m_total);
-    emit progressChanged(m_currSpeed, m_received, m_total);
+    Q_EMIT progressChanged(m_currSpeed, m_received, m_total);
 }
 
 int DownloadItem::progress()
@@ -304,21 +304,21 @@ void DownloadItem::mouseDoubleClickEvent(QMouseEvent* e)
 void DownloadItem::customContextMenuRequested(const QPoint &pos)
 {
     QMenu menu;
-    menu.addAction(QIcon::fromTheme("document-open"), tr("Open File"), this, &DownloadItem::openFile);
+    menu.addAction(QIcon::fromTheme(QSL("document-open")), tr("Open File"), this, &DownloadItem::openFile);
 
     menu.addAction(tr("Open Folder"), this, &DownloadItem::openFolder);
     menu.addSeparator();
-    menu.addAction(QIcon::fromTheme("edit-copy"), tr("Copy Download Link"), this, &DownloadItem::copyDownloadLink);
+    menu.addAction(QIcon::fromTheme(QSL("edit-copy")), tr("Copy Download Link"), this, &DownloadItem::copyDownloadLink);
     menu.addSeparator();
-    menu.addAction(QIcon::fromTheme("process-stop"), tr("Cancel downloading"), this, &DownloadItem::stop)->setEnabled(m_downloading);
+    menu.addAction(QIcon::fromTheme(QSL("process-stop")), tr("Cancel downloading"), this, &DownloadItem::stop)->setEnabled(m_downloading);
 
     if (m_download->isPaused()) {
-        menu.addAction(QIcon::fromTheme("media-playback-start"), tr("Resume downloading"), this, &DownloadItem::pauseResume)->setEnabled(m_downloading);
+        menu.addAction(QIcon::fromTheme(QSL("media-playback-start")), tr("Resume downloading"), this, &DownloadItem::pauseResume)->setEnabled(m_downloading);
     } else {
-        menu.addAction(QIcon::fromTheme("media-playback-pause"), tr("Pause downloading"), this, &DownloadItem::pauseResume)->setEnabled(m_downloading);
+        menu.addAction(QIcon::fromTheme(QSL("media-playback-pause")), tr("Pause downloading"), this, &DownloadItem::pauseResume)->setEnabled(m_downloading);
     }
 
-    menu.addAction(QIcon::fromTheme("list-remove"), tr("Remove From List"), this, &DownloadItem::clear)->setEnabled(!m_downloading);
+    menu.addAction(QIcon::fromTheme(QSL("list-remove")), tr("Remove From List"), this, &DownloadItem::clear)->setEnabled(!m_downloading);
 
     if (m_downloading || ui->downloadInfo->text().startsWith(tr("Cancelled")) || ui->downloadInfo->text().startsWith(tr("Error"))) {
         menu.actions().at(0)->setEnabled(false);
@@ -359,8 +359,8 @@ void DownloadItem::openFolder()
         winFileName.append(QSL(".download"));
     }
 
-    winFileName.replace(QLatin1Char('/'), "\\");
+    winFileName.replace(QLatin1Char('/'), QSL("\\"));
-    QString shExArg = "/e,/select,\"" + winFileName + "\"";
+    QString shExArg = QSL("/e,/select,\"") + winFileName + QSL("\"");
     ShellExecute(NULL, NULL, TEXT("explorer.exe"), shExArg.toStdWString().c_str(), NULL, SW_SHOW);
 #else
     QDesktopServices::openUrl(QUrl::fromLocalFile(m_path));

src/lib/downloads/downloadmanager.cpp

@@ -64,17 +64,17 @@ DownloadManager::DownloadManager(QWidget* parent)
         QtWin::extendFrameIntoClientArea(this, -1, -1, -1, -1);
     }
 #endif
-    ui->clearButton->setIcon(QIcon::fromTheme("edit-clear"));
+    ui->clearButton->setIcon(QIcon::fromTheme(QSL("edit-clear")));
     QzTools::centerWidgetOnScreen(this);
 
     connect(ui->clearButton, &QAbstractButton::clicked, this, &DownloadManager::clearList);
 
-    auto* clearShortcut = new QShortcut(QKeySequence("CTRL+L"), this);
+    auto* clearShortcut = new QShortcut(QKeySequence(QSL("CTRL+L")), this);
     connect(clearShortcut, &QShortcut::activated, this, &DownloadManager::clearList);
 
     loadSettings();
 
-    QzTools::setWmClass("Download Manager", this);
+    QzTools::setWmClass(QSL("Download Manager"), this);
 
     connect(m_model, &DownloadManagerModel::downloadAdded, this, &DownloadManager::downloadAdded);
 }
@@ -82,15 +82,15 @@ DownloadManager::DownloadManager(QWidget* parent)
 void DownloadManager::loadSettings()
 {
     Settings settings;
-    settings.beginGroup("DownloadManager");
+    settings.beginGroup(QSL("DownloadManager"));
-    m_downloadPath = settings.value("defaultDownloadPath", QString()).toString();
+    m_downloadPath = settings.value(QSL("defaultDownloadPath"), QString()).toString();
-    m_lastDownloadPath = settings.value("lastDownloadPath", QStandardPaths::writableLocation(QStandardPaths::DownloadLocation)).toString();
+    m_lastDownloadPath = settings.value(QSL("lastDownloadPath"), QStandardPaths::writableLocation(QStandardPaths::DownloadLocation)).toString();
-    m_closeOnFinish = settings.value("CloseManagerOnFinish", false).toBool();
+    m_closeOnFinish = settings.value(QSL("CloseManagerOnFinish"), false).toBool();
-    m_useNativeDialog = settings.value("useNativeDialog", DEFAULT_DOWNLOAD_USE_NATIVE_DIALOG).toBool();
+    m_useNativeDialog = settings.value(QSL("useNativeDialog"), DEFAULT_DOWNLOAD_USE_NATIVE_DIALOG).toBool();
 
-    m_useExternalManager = settings.value("UseExternalManager", false).toBool();
+    m_useExternalManager = settings.value(QSL("UseExternalManager"), false).toBool();
-    m_externalExecutable = settings.value("ExternalManagerExecutable", QString()).toString();
+    m_externalExecutable = settings.value(QSL("ExternalManagerExecutable"), QString()).toString();
-    m_externalArguments = settings.value("ExternalManagerArguments", QString()).toString();
+    m_externalArguments = settings.value(QSL("ExternalManagerArguments"), QString()).toString();
     settings.endGroup();
 
     if (!m_externalArguments.contains(QLatin1String("%d"))) {
@@ -174,7 +174,7 @@ QWinTaskbarButton *DownloadManager::taskbarButton()
 void DownloadManager::startExternalManager(const QUrl &url)
 {
     QString arguments = m_externalArguments;
-    arguments.replace(QLatin1String("%d"), url.toEncoded());
+    arguments.replace(QLatin1String("%d"), QString::fromUtf8(url.toEncoded()));
 
     QzTools::startExternalProcess(m_externalExecutable, arguments);
     m_lastDownloadOption = ExternalManager;

src/lib/downloads/downloadmanagermodel.cpp

@@ -42,14 +42,14 @@ void DownloadManagerModel::addDownload(DownloadItem *item)
 {
     m_downloads.append(item);
     connect(item, &DownloadItem::deleteItem, this, &DownloadManagerModel::removeDownload);
-    emit downloadAdded(item);
+    Q_EMIT downloadAdded(item);
 }
 
 void DownloadManagerModel::removeDownload(DownloadItem *item)
 {
     if (item && !item->isDownloading()) {
         delete item;
-        emit downloadRemoved(item);
+        Q_EMIT downloadRemoved(item);
     }
 }
 

src/lib/downloads/downloadmanagermodel.h

@@ -37,7 +37,7 @@ public:
 private:
     QList<DownloadItem *> m_downloads;
 
-signals:
+Q_SIGNALS:
     void downloadAdded(DownloadItem *item);
     void downloadRemoved(DownloadItem *item);
 };

src/lib/downloads/downloadoptionsdialog.cpp

@@ -31,7 +31,7 @@ DownloadOptionsDialog::DownloadOptionsDialog(const QString &fileName, QWebEngine
 {
     ui->setupUi(this);
 
-    ui->fileName->setText("<b>" + fileName + "</b>");
+    ui->fileName->setText(QSL("<b>") + fileName + QSL("</b>"));
     ui->fromServer->setText(m_downloadItem->url().host());
 
     const QIcon fileIcon = IconProvider::instance()->standardIcon(QStyle::SP_FileIcon);

src/lib/history/history.cpp

@@ -46,8 +46,8 @@ HistoryModel* History::model()
 void History::loadSettings()
 {
     Settings settings;
-    settings.beginGroup("Web-Browser-Settings");
+    settings.beginGroup(QSL("Web-Browser-Settings"));
-    m_isSaving = settings.value("allowHistory", true).toBool();
+    m_isSaving = settings.value(QSL("allowHistory"), true).toBool();
     settings.endGroup();
 }
 
@@ -96,7 +96,7 @@ void History::addHistoryEntry(const QUrl &url, QString title)
                 entry.count = 1;
                 entry.date = QDateTime::currentDateTime();
                 entry.url = url;
-                entry.urlString = url.toEncoded();
+                entry.urlString = QString::fromUtf8(url.toEncoded());
                 entry.title = title;
                 Q_EMIT historyEntryAdded(entry);
             });
@@ -118,7 +118,7 @@ void History::addHistoryEntry(const QUrl &url, QString title)
                 before.count = count;
                 before.date = date;
                 before.url = url;
-                before.urlString = url.toEncoded();
+                before.urlString = QString::fromUtf8(url.toEncoded());
                 before.title = oldTitle;
 
                 HistoryEntry after = before;
@@ -150,7 +150,7 @@ void History::deleteHistoryEntry(const QList<int> &list)
 
     for (int index : list) {
         QSqlQuery query(SqlDatabase::instance()->database());
-        query.prepare("SELECT count, date, url, title FROM history WHERE id=?");
+        query.prepare(QSL("SELECT count, date, url, title FROM history WHERE id=?"));
         query.addBindValue(index);
         query.exec();
 
@@ -163,14 +163,14 @@ void History::deleteHistoryEntry(const QList<int> &list)
         entry.count = query.value(0).toInt();
         entry.date = QDateTime::fromMSecsSinceEpoch(query.value(1).toLongLong());
         entry.url = query.value(2).toUrl();
-        entry.urlString = entry.url.toEncoded();
+        entry.urlString = QString::fromUtf8(entry.url.toEncoded());
         entry.title = query.value(3).toString();
 
-        query.prepare("DELETE FROM history WHERE id=?");
+        query.prepare(QSL("DELETE FROM history WHERE id=?"));
         query.addBindValue(index);
         query.exec();
 
-        query.prepare("DELETE FROM icons WHERE url=?");
+        query.prepare(QSL("DELETE FROM icons WHERE url=?"));
         query.addBindValue(entry.url.toEncoded(QUrl::RemoveFragment));
         query.exec();
 
@@ -195,7 +195,7 @@ void History::deleteHistoryEntry(const QString &url)
 void History::deleteHistoryEntry(const QString &url, const QString &title)
 {
     QSqlQuery query(SqlDatabase::instance()->database());
-    query.prepare("SELECT id FROM history WHERE url=? AND title=?");
+    query.prepare(QSL("SELECT id FROM history WHERE url=? AND title=?"));
     query.bindValue(0, url);
     query.bindValue(1, title);
     query.exec();
@@ -214,7 +214,7 @@ QList<int> History::indexesFromTimeRange(qint64 start, qint64 end)
     }
 
     QSqlQuery query(SqlDatabase::instance()->database());
-    query.prepare("SELECT id FROM history WHERE date BETWEEN ? AND ?");
+    query.prepare(QSL("SELECT id FROM history WHERE date BETWEEN ? AND ?"));
     query.addBindValue(end);
     query.addBindValue(start);
     query.exec();
@@ -230,7 +230,7 @@ QVector<HistoryEntry> History::mostVisited(int count)
 {
     QVector<HistoryEntry> list;
     QSqlQuery query(SqlDatabase::instance()->database());
-    query.prepare(QString("SELECT count, date, id, title, url FROM history ORDER BY count DESC LIMIT %1").arg(count));
+    query.prepare(QSL("SELECT count, date, id, title, url FROM history ORDER BY count DESC LIMIT %1").arg(count));
     query.exec();
     while (query.next()) {
         HistoryEntry entry;
@@ -303,8 +303,8 @@ QList<HistoryEntry> History::searchHistoryEntry(const QString &text)
     QList<HistoryEntry> list;
     QSqlQuery query(SqlDatabase::instance()->database());
     query.prepare(QSL("SELECT count, date, id, title, url FROM history WHERE title LIKE ? OR url LIKE ?"));
-    query.bindValue(0, QString("%%1%").arg(text));
+    query.bindValue(0, QSL("%%1%").arg(text));
-    query.bindValue(1, QString("%%1%").arg(text));
+    query.bindValue(1, QSL("%%1%").arg(text));
     query.exec();
     while (query.next()) {
         HistoryEntry entry;

src/lib/history/historymenu.cpp

@@ -241,10 +241,10 @@ void HistoryMenu::init()
     act = addAction(IconProvider::standardIcon(QStyle::SP_ArrowForward), tr("&Forward"), this, &HistoryMenu::goForward);
     act->setShortcut(QzTools::actionShortcut(QKeySequence::Forward, Qt::ALT + Qt::Key_Right, QKeySequence::Back, Qt::ALT + Qt::Key_Left));
 
-    act = addAction(QIcon::fromTheme("go-home"), tr("&Home"), this, &HistoryMenu::goHome);
+    act = addAction(QIcon::fromTheme(QSL("go-home")), tr("&Home"), this, &HistoryMenu::goHome);
     act->setShortcut(QKeySequence(Qt::ALT | Qt::Key_Home));
 
-    act = addAction(QIcon::fromTheme("deep-history", QIcon(":/icons/menu/history.svg")), tr("Show &All History"), this, &HistoryMenu::showHistoryManager);
+    act = addAction(QIcon::fromTheme(QSL("deep-history"), QIcon(QSL(":/icons/menu/history.svg"))), tr("Show &All History"), this, &HistoryMenu::showHistoryManager);
     act->setShortcut(QKeySequence(Qt::CTRL | Qt::SHIFT | Qt::Key_H));
 
     addSeparator();

src/lib/history/historymodel.cpp

@@ -29,10 +29,10 @@ static QString dateTimeToString(const QDateTime &dateTime)
 {
     const QDateTime current = QDateTime::currentDateTime();
     if (current.date() == dateTime.date()) {
-        return dateTime.time().toString("h:mm");
+        return dateTime.time().toString(QSL("h:mm"));
     }
 
-    return dateTime.toString("d.M.yyyy h:mm");
+    return dateTime.toString(QSL("d.M.yyyy h:mm"));
 }
 
 HistoryModel::HistoryModel(History* history)
@@ -87,7 +87,7 @@ QVariant HistoryModel::data(const QModelIndex &index, int role) const
         case Qt::EditRole:
             return index.column() == 0 ? item->title : QVariant();
         case Qt::DecorationRole:
-            return index.column() == 0 ? QIcon::fromTheme(QSL("view-calendar"), QIcon(":/icons/menu/history_entry.svg")) : QVariant();
+            return index.column() == 0 ? QIcon::fromTheme(QSL("view-calendar"), QIcon(QSL(":/icons/menu/history_entry.svg"))) : QVariant();
         }
 
         return {};
@@ -114,7 +114,7 @@ QVariant HistoryModel::data(const QModelIndex &index, int role) const
         return -1;
     case Qt::ToolTipRole:
         if (index.column() == 0) {
-            return QString("%1\n%2").arg(entry.title, entry.urlString);
+            return QSL("%1\n%2").arg(entry.title, entry.urlString);
         }
         // fallthrough
     case Qt::DisplayRole:
@@ -295,7 +295,7 @@ void HistoryModel::fetchMore(const QModelIndex &parent)
     }
 
     QSqlQuery query(SqlDatabase::instance()->database());
-    query.prepare("SELECT id, count, title, url, date FROM history WHERE date BETWEEN ? AND ? ORDER BY date DESC");
+    query.prepare(QSL("SELECT id, count, title, url, date FROM history WHERE date BETWEEN ? AND ? ORDER BY date DESC"));
     query.addBindValue(parentItem->endTimestamp());
     query.addBindValue(parentItem->startTimestamp());
     query.exec();
@@ -309,7 +309,7 @@ void HistoryModel::fetchMore(const QModelIndex &parent)
         entry.title = query.value(2).toString();
         entry.url = query.value(3).toUrl();
         entry.date = QDateTime::fromMSecsSinceEpoch(query.value(4).toLongLong());
-        entry.urlString = entry.url.toEncoded();
+        entry.urlString = QString::fromUtf8(entry.url.toEncoded());
 
         if (!idList.contains(entry.id)) {
             list.append(entry);
@@ -445,7 +445,7 @@ void HistoryModel::checkEmptyParentItem(HistoryItem* item)
 void HistoryModel::init()
 {
     QSqlQuery query(SqlDatabase::instance()->database());
-    query.exec("SELECT MIN(date) FROM history");
+    query.exec(QSL("SELECT MIN(date) FROM history"));
     if (!query.next()) {
         return;
     }
@@ -487,11 +487,11 @@ void HistoryModel::init()
 
             timestamp = QDateTime(startDate, QTime(23, 59, 59), QTimeZone::systemTimeZone()).toMSecsSinceEpoch();
             endTimestamp = QDateTime(endDate, QTime(), QTimeZone::systemTimeZone()).toMSecsSinceEpoch();
-            itemName = QString("%1 %2").arg(History::titleCaseLocalizedMonth(timestampDate.month()), QString::number(timestampDate.year()));
+            itemName = QSL("%1 %2").arg(History::titleCaseLocalizedMonth(timestampDate.month()), QString::number(timestampDate.year()));
         }
 
         QSqlQuery query(SqlDatabase::instance()->database());
-        query.prepare("SELECT id FROM history WHERE date BETWEEN ? AND ? LIMIT 1");
+        query.prepare(QSL("SELECT id FROM history WHERE date BETWEEN ? AND ? LIMIT 1"));
         query.addBindValue(endTimestamp);
         query.addBindValue(timestamp);
         query.exec();

src/lib/navigation/completer/locationcompletermodel.cpp

@@ -67,7 +67,7 @@ QSqlQuery LocationCompleterModel::createDomainQuery(const QString &text)
     }
 
     bool withoutWww = text.startsWith(QLatin1Char('w')) && !text.startsWith(QLatin1String("www."));
-    QString query = "SELECT url FROM history WHERE ";
+    QString query = QSL("SELECT url FROM history WHERE ");
 
     if (withoutWww) {
         query.append(QLatin1String("url NOT LIKE ? AND url NOT LIKE ? AND "));
@@ -82,16 +82,16 @@ QSqlQuery LocationCompleterModel::createDomainQuery(const QString &text)
     sqlQuery.prepare(query);
 
     if (withoutWww) {
-        sqlQuery.addBindValue(QString("http://www.%"));
+        sqlQuery.addBindValue(QSL("http://www.%"));
-        sqlQuery.addBindValue(QString("https://www.%"));
+        sqlQuery.addBindValue(QSL("https://www.%"));
-        sqlQuery.addBindValue(QString("http://%1%").arg(text));
+        sqlQuery.addBindValue(QSL("http://%1%").arg(text));
-        sqlQuery.addBindValue(QString("https://%1%").arg(text));
+        sqlQuery.addBindValue(QSL("https://%1%").arg(text));
     }
     else {
-        sqlQuery.addBindValue(QString("http://%1%").arg(text));
+        sqlQuery.addBindValue(QSL("http://%1%").arg(text));
-        sqlQuery.addBindValue(QString("https://%1%").arg(text));
+        sqlQuery.addBindValue(QSL("https://%1%").arg(text));
-        sqlQuery.addBindValue(QString("http://www.%1%").arg(text));
+        sqlQuery.addBindValue(QSL("http://www.%1%").arg(text));
-        sqlQuery.addBindValue(QString("https://www.%1%").arg(text));
+        sqlQuery.addBindValue(QSL("https://www.%1%").arg(text));
     }
 
     return sqlQuery;
@@ -122,13 +122,13 @@ QSqlQuery LocationCompleterModel::createHistoryQuery(const QString &searchString
     sqlQuery.prepare(query);
 
     if (exactMatch) {
-        sqlQuery.addBindValue(QString("%%1%").arg(searchString));
+        sqlQuery.addBindValue(QSL("%%1%").arg(searchString));
-        sqlQuery.addBindValue(QString("%%1%").arg(searchString));
+        sqlQuery.addBindValue(QSL("%%1%").arg(searchString));
     }
     else {
         for (const QString &str : qAsConst(searchList)) {
-            sqlQuery.addBindValue(QString("%%1%").arg(str));
+            sqlQuery.addBindValue(QSL("%%1%").arg(str));
-            sqlQuery.addBindValue(QString("%%1%").arg(str));
+            sqlQuery.addBindValue(QSL("%%1%").arg(str));
         }
     }
 

src/lib/navigation/completer/locationcompleterrefreshjob.cpp

@@ -162,7 +162,7 @@ void LocationCompleterRefreshJob::completeFromHistory()
             }
 
             auto* item = new QStandardItem();
-            item->setText(bookmark->url().toEncoded());
+            item->setText(QString::fromUtf8(bookmark->url().toEncoded()));
             item->setData(-1, LocationCompleterModel::IdRole);
             item->setData(bookmark->title(), LocationCompleterModel::TitleRole);
             item->setData(bookmark->url(), LocationCompleterModel::UrlRole);
@@ -193,7 +193,7 @@ void LocationCompleterRefreshJob::completeFromHistory()
             }
 
             auto* item = new QStandardItem();
-            item->setText(url.toEncoded());
+            item->setText(QString::fromUtf8(url.toEncoded()));
             item->setData(query.value(0), LocationCompleterModel::IdRole);
             item->setData(query.value(2), LocationCompleterModel::TitleRole);
             item->setData(url, LocationCompleterModel::UrlRole);
@@ -215,7 +215,7 @@ void LocationCompleterRefreshJob::completeMostVisited()
         auto* item = new QStandardItem();
         const QUrl url = query.value(1).toUrl();
 
-        item->setText(url.toEncoded());
+        item->setText(QString::fromUtf8(url.toEncoded()));
         item->setData(query.value(0), LocationCompleterModel::IdRole);
         item->setData(query.value(2), LocationCompleterModel::TitleRole);
         item->setData(url, LocationCompleterModel::UrlRole);

src/lib/navigation/locationbar.cpp

@@ -489,7 +489,7 @@ void LocationBar::focusInEvent(QFocusEvent* event)
     clearTextFormat();
     LineEdit::focusInEvent(event);
 
-    if (m_window && Settings().value("Browser-View-Settings/instantBookmarksToolbar").toBool()) {
+    if (m_window && Settings().value(QSL("Browser-View-Settings/instantBookmarksToolbar")).toBool()) {
         m_window->bookmarksToolbar()->show();
     }
 }
@@ -512,7 +512,7 @@ void LocationBar::focusOutEvent(QFocusEvent* event)
 
     refreshTextFormat();
 
-    if (m_window && Settings().value("Browser-View-Settings/instantBookmarksToolbar").toBool()) {
+    if (m_window && Settings().value(QSL("Browser-View-Settings/instantBookmarksToolbar")).toBool()) {
         m_window->bookmarksToolbar()->hide();
     }
 }
@@ -660,10 +660,10 @@ void LocationBar::loadFinished()
 void LocationBar::loadSettings()
 {
     Settings settings;
-    settings.beginGroup("AddressBar");
+    settings.beginGroup(QSL("AddressBar"));
-    m_progressStyle = static_cast<ProgressStyle>(settings.value("ProgressStyle", 0).toInt());
+    m_progressStyle = static_cast<ProgressStyle>(settings.value(QSL("ProgressStyle"), 0).toInt());
-    bool customColor = settings.value("UseCustomProgressColor", false).toBool();
+    bool customColor = settings.value(QSL("UseCustomProgressColor"), false).toBool();
-    m_progressColor = customColor ? settings.value("CustomProgressColor", palette().color(QPalette::Highlight)).value<QColor>() : QColor();
+    m_progressColor = customColor ? settings.value(QSL("CustomProgressColor"), palette().color(QPalette::Highlight)).value<QColor>() : QColor();
     settings.endGroup();
 }
 

src/lib/navigation/websearchbar.cpp

@@ -150,8 +150,8 @@ void WebSearchBar::openSearchEnginesDialog()
 void WebSearchBar::enableSearchSuggestions(bool enable)
 {
     Settings settings;
-    settings.beginGroup("SearchEngines");
+    settings.beginGroup(QSL("SearchEngines"));
-    settings.setValue("showSuggestions", enable);
+    settings.setValue(QSL("showSuggestions"), enable);
     settings.endGroup();
 
     qzSettings->showWSBSearchSuggestions = enable;
@@ -213,8 +213,8 @@ void WebSearchBar::searchChanged(const ButtonWithMenu::Item &item)
 void WebSearchBar::instantSearchChanged(bool enable)
 {
     Settings settings;
-    settings.beginGroup("SearchEngines");
+    settings.beginGroup(QSL("SearchEngines"));
-    settings.setValue("SearchOnEngineChange", enable);
+    settings.setValue(QSL("SearchOnEngineChange"), enable);
     settings.endGroup();
     qzSettings->searchOnEngineChange = enable;
 }

src/lib/network/networkmanager.cpp

@@ -268,18 +268,18 @@ void NetworkManager::unregisterExtensionSchemeHandler(ExtensionSchemeHandler *ha
 void NetworkManager::loadSettings()
 {
     Settings settings;
-    settings.beginGroup("Language");
+    settings.beginGroup(QSL("Language"));
-    QStringList langs = settings.value("acceptLanguage", AcceptLanguage::defaultLanguage()).toStringList();
+    QStringList langs = settings.value(QSL("acceptLanguage"), AcceptLanguage::defaultLanguage()).toStringList();
     settings.endGroup();
-    mApp->webProfile()->setHttpAcceptLanguage(AcceptLanguage::generateHeader(langs));
+    mApp->webProfile()->setHttpAcceptLanguage(QString::fromLatin1(AcceptLanguage::generateHeader(langs)));
 
     QNetworkProxy proxy;
-    settings.beginGroup("Web-Proxy");
+    settings.beginGroup(QSL("Web-Proxy"));
-    const int proxyType = settings.value("ProxyType", 2).toInt();
+    const int proxyType = settings.value(QSL("ProxyType"), 2).toInt();
-    proxy.setHostName(settings.value("HostName", QString()).toString());
+    proxy.setHostName(settings.value(QSL("HostName"), QString()).toString());
-    proxy.setPort(settings.value("Port", 8080).toInt());
+    proxy.setPort(settings.value(QSL("Port"), 8080).toInt());
-    proxy.setUser(settings.value("Username", QString()).toString());
+    proxy.setUser(settings.value(QSL("Username"), QString()).toString());
-    proxy.setPassword(settings.value("Password", QString()).toString());
+    proxy.setPassword(settings.value(QSL("Password"), QString()).toString());
     settings.endGroup();
 
     if (proxyType == 0) {
@@ -300,16 +300,16 @@ void NetworkManager::loadSettings()
 
     m_urlInterceptor->loadSettings();
 
-    settings.beginGroup("Web-Browser-Settings");
+    settings.beginGroup(QSL("Web-Browser-Settings"));
-    m_ignoredSslHosts = settings.value("IgnoredSslHosts", QStringList()).toStringList();
+    m_ignoredSslHosts = settings.value(QSL("IgnoredSslHosts"), QStringList()).toStringList();
     settings.endGroup();
 }
 
 void NetworkManager::saveIgnoredSslHosts()
 {
     Settings settings;
-    settings.beginGroup("Web-Browser-Settings");
+    settings.beginGroup(QSL("Web-Browser-Settings"));
-    settings.setValue("IgnoredSslHosts", m_ignoredSslHosts);
+    settings.setValue(QSL("IgnoredSslHosts"), m_ignoredSslHosts);
     settings.endGroup();
 }
 

src/lib/network/networkurlinterceptor.cpp

@@ -84,8 +84,8 @@ void NetworkUrlInterceptor::loadSettings()
     QMutexLocker lock(&m_mutex);
 
     Settings settings;
-    settings.beginGroup("Web-Browser-Settings");
+    settings.beginGroup(QSL("Web-Browser-Settings"));
-    m_sendDNT = settings.value("DoNotTrack", false).toBool();
+    m_sendDNT = settings.value(QSL("DoNotTrack"), false).toBool();
     settings.endGroup();
 
     m_usePerDomainUserAgent = mApp->userAgentManager()->usePerDomainUserAgents();

src/lib/network/schemehandlers/falkonschemehandler.cpp

@@ -53,7 +53,7 @@ void FalkonSchemeHandler::requestStarted(QWebEngineUrlRequestJob *job)
     }
 
     QStringList knownPages;
-    knownPages << "about" << "start" << "speeddial" << "config" << "restore";
+    knownPages << QSL("about") << QSL("start") << QSL("speeddial") << QSL("config") << QSL("restore");
 
     if (knownPages.contains(job->requestUrl().path()))
         job->reply(QByteArrayLiteral("text/html"), new FalkonSchemeReply(job, job));
@@ -76,7 +76,7 @@ bool FalkonSchemeHandler::handleRequest(QWebEngineUrlRequestJob *job)
         job->redirect(QUrl(QSL("falkon:start")));
         return true;
     } else if (job->requestUrl().path() == QL1S("reportbug")) {
-        job->redirect(QUrl(Qz::BUGSADDRESS));
+        job->redirect(QUrl(QString::fromLatin1(Qz::BUGSADDRESS)));
         return true;
     }
 
@@ -149,14 +149,14 @@ QString FalkonSchemeReply::startPage()
         return sPage;
     }
 
-    sPage.append(QzTools::readAllFileContents(":html/start.html"));
+    sPage.append(QzTools::readAllFileContents(QSL(":html/start.html")));
     sPage.replace(QLatin1String("%ABOUT-IMG%"), QSL("qrc:icons/other/startpage.svg"));
     sPage.replace(QLatin1String("%ABOUT-IMG-DARK%"), QSL("qrc:icons/other/startpage-dark.svg"));
 
     sPage.replace(QLatin1String("%TITLE%"), tr("Start Page"));
     sPage.replace(QLatin1String("%BUTTON-LABEL%"), tr("Search on Web"));
     sPage.replace(QLatin1String("%SEARCH-BY%"), tr("Search results provided by DuckDuckGo"));
-    sPage.replace(QLatin1String("%WWW%"), Qz::WIKIADDRESS);
+    sPage.replace(QLatin1String("%WWW%"), QString::fromLatin1(Qz::WIKIADDRESS));
     sPage.replace(QLatin1String("%ABOUT-FALKON%"), tr("About Falkon"));
     sPage.replace(QLatin1String("%PRIVATE-BROWSING%"), mApp->isPrivate() ? tr("<h1>Private Browsing</h1>") : QString());
     sPage = QzTools::applyDirectionToPage(sPage);
@@ -169,10 +169,10 @@ QString FalkonSchemeReply::aboutPage()
     static QString aPage;
 
     if (aPage.isEmpty()) {
-        aPage.append(QzTools::readAllFileContents(":html/about.html"));
+        aPage.append(QzTools::readAllFileContents(QSL(":html/about.html")));
         aPage.replace(QLatin1String("%ABOUT-IMG%"), QSL("qrc:icons/other/about.svg"));
         aPage.replace(QLatin1String("%ABOUT-IMG-DARK%"), QSL("qrc:icons/other/about-dark.svg"));
-        aPage.replace(QLatin1String("%COPYRIGHT-INCLUDE%"), QzTools::readAllFileContents(":html/copyright").toHtmlEscaped());
+        aPage.replace(QLatin1String("%COPYRIGHT-INCLUDE%"), QzTools::readAllFileContents(QSL(":html/copyright")).toHtmlEscaped());
 
         aPage.replace(QLatin1String("%TITLE%"), tr("About Falkon"));
         aPage.replace(QLatin1String("%ABOUT-FALKON%"), tr("About Falkon"));
@@ -180,15 +180,15 @@ QString FalkonSchemeReply::aboutPage()
         aPage.replace(QLatin1String("%COPYRIGHT%"), tr("Copyright"));
 
         aPage.replace(QLatin1String("%VERSION-INFO%"),
-                      QString("<dt>%1</dt><dd>%2<dd>").arg(tr("Version"),
+                      QSL("<dt>%1</dt><dd>%2<dd>").arg(tr("Version"),
 #ifdef FALKON_GIT_REVISION
-                              QString("%1 (%2)").arg(Qz::VERSION, FALKON_GIT_REVISION)));
+                              QSL("%1 (%2)").arg(QString::fromLatin1(Qz::VERSION), QL1S(FALKON_GIT_REVISION))));
 #else
-                              Qz::VERSION));
+                              QString::fromLatin1(Qz::VERSION)));
 #endif
 
         aPage.replace(QLatin1String("%MAIN-DEVELOPER%"), tr("Main developer"));
-        aPage.replace(QLatin1String("%MAIN-DEVELOPER-TEXT%"), authorString(Qz::AUTHOR, "nowrep@gmail.com"));
+        aPage.replace(QLatin1String("%MAIN-DEVELOPER-TEXT%"), authorString(Qz::AUTHOR, QSL("nowrep@gmail.com")));
         aPage = QzTools::applyDirectionToPage(aPage);
     }
 
@@ -200,7 +200,7 @@ QString FalkonSchemeReply::speeddialPage()
     static QString dPage;
 
     if (dPage.isEmpty()) {
-        dPage.append(QzTools::readAllFileContents(":html/speeddial.html"));
+        dPage.append(QzTools::readAllFileContents(QSL(":html/speeddial.html")));
         dPage.replace(QLatin1String("%IMG_PLUS%"), QLatin1String("qrc:html/plus.svg"));
         dPage.replace(QLatin1String("%IMG_CLOSE%"), QLatin1String("qrc:html/close.svg"));
         dPage.replace(QLatin1String("%IMG_EDIT%"), QLatin1String("qrc:html/edit.svg"));
@@ -240,7 +240,7 @@ QString FalkonSchemeReply::speeddialPage()
     QString page = dPage;
     SpeedDial* dial = mApp->plugins()->speedDial();
 
-    page.replace(QLatin1String("%INITIAL-SCRIPT%"), dial->initialScript().toUtf8().toBase64());
+    page.replace(QLatin1String("%INITIAL-SCRIPT%"), QString::fromLatin1(dial->initialScript().toUtf8().toBase64()));
     page.replace(QLatin1String("%IMG_BACKGROUND%"), dial->backgroundImage());
     page.replace(QLatin1String("%URL_BACKGROUND%"), dial->backgroundImageUrl());
     page.replace(QLatin1String("%B_SIZE%"), dial->backgroundImageSize());
@@ -256,7 +256,7 @@ QString FalkonSchemeReply::restorePage()
     static QString rPage;
 
     if (rPage.isEmpty()) {
-        rPage.append(QzTools::readAllFileContents(":html/restore.html"));
+        rPage.append(QzTools::readAllFileContents(QSL(":html/restore.html")));
         rPage.replace(QLatin1String("%IMAGE%"), QzTools::pixmapToDataUrl(IconProvider::standardIcon(QStyle::SP_MessageBoxWarning).pixmap(45)).toString());
         rPage.replace(QLatin1String("%TITLE%"), tr("Restore Session"));
         rPage.replace(QLatin1String("%OOPS%"), tr("Oops, Falkon crashed."));
@@ -279,7 +279,7 @@ QString FalkonSchemeReply::configPage()
     static QString cPage;
 
     if (cPage.isEmpty()) {
-        cPage.append(QzTools::readAllFileContents(":html/config.html"));
+        cPage.append(QzTools::readAllFileContents(QSL(":html/config.html")));
         cPage.replace(QLatin1String("%ABOUT-IMG%"), QSL("qrc:icons/other/about.svg"));
         cPage.replace(QLatin1String("%ABOUT-IMG-DARK%"), QSL("qrc:icons/other/about-dark.svg"));
 
@@ -312,24 +312,24 @@ QString FalkonSchemeReply::configPage()
         };
 
         cPage.replace(QLatin1String("%VERSION-INFO%"),
-                      QString("<dt>%1</dt><dd>%2<dd>").arg(tr("Application version"),
+                      QSL("<dt>%1</dt><dd>%2<dd>").arg(tr("Application version"),
 #ifdef FALKON_GIT_REVISION
-                              QString("%1 (%2)").arg(Qz::VERSION, FALKON_GIT_REVISION)
+                              QSL("%1 (%2)").arg(QString::fromLatin1(Qz::VERSION), QL1S(FALKON_GIT_REVISION))
 #else
-                              Qz::VERSION
+                              QString::fromLatin1(Qz::VERSION)
 #endif
                                                           ) +
-                      QString("<dt>%1</dt><dd>%2<dd>").arg(tr("Qt version"), qVersion()) +
+                      QSL("<dt>%1</dt><dd>%2<dd>").arg(tr("Qt version"), QString::fromLatin1(qVersion())) +
-                      QString("<dt>%1</dt><dd>%2<dd>").arg(tr("QtWebEngine version"), QSL(QTWEBENGINECORE_VERSION_STR)) +
+                      QSL("<dt>%1</dt><dd>%2<dd>").arg(tr("QtWebEngine version"), QSL(QTWEBENGINECORE_VERSION_STR)) +
-                      QString("<dt>%1</dt><dd>%2<dd>").arg(tr("Platform"), QzTools::operatingSystemLong()));
+                      QSL("<dt>%1</dt><dd>%2<dd>").arg(tr("Platform"), QzTools::operatingSystemLong()));
 
         cPage.replace(QLatin1String("%PATHS-TEXT%"),
-                      QString("<dt>%1</dt><dd>%2<dd>").arg(tr("Profile"), DataPaths::currentProfilePath()) +
+                      QSL("<dt>%1</dt><dd>%2<dd>").arg(tr("Profile"), DataPaths::currentProfilePath()) +
-                      QString("<dt>%1</dt><dd>%2<dd>").arg(tr("Settings"), DataPaths::currentProfilePath() + "/settings.ini") +
+                      QSL("<dt>%1</dt><dd>%2<dd>").arg(tr("Settings"), DataPaths::currentProfilePath() + QSL("/settings.ini")) +
-                      QString("<dt>%1</dt><dd>%2<dd>").arg(tr("Saved session"), SessionManager::defaultSessionPath()) +
+                      QSL("<dt>%1</dt><dd>%2<dd>").arg(tr("Saved session"), SessionManager::defaultSessionPath()) +
-                      QString("<dt>%1</dt><dd>%2<dd>").arg(tr("Data"), allPaths(DataPaths::AppData)) +
+                      QSL("<dt>%1</dt><dd>%2<dd>").arg(tr("Data"), allPaths(DataPaths::AppData)) +
-                      QString("<dt>%1</dt><dd>%2<dd>").arg(tr("Themes"), allPaths(DataPaths::Themes)) +
+                      QSL("<dt>%1</dt><dd>%2<dd>").arg(tr("Themes"), allPaths(DataPaths::Themes)) +
-                      QString("<dt>%1</dt><dd>%2<dd>").arg(tr("Extensions"), allPaths(DataPaths::Plugins)));
+                      QSL("<dt>%1</dt><dd>%2<dd>").arg(tr("Extensions"), allPaths(DataPaths::Plugins)));
 
 #ifdef QT_DEBUG
         QString debugBuild = tr("<b>Enabled</b>");
@@ -348,11 +348,11 @@ QString FalkonSchemeReply::configPage()
         QString portableBuild = mApp->isPortable() ? tr("<b>Enabled</b>") : tr("Disabled");
 
         cPage.replace(QLatin1String("%BUILD-CONFIG-TEXT%"),
-                      QString("<dt>%1</dt><dd>%2<dd>").arg(tr("Debug build"), debugBuild) +
+                      QSL("<dt>%1</dt><dd>%2<dd>").arg(tr("Debug build"), debugBuild) +
 #ifdef Q_OS_WIN
-                      QString("<dt>%1</dt><dd>%2<dd>").arg(tr("Windows 7 API"), w7APIEnabled) +
+                      QSL("<dt>%1</dt><dd>%2<dd>").arg(tr("Windows 7 API"), w7APIEnabled) +
 #endif
-                      QString("<dt>%1</dt><dd>%2<dd>").arg(tr("Portable build"), portableBuild));
+                      QSL("<dt>%1</dt><dd>%2<dd>").arg(tr("Portable build"), portableBuild));
 
         cPage = QzTools::applyDirectionToPage(cPage);
     }
@@ -365,12 +365,12 @@ QString FalkonSchemeReply::configPage()
 
     for (const Plugins::Plugin &plugin : availablePlugins) {
         PluginSpec spec = plugin.pluginSpec;
-        pluginsString.append(QString("<tr><td>%1</td><td>%2</td><td>%3</td><td>%4</td></tr>").arg(
+        pluginsString.append(QSL("<tr><td>%1</td><td>%2</td><td>%3</td><td>%4</td></tr>").arg(
                                  spec.name, spec.version, spec.author.toHtmlEscaped(), spec.description));
     }
 
     if (pluginsString.isEmpty()) {
-        pluginsString = QString("<tr><td colspan=4 class=\"no-available-plugins\">%1</td></tr>").arg(tr("No available extensions."));
+        pluginsString = QSL("<tr><td colspan=4 class=\"no-available-plugins\">%1</td></tr>").arg(tr("No available extensions."));
     }
 
     page.replace(QLatin1String("%PLUGINS-INFO%"), pluginsString);
@@ -379,7 +379,7 @@ QString FalkonSchemeReply::configPage()
     QSettings* settings = Settings::globalSettings();
     const auto groups = settings->childGroups();
     for (const QString &group : groups) {
-        QString groupString = QString("<tr><th colspan=\"2\">[%1]</th></tr>").arg(group);
+        QString groupString = QSL("<tr><th colspan=\"2\">[%1]</th></tr>").arg(group);
         settings->beginGroup(group);
 
         const auto keys = settings->childKeys();
@@ -394,12 +394,12 @@ QString FalkonSchemeReply::configPage()
 
             case QVariant::Point: {
                 const QPoint point = keyValue.toPoint();
-                keyString = QString("QPoint(%1, %2)").arg(point.x()).arg(point.y());
+                keyString = QSL("QPoint(%1, %2)").arg(point.x()).arg(point.y());
                 break;
             }
 
             case QVariant::StringList:
-                keyString = keyValue.toStringList().join(",");
+                keyString = keyValue.toStringList().join(QSL(","));
                 break;
 
             default:
@@ -410,7 +410,7 @@ QString FalkonSchemeReply::configPage()
                 keyString = QLatin1String("\"empty\"");
             }
 
-            groupString.append(QString("<tr><td>%1</td><td>%2</td></tr>").arg(key, keyString.toHtmlEscaped()));
+            groupString.append(QSL("<tr><td>%1</td><td>%2</td></tr>").arg(key, keyString.toHtmlEscaped()));
         }
 
         settings->endGroup();

src/lib/notifications/desktopnotificationsfactory.cpp

@@ -40,15 +40,15 @@ DesktopNotificationsFactory::DesktopNotificationsFactory(QObject* parent)
 void DesktopNotificationsFactory::loadSettings()
 {
     Settings settings;
-    settings.beginGroup("Notifications");
+    settings.beginGroup(QSL("Notifications"));
-    m_enabled = settings.value("Enabled", true).toBool();
+    m_enabled = settings.value(QSL("Enabled"), true).toBool();
-    m_timeout = settings.value("Timeout", 6000).toInt();
+    m_timeout = settings.value(QSL("Timeout"), 6000).toInt();
 #if defined(Q_OS_UNIX) && !defined(DISABLE_DBUS)
-    m_notifType = settings.value("UseNativeDesktop", true).toBool() ? DesktopNative : PopupWidget;
+    m_notifType = settings.value(QSL("UseNativeDesktop"), true).toBool() ? DesktopNative : PopupWidget;
 #else
     m_notifType = PopupWidget;
 #endif
-    m_position = settings.value("Position", QPoint(10, 10)).toPoint();
+    m_position = settings.value(QSL("Position"), QPoint(10, 10)).toPoint();
     settings.endGroup();
 }
 
@@ -94,7 +94,7 @@ void DesktopNotificationsFactory::showNotification(const QPixmap &icon, const QS
             {QStringLiteral("desktop-entry"), QGuiApplication::desktopFileName()}
         };
 
-        QDBusInterface dbus("org.freedesktop.Notifications", "/org/freedesktop/Notifications", "org.freedesktop.Notifications", QDBusConnection::sessionBus());
+        QDBusInterface dbus(QSL("org.freedesktop.Notifications"), QSL("/org/freedesktop/Notifications"), QSL("org.freedesktop.Notifications"), QDBusConnection::sessionBus());
         QVariantList args;
         args.append(QLatin1String("Falkon"));
         args.append(m_uint);
@@ -104,7 +104,7 @@ void DesktopNotificationsFactory::showNotification(const QPixmap &icon, const QS
         args.append(QStringList());
         args.append(hints);
         args.append(m_timeout);
-        dbus.callWithCallback("Notify", args, this, SLOT(updateLastId(QDBusMessage)), SLOT(error(QDBusError)));
+        dbus.callWithCallback(QSL("Notify"), args, this, SLOT(updateLastId(QDBusMessage)), SLOT(error(QDBusError)));
 #endif
         break;
     }

src/lib/opensearch/opensearchengine.cpp

@@ -245,7 +245,7 @@ QByteArray OpenSearchEngine::getPostData(const QString &searchTerm) const
         return {};
     }
 
-    QUrl retVal = QUrl("http://foo.bar");
+    QUrl retVal = QUrl(QSL("http://foo.bar"));
 
     QUrlQuery query(retVal);
     Parameters::const_iterator end = m_searchParameters.constEnd();
@@ -530,7 +530,7 @@ void OpenSearchEngine::setSuggestionsUrl(const QString &string)
 
 QString OpenSearchEngine::getSuggestionsUrl()
 {
-    return suggestionsUrl("searchstring").toString().replace(QLatin1String("searchstring"), QLatin1String("%s"));
+    return suggestionsUrl(QSL("searchstring")).toString().replace(QLatin1String("searchstring"), QLatin1String("%s"));
 }
 
 QByteArray OpenSearchEngine::getSuggestionsParameters()

src/lib/opensearch/opensearchreader.cpp

@@ -97,7 +97,7 @@ OpenSearchEngine* OpenSearchReader::read(QIODevice* device)
 OpenSearchEngine* OpenSearchReader::read()
 {
     auto* engine = new OpenSearchEngine();
-    m_searchXml = device()->peek(1024 * 5);
+    m_searchXml = QString::fromLatin1(device()->peek(1024 * 5));
 
     if (!m_searchXml.contains(QLatin1String("http://a9.com/-/spec/opensearch/1.1/")) &&
         !m_searchXml.contains(QLatin1String("http://www.mozilla.org/2006/browser/search/"))

src/lib/opensearch/searchenginesdialog.cpp

@@ -108,7 +108,7 @@ void SearchEnginesDialog::editEngine()
 
     dialog.setName(engine.name);
     dialog.setUrl(engine.url);
-    dialog.setPostData(engine.postData);
+    dialog.setPostData(QString::fromUtf8(engine.postData));
     dialog.setShortcut(engine.shortcut);
     dialog.setIcon(engine.icon);
 

src/lib/opensearch/searchenginesmanager.cpp

@@ -69,9 +69,9 @@ SearchEnginesManager::SearchEnginesManager(QObject* parent)
     , m_saveScheduled(false)
 {
     Settings settings;
-    settings.beginGroup("SearchEngines");
+    settings.beginGroup(QSL("SearchEngines"));
-    m_startingEngineName = settings.value("activeEngine", "DuckDuckGo").toString();
+    m_startingEngineName = settings.value(QSL("activeEngine"), QSL("DuckDuckGo")).toString();
-    m_defaultEngineName = settings.value("DefaultEngine", "DuckDuckGo").toString();
+    m_defaultEngineName = settings.value(QSL("DefaultEngine"), QSL("DuckDuckGo")).toString();
     settings.endGroup();
 
     connect(this, &SearchEnginesManager::enginesChanged, this, &SearchEnginesManager::scheduleSave);
@@ -82,7 +82,7 @@ void SearchEnginesManager::loadSettings()
     m_settingsLoaded = true;
 
     QSqlQuery query(SqlDatabase::instance()->database());
-    query.exec("SELECT name, icon, url, shortcut, suggestionsUrl, suggestionsParameters, postData FROM search_engines");
+    query.exec(QSL("SELECT name, icon, url, shortcut, suggestionsUrl, suggestionsParameters, postData FROM search_engines"));
 
     while (query.next()) {
         Engine en;
@@ -158,33 +158,33 @@ LoadRequest SearchEnginesManager::searchResult(const QString &string)
 void SearchEnginesManager::restoreDefaults()
 {
     Engine duck;
-    duck.name = "DuckDuckGo";
+    duck.name = QSL("DuckDuckGo");
-    duck.icon = QIcon(":/icons/sites/duck.png");
+    duck.icon = QIcon(QSL(":/icons/sites/duck.png"));
-    duck.url = "https://duckduckgo.com/?q=%s&t=qupzilla";
+    duck.url = QSL("https://duckduckgo.com/?q=%s&t=qupzilla");
-    duck.shortcut = "d";
+    duck.shortcut = QSL("d");
-    duck.suggestionsUrl = "https://ac.duckduckgo.com/ac/?q=%s&type=list";
+    duck.suggestionsUrl = QSL("https://ac.duckduckgo.com/ac/?q=%s&type=list");
 
     Engine sp;
-    sp.name = "StartPage";
+    sp.name = QSL("StartPage");
-    sp.icon = QIcon(":/icons/sites/startpage.png");
+    sp.icon = QIcon(QSL(":/icons/sites/startpage.png"));
-    sp.url = "https://startpage.com/do/search";
+    sp.url = QSL("https://startpage.com/do/search");
     sp.postData = "query=%s&cat=web&language=english";
-    sp.shortcut = "sp";
+    sp.shortcut = QSL("sp");
-    sp.suggestionsUrl = "https://startpage.com/cgi-bin/csuggest?output=json&lang=english&query=%s";
+    sp.suggestionsUrl = QSL("https://startpage.com/cgi-bin/csuggest?output=json&lang=english&query=%s");
 
     Engine wiki;
-    wiki.name = "Wikipedia (en)";
+    wiki.name = QSL("Wikipedia (en)");
-    wiki.icon = QIcon(":/icons/sites/wikipedia.png");
+    wiki.icon = QIcon(QSL(":/icons/sites/wikipedia.png"));
-    wiki.url = "https://en.wikipedia.org/wiki/Special:Search?search=%s&fulltext=Search";
+    wiki.url = QSL("https://en.wikipedia.org/wiki/Special:Search?search=%s&fulltext=Search");
-    wiki.shortcut = "w";
+    wiki.shortcut = QSL("w");
-    wiki.suggestionsUrl = "https://en.wikipedia.org/w/api.php?action=opensearch&search=%s&namespace=0";
+    wiki.suggestionsUrl = QSL("https://en.wikipedia.org/w/api.php?action=opensearch&search=%s&namespace=0");
 
     Engine google;
-    google.name = "Google";
+    google.name = QSL("Google");
-    google.icon = QIcon(":icons/sites/google.png");
+    google.icon = QIcon(QSL(":icons/sites/google.png"));
-    google.url = "https://www.google.com/search?client=falkon&q=%s";
+    google.url = QSL("https://www.google.com/search?client=falkon&q=%s");
-    google.shortcut = "g";
+    google.shortcut = QSL("g");
-    google.suggestionsUrl = "https://suggestqueries.google.com/complete/search?output=firefox&q=%s";
+    google.suggestionsUrl = QSL("https://suggestqueries.google.com/complete/search?output=firefox&q=%s");
 
     addEngine(duck);
     addEngine(sp);
@@ -218,7 +218,7 @@ void SearchEnginesManager::engineChangedImage()
 
     for (Engine e : qAsConst(m_allEngines)) {
         if (e.name == engine->name() &&
-            e.url.contains(engine->searchUrl("%s").toString()) &&
+            e.url.contains(engine->searchUrl(QSL("%s")).toString()) &&
             !engine->image().isNull()
            ) {
             int index = m_allEngines.indexOf(e);
@@ -270,7 +270,7 @@ void SearchEnginesManager::addEngineFromForm(const QVariantMap &formData, WebVie
     QUrl parameterUrl = actionUrl;
 
     if (isPost) {
-        parameterUrl = QUrl("http://foo.bar");
+        parameterUrl = QUrl(QSL("http://foo.bar"));
     }
 
     const QString &inputName = formData.value(QSL("inputName")).toString();
@@ -302,7 +302,7 @@ void SearchEnginesManager::addEngineFromForm(const QVariantMap &formData, WebVie
     SearchEngine engine;
     engine.name = view->title();
     engine.icon = view->icon();
-    engine.url = actionUrl.toEncoded();
+    engine.url = QString::fromUtf8(actionUrl.toEncoded());
 
     if (isPost) {
         QByteArray data = parameterUrl.toEncoded(QUrl::RemoveScheme);
@@ -316,7 +316,7 @@ void SearchEnginesManager::addEngineFromForm(const QVariantMap &formData, WebVie
     dialog.setName(engine.name);
     dialog.setIcon(engine.icon);
     dialog.setUrl(engine.url);
-    dialog.setPostData(engine.postData);
+    dialog.setPostData(QString::fromUtf8(engine.postData));
 
     if (dialog.exec() != QDialog::Accepted) {
         return;
@@ -341,7 +341,7 @@ void SearchEnginesManager::addEngine(OpenSearchEngine* engine)
 
     Engine en;
     en.name = engine->name();
-    en.url = engine->searchUrl("searchstring").toString().replace(QLatin1String("searchstring"), QLatin1String("%s"));
+    en.url = engine->searchUrl(QSL("searchstring")).toString().replace(QLatin1String("searchstring"), QLatin1String("%s"));
 
     if (engine->image().isNull()) {
         en.icon = iconForSearchEngine(engine->searchUrl(QString()));
@@ -352,7 +352,7 @@ void SearchEnginesManager::addEngine(OpenSearchEngine* engine)
 
     en.suggestionsUrl = engine->getSuggestionsUrl();
     en.suggestionsParameters = engine->getSuggestionsParameters();
-    en.postData = engine->getPostData("searchstring").replace("searchstring", "%s");
+    en.postData = engine->getPostData(QSL("searchstring")).replace("searchstring", "%s");
 
     addEngine(en);
 
@@ -449,7 +449,7 @@ void SearchEnginesManager::removeEngine(const Engine &engine)
     }
 
     QSqlQuery query(SqlDatabase::instance()->database());
-    query.prepare("DELETE FROM search_engines WHERE name=? AND url=?");
+    query.prepare(QSL("DELETE FROM search_engines WHERE name=? AND url=?"));
     query.bindValue(0, engine.name);
     query.bindValue(1, engine.url);
     query.exec();
@@ -476,9 +476,9 @@ QVector<SearchEngine> SearchEnginesManager::allEngines()
 void SearchEnginesManager::saveSettings()
 {
     Settings settings;
-    settings.beginGroup("SearchEngines");
+    settings.beginGroup(QSL("SearchEngines"));
-    settings.setValue("activeEngine", m_activeEngine.name);
+    settings.setValue(QSL("activeEngine"), m_activeEngine.name);
-    settings.setValue("DefaultEngine", m_defaultEngine.name);
+    settings.setValue(QSL("DefaultEngine"), m_defaultEngine.name);
     settings.endGroup();
 
     if (!m_saveScheduled) {
@@ -493,10 +493,10 @@ void SearchEnginesManager::saveSettings()
     // But as long as user is not playing with search engines every run it is acceptable.
 
     QSqlQuery query(SqlDatabase::instance()->database());
-    query.exec("DELETE FROM search_engines");
+    query.exec(QSL("DELETE FROM search_engines"));
 
     for (const Engine &en : qAsConst(m_allEngines)) {
-        query.prepare("INSERT INTO search_engines (name, icon, url, shortcut, suggestionsUrl, suggestionsParameters, postData) VALUES (?, ?, ?, ?, ?, ?, ?)");
+        query.prepare(QSL("INSERT INTO search_engines (name, icon, url, shortcut, suggestionsUrl, suggestionsParameters, postData) VALUES (?, ?, ?, ?, ?, ?, ?)"));
         query.addBindValue(en.name);
         query.addBindValue(iconToBase64(en.icon));
         query.addBindValue(en.url);

src/lib/other/aboutdialog.cpp

@@ -47,17 +47,17 @@ AboutDialog::~AboutDialog()
 void AboutDialog::showAbout()
 {
     QString aboutHtml;
-    aboutHtml += "<div style='margin:0px 20px;'>";
+    aboutHtml += QSL("<div style='margin:0px 20px;'>");
     aboutHtml += tr("<p><b>Application version %1</b><br/>").arg(
 #ifdef FALKON_GIT_REVISION
-                       QString("%1 (%2)").arg(Qz::VERSION, FALKON_GIT_REVISION)
+                       QString(QSL("%1 (%2)")).arg(QString::fromLatin1(Qz::VERSION), QL1S(FALKON_GIT_REVISION))
 #else
-                       Qz::VERSION
+                       QString::fromLatin1(Qz::VERSION)
 #endif
                    );
     aboutHtml += tr("<b>QtWebEngine version %1</b></p>").arg(QStringLiteral(QTWEBENGINECORE_VERSION_STR));
-    aboutHtml += QStringLiteral("<p>&copy; %1 %2<br/>").arg(Qz::COPYRIGHT, Qz::AUTHOR);
+    aboutHtml += QStringLiteral("<p>&copy; %1 %2<br/>").arg(QString::fromLatin1(Qz::COPYRIGHT), QString::fromLatin1(Qz::AUTHOR));
-    aboutHtml += QStringLiteral("<a href=%1>%1</a></p>").arg(Qz::WWWADDRESS);
+    aboutHtml += QStringLiteral("<a href=%1>%1</a></p>").arg(QString::fromLatin1(Qz::WWWADDRESS));
     aboutHtml += QStringLiteral("<p>") + mApp->userAgentManager()->defaultUserAgent() + QStringLiteral("</p>");
     aboutHtml += QStringLiteral("</div>");
     ui->textLabel->setText(aboutHtml);

src/lib/other/browsinglibrary.cpp

@@ -37,9 +37,9 @@ BrowsingLibrary::BrowsingLibrary(BrowserWindow* window, QWidget* parent)
     ui->setupUi(this);
 
     Settings settings;
-    settings.beginGroup("BrowsingLibrary");
+    settings.beginGroup(QSL("BrowsingLibrary"));
-    resize(settings.value("size", QSize(760, 470)).toSize());
+    resize(settings.value(QSL("size"), QSize(760, 470)).toSize());
-    m_historyManager->restoreState(settings.value("historyState", QByteArray()).toByteArray());
+    m_historyManager->restoreState(settings.value(QSL("historyState"), QByteArray()).toByteArray());
     settings.endGroup();
 
     QzTools::centerWidgetOnScreen(this);
@@ -65,7 +65,7 @@ BrowsingLibrary::BrowsingLibrary(BrowserWindow* window, QWidget* parent)
     connect(ui->tabs, &FancyTabWidget::CurrentChanged, ui->searchLine, &QLineEdit::clear);
     connect(ui->searchLine, &QLineEdit::textChanged, this, &BrowsingLibrary::search);
 
-    QzTools::setWmClass("Browsing Library", this);
+    QzTools::setWmClass(QSL("Browsing Library"), this);
 }
 
 void BrowsingLibrary::search()
@@ -113,9 +113,9 @@ void BrowsingLibrary::showBookmarks(BrowserWindow* window)
 void BrowsingLibrary::closeEvent(QCloseEvent* e)
 {
     Settings settings;
-    settings.beginGroup("BrowsingLibrary");
+    settings.beginGroup(QSL("BrowsingLibrary"));
-    settings.setValue("size", size());
+    settings.setValue(QSL("size"), size());
-    settings.setValue("historyState", m_historyManager->saveState());
+    settings.setValue(QSL("historyState"), m_historyManager->saveState());
     settings.endGroup();
     e->accept();
 }

src/lib/other/clearprivatedata.cpp

@@ -54,8 +54,8 @@ ClearPrivateData::ClearPrivateData(QWidget* parent)
     connect(ui->editCookies, &QAbstractButton::clicked, this, &ClearPrivateData::showCookieManager);
 
     Settings settings;
-    settings.beginGroup("ClearPrivateData");
+    settings.beginGroup(QSL("ClearPrivateData"));
-    restoreState(settings.value("state", QByteArray()).toByteArray());
+    restoreState(settings.value(QSL("state"), QByteArray()).toByteArray());
     settings.endGroup();
 }
 
@@ -91,8 +91,8 @@ void ClearPrivateData::clearCache()
 void ClearPrivateData::closeEvent(QCloseEvent* e)
 {
     Settings settings;
-    settings.beginGroup("ClearPrivateData");
+    settings.beginGroup(QSL("ClearPrivateData"));
-    settings.setValue("state", saveState());
+    settings.setValue(QSL("state"), saveState());
     settings.endGroup();
 
     e->accept();

src/lib/other/iconchooser.cpp

@@ -38,8 +38,8 @@ IconChooser::IconChooser(QWidget* parent)
 
 void IconChooser::chooseFile()
 {
-    const QString fileTypes = QString("%3(*.png *.jpg *.jpeg *.gif)").arg(tr("Image files"));
+    const QString fileTypes = QSL("%3(*.png *.jpg *.jpeg *.gif)").arg(tr("Image files"));
-    const QString path = QzTools::getOpenFileName("IconChooser-ChangeIcon", this, tr("Choose icon..."), QDir::homePath(), fileTypes);
+    const QString path = QzTools::getOpenFileName(QSL("IconChooser-ChangeIcon"), this, tr("Choose icon..."), QDir::homePath(), fileTypes);
 
     if (path.isEmpty()) {
         return;

src/lib/other/licenseviewer.cpp

@@ -32,7 +32,7 @@ LicenseViewer::LicenseViewer(QWidget* parent)
     m_textBrowser = new QTextBrowser(this);
 
     QFont serifFont = m_textBrowser->font();
-    serifFont.setFamily("Courier");
+    serifFont.setFamily(QSL("Courier"));
     m_textBrowser->setFont(serifFont);
 
     auto* buttonBox = new QDialogButtonBox(this);

src/lib/other/qzsettings.cpp

@@ -26,52 +26,52 @@ QzSettings::QzSettings()
 void QzSettings::loadSettings()
 {
     Settings settings;
-    settings.beginGroup("AddressBar");
+    settings.beginGroup(QSL("AddressBar"));
-    selectAllOnDoubleClick = settings.value("SelectAllTextOnDoubleClick", true).toBool();
+    selectAllOnDoubleClick = settings.value(QSL("SelectAllTextOnDoubleClick"), true).toBool();
-    selectAllOnClick = settings.value("SelectAllTextOnClick", false).toBool();
+    selectAllOnClick = settings.value(QSL("SelectAllTextOnClick"), false).toBool();
-    showLoadingProgress = settings.value("ShowLoadingProgress", false).toBool();
+    showLoadingProgress = settings.value(QSL("ShowLoadingProgress"), false).toBool();
-    showLocationSuggestions = settings.value("showSuggestions", 0).toInt();
+    showLocationSuggestions = settings.value(QSL("showSuggestions"), 0).toInt();
-    showSwitchTab = settings.value("showSwitchTab", true).toBool();
+    showSwitchTab = settings.value(QSL("showSwitchTab"), true).toBool();
-    alwaysShowGoIcon = settings.value("alwaysShowGoIcon", false).toBool();
+    alwaysShowGoIcon = settings.value(QSL("alwaysShowGoIcon"), false).toBool();
-    useInlineCompletion = settings.value("useInlineCompletion", true).toBool();
+    useInlineCompletion = settings.value(QSL("useInlineCompletion"), true).toBool();
-    showZoomLabel = settings.value("showZoomLabel", true).toBool();
+    showZoomLabel = settings.value(QSL("showZoomLabel"), true).toBool();
-    completionPopupExpandToWindow = settings.value("CompletionPopupExpandToWindow", false).toBool();
+    completionPopupExpandToWindow = settings.value(QSL("CompletionPopupExpandToWindow"), false).toBool();
     settings.endGroup();
 
-    settings.beginGroup("SearchEngines");
+    settings.beginGroup(QSL("SearchEngines"));
-    searchOnEngineChange = settings.value("SearchOnEngineChange", true).toBool();
+    searchOnEngineChange = settings.value(QSL("SearchOnEngineChange"), true).toBool();
-    searchFromAddressBar = settings.value("SearchFromAddressBar", true).toBool();
+    searchFromAddressBar = settings.value(QSL("SearchFromAddressBar"), true).toBool();
-    searchWithDefaultEngine = settings.value("SearchWithDefaultEngine", true).toBool();
+    searchWithDefaultEngine = settings.value(QSL("SearchWithDefaultEngine"), true).toBool();
-    showABSearchSuggestions = settings.value("showSearchSuggestions", true).toBool();
+    showABSearchSuggestions = settings.value(QSL("showSearchSuggestions"), true).toBool();
-    showWSBSearchSuggestions = settings.value("showSuggestions", true).toBool();
+    showWSBSearchSuggestions = settings.value(QSL("showSuggestions"), true).toBool();
     settings.endGroup();
 
-    settings.beginGroup("Web-Browser-Settings");
+    settings.beginGroup(QSL("Web-Browser-Settings"));
-    defaultZoomLevel = settings.value("DefaultZoomLevel", WebView::zoomLevels().indexOf(100)).toInt();
+    defaultZoomLevel = settings.value(QSL("DefaultZoomLevel"), WebView::zoomLevels().indexOf(100)).toInt();
-    loadTabsOnActivation = settings.value("LoadTabsOnActivation", true).toBool();
+    loadTabsOnActivation = settings.value(QSL("LoadTabsOnActivation"), true).toBool();
-    autoOpenProtocols = settings.value("AutomaticallyOpenProtocols", QStringList()).toStringList();
+    autoOpenProtocols = settings.value(QSL("AutomaticallyOpenProtocols"), QStringList()).toStringList();
-    blockedProtocols = settings.value("BlockOpeningProtocols", QStringList()).toStringList();
+    blockedProtocols = settings.value(QSL("BlockOpeningProtocols"), QStringList()).toStringList();
-    allowedSchemes = settings.value("AllowedSchemes", QStringList()).toStringList();
+    allowedSchemes = settings.value(QSL("AllowedSchemes"), QStringList()).toStringList();
-    blockedSchemes = settings.value("BlockedSchemes", QStringList()).toStringList();
+    blockedSchemes = settings.value(QSL("BlockedSchemes"), QStringList()).toStringList();
     settings.endGroup();
 
-    settings.beginGroup("Browser-Tabs-Settings");
+    settings.beginGroup(QSL("Browser-Tabs-Settings"));
-    newTabPosition = settings.value("OpenNewTabsSelected", false).toBool() ? Qz::NT_CleanSelectedTab : Qz::NT_CleanNotSelectedTab;
+    newTabPosition = settings.value(QSL("OpenNewTabsSelected"), false).toBool() ? Qz::NT_CleanSelectedTab : Qz::NT_CleanNotSelectedTab;
-    tabsOnTop = settings.value("TabsOnTop", true).toBool();
+    tabsOnTop = settings.value(QSL("TabsOnTop"), true).toBool();
-    openPopupsInTabs = settings.value("OpenPopupsInTabs", false).toBool();
+    openPopupsInTabs = settings.value(QSL("OpenPopupsInTabs"), false).toBool();
-    alwaysSwitchTabsWithWheel = settings.value("AlwaysSwitchTabsWithWheel", false).toBool();
+    alwaysSwitchTabsWithWheel = settings.value(QSL("AlwaysSwitchTabsWithWheel"), false).toBool();
     settings.endGroup();
 }
 
 void QzSettings::saveSettings()
 {
     Settings settings;
-    settings.beginGroup("Web-Browser-Settings");
+    settings.beginGroup(QSL("Web-Browser-Settings"));
-    settings.setValue("AutomaticallyOpenProtocols", autoOpenProtocols);
+    settings.setValue(QSL("AutomaticallyOpenProtocols"), autoOpenProtocols);
-    settings.setValue("BlockOpeningProtocols", blockedProtocols);
+    settings.setValue(QSL("BlockOpeningProtocols"), blockedProtocols);
     settings.endGroup();
 
-    settings.beginGroup("Browser-Tabs-Settings");
+    settings.beginGroup(QSL("Browser-Tabs-Settings"));
-    settings.setValue("TabsOnTop", tabsOnTop);
+    settings.setValue(QSL("TabsOnTop"), tabsOnTop);
     settings.endGroup();
 }

src/lib/other/registerqappassociation.cpp

@@ -79,16 +79,16 @@ void RegisterQAppAssociation::setAppInfo(const QString &appRegisteredName, const
 
 bool RegisterQAppAssociation::isPerMachineRegisteration()
 {
-    return (_UserRootKey == "HKEY_LOCAL_MACHINE");
+    return (_UserRootKey == QSL("HKEY_LOCAL_MACHINE"));
 }
 
 void RegisterQAppAssociation::setPerMachineRegisteration(bool enable)
 {
     if (enable) {
-        _UserRootKey = "HKEY_LOCAL_MACHINE";
+        _UserRootKey = QSL("HKEY_LOCAL_MACHINE");
     }
     else {
-        _UserRootKey = "HKEY_CURRENT_USER";
+        _UserRootKey = QSL("HKEY_CURRENT_USER");
     }
 }
 
@@ -98,13 +98,13 @@ bool RegisterQAppAssociation::registerAppCapabilities()
         return true;
     }
     // Vista and newer
-    QSettings regLocalMachine("HKEY_LOCAL_MACHINE", QSettings::NativeFormat);
+    QSettings regLocalMachine(QSL("HKEY_LOCAL_MACHINE"), QSettings::NativeFormat);
-    QString capabilitiesKey = regLocalMachine.value("Software/RegisteredApplications/" + _appRegisteredName).toString();
+    QString capabilitiesKey = regLocalMachine.value(QSL("Software/RegisteredApplications/") + _appRegisteredName).toString();
 
     if (capabilitiesKey.isEmpty()) {
-        regLocalMachine.setValue("Software/RegisteredApplications/" + _appRegisteredName,
+        regLocalMachine.setValue(QSL("Software/RegisteredApplications/") + _appRegisteredName,
-                                 QString("Software\\" + _appRegisteredName + "\\Capabilities"));
+                                 QString(QSL("Software\\") + _appRegisteredName + QSL("\\Capabilities")));
-        capabilitiesKey = regLocalMachine.value("Software/RegisteredApplications/" + _appRegisteredName).toString();
+        capabilitiesKey = regLocalMachine.value(QSL("Software/RegisteredApplications/") + _appRegisteredName).toString();
 
         if (capabilitiesKey.isEmpty()) {
             QMessageBox::warning(mApp->getWindow(), tr("Warning!"),
@@ -114,7 +114,7 @@ bool RegisterQAppAssociation::registerAppCapabilities()
         }
     }
 
-    capabilitiesKey.replace("\\", "/");
+    capabilitiesKey.replace(QSL("\\"), QSL("/"));
 
     QHash<QString, QPair<QString, QString> >::const_iterator it = _assocDescHash.constBegin();
     while (it != _assocDescHash.constEnd()) {
@@ -122,22 +122,22 @@ bool RegisterQAppAssociation::registerAppCapabilities()
         ++it;
     }
 
-    regLocalMachine.setValue(capabilitiesKey + "/ApplicationDescription", _appDesc);
+    regLocalMachine.setValue(capabilitiesKey + QSL("/ApplicationDescription"), _appDesc);
-    regLocalMachine.setValue(capabilitiesKey + "/ApplicationIcon", _appIcon);
+    regLocalMachine.setValue(capabilitiesKey + QSL("/ApplicationIcon"), _appIcon);
-    regLocalMachine.setValue(capabilitiesKey + "/ApplicationName", _appRegisteredName);
+    regLocalMachine.setValue(capabilitiesKey + QSL("/ApplicationName"), _appRegisteredName);
 
     QHash<QString, QString>::const_iterator i = _fileAssocHash.constBegin();
     while (i != _fileAssocHash.constEnd()) {
-        regLocalMachine.setValue(capabilitiesKey + "/FileAssociations/" + i.key(), i.value());
+        regLocalMachine.setValue(capabilitiesKey + QSL("/FileAssociations/") + i.key(), i.value());
         ++i;
     }
 
     i = _urlAssocHash.constBegin();
     while (i != _urlAssocHash.constEnd()) {
-        regLocalMachine.setValue(capabilitiesKey + "/URLAssociations/" + i.key(), i.value());
+        regLocalMachine.setValue(capabilitiesKey + QSL("/URLAssociations/") + i.key(), i.value());
         ++i;
     }
-    regLocalMachine.setValue(capabilitiesKey + "/Startmenu/StartMenuInternet", _appPath);
+    regLocalMachine.setValue(capabilitiesKey + QSL("/Startmenu/StartMenuInternet"), _appPath);
 
     return true;
 }
@@ -173,10 +173,10 @@ void RegisterQAppAssociation::registerAssociation(const QString &assocName, Asso
                                            AT_FILEEXTENSION);
                 break;
             case UrlAssociation: {
-                QSettings regCurrentUserRoot("HKEY_CURRENT_USER", QSettings::NativeFormat);
+                QSettings regCurrentUserRoot(QSL("HKEY_CURRENT_USER"), QSettings::NativeFormat);
                 QString currentUrlDefault =
-                    regCurrentUserRoot.value("Software/Microsoft/Windows/Shell/Associations/UrlAssociations/"
+                    regCurrentUserRoot.value(QSL("Software/Microsoft/Windows/Shell/Associations/UrlAssociations/")
-                                             + assocName + "/UserChoice/Progid").toString();
+                                             + assocName + QSL("/UserChoice/Progid")).toString();
                 hr = pAAR->SetAppAsDefault(_appRegisteredName.toStdWString().c_str(),
                                            assocName.toStdWString().c_str(),
                                            AT_URLPROTOCOL);
@@ -184,9 +184,9 @@ void RegisterQAppAssociation::registerAssociation(const QString &assocName, Asso
                     !currentUrlDefault.isEmpty() &&
                     currentUrlDefault != _urlAssocHash.value(assocName)
                    ) {
-                    regCurrentUserRoot.setValue("Software/Classes"
+                    regCurrentUserRoot.setValue(QSL("Software/Classes")
                                                 + assocName
-                                                + "/shell/open/command/backup_progid", currentUrlDefault);
+                                                + QSL("/shell/open/command/backup_progid"), currentUrlDefault);
                 }
             }
             break;
@@ -201,36 +201,36 @@ void RegisterQAppAssociation::registerAssociation(const QString &assocName, Asso
     }
     else { // Older than Vista
         QSettings regUserRoot(_UserRootKey, QSettings::NativeFormat);
-        regUserRoot.beginGroup("Software/Classes");
+        regUserRoot.beginGroup(QSL("Software/Classes"));
-        QSettings regClassesRoot("HKEY_CLASSES_ROOT", QSettings::NativeFormat);
+        QSettings regClassesRoot(QSL("HKEY_CLASSES_ROOT"), QSettings::NativeFormat);
         switch (type) {
         case FileAssociation: {
             QString progId = _fileAssocHash.value(assocName);
             createProgId(progId);
-            QString currentDefault = regClassesRoot.value(assocName + "/Default").toString();
+            QString currentDefault = regClassesRoot.value(assocName + QSL("/Default")).toString();
             if (!currentDefault.isEmpty() &&
                 currentDefault != progId &&
-                regUserRoot.value(assocName + "/backup_val").toString() != progId
+                regUserRoot.value(assocName + QSL("/backup_val")).toString() != progId
                ) {
-                regUserRoot.setValue(assocName + "/backup_val", currentDefault);
+                regUserRoot.setValue(assocName + QSL("/backup_val"), currentDefault);
             }
-            regUserRoot.setValue(assocName + "/.", progId);
+            regUserRoot.setValue(assocName + QSL("/."), progId);
         }
         break;
         case UrlAssociation: {
             QString progId = _urlAssocHash.value(assocName);
             createProgId(progId);
-            QString currentDefault = regClassesRoot.value(assocName + "/shell/open/command/Default").toString();
+            QString currentDefault = regClassesRoot.value(assocName + QSL("/shell/open/command/Default")).toString();
-            QString command = "\"" + _appPath + "\" \"%1\"";
+            QString command = QSL("\"") + _appPath + QSL("\" \"%1\"");
             if (!currentDefault.isEmpty() &&
                 currentDefault != command &&
-                regUserRoot.value(assocName + "/shell/open/command/backup_val").toString() != command
+                regUserRoot.value(assocName + QSL("/shell/open/command/backup_val")).toString() != command
                ) {
-                regUserRoot.setValue(assocName + "/shell/open/command/backup_val", currentDefault);
+                regUserRoot.setValue(assocName + QSL("/shell/open/command/backup_val"), currentDefault);
             }
 
-            regUserRoot.setValue(assocName + "/shell/open/command/.", command);
+            regUserRoot.setValue(assocName + QSL("/shell/open/command/."), command);
-            regUserRoot.setValue(assocName + "/URL Protocol", "");
+            regUserRoot.setValue(assocName + QSL("/URL Protocol"), QSL(""));
             break;
         }
         default:
@@ -325,25 +325,25 @@ bool RegisterQAppAssociation::showNativeDefaultAppSettingsUi()
 void RegisterQAppAssociation::createProgId(const QString &progId)
 {
     QSettings regUserRoot(_UserRootKey, QSettings::NativeFormat);
-    regUserRoot.beginGroup("Software/Classes");
+    regUserRoot.beginGroup(QSL("Software/Classes"));
     QPair<QString, QString> pair = _assocDescHash.value(progId);
-    regUserRoot.setValue(progId + "/.", pair.first);
+    regUserRoot.setValue(progId + QSL("/."), pair.first);
-    regUserRoot.setValue(progId + "/shell/.", "open");
+    regUserRoot.setValue(progId + QSL("/shell/."), QSL("open"));
-    regUserRoot.setValue(progId + "/DefaultIcon/.", pair.second);
+    regUserRoot.setValue(progId + QSL("/DefaultIcon/."), pair.second);
-    regUserRoot.setValue(progId + "/shell/open/command/.", QString("\"" + _appPath + "\" \"%1\""));
+    regUserRoot.setValue(progId + QSL("/shell/open/command/."), QString(QSL("\"") + _appPath + QSL("\" \"%1\"")));
     regUserRoot.endGroup();
 }
 
 bool RegisterQAppAssociation::isDefaultApp(const QString &assocName, AssociationType type)
 {
     if (isVistaOrNewer()) {
-        QSettings regCurrentUserRoot("HKEY_CURRENT_USER", QSettings::NativeFormat);
+        QSettings regCurrentUserRoot(QSL("HKEY_CURRENT_USER"), QSettings::NativeFormat);
         switch (type) {
         case FileAssociation: {
-            regCurrentUserRoot.beginGroup("Software/Microsoft/Windows/CurrentVersion/Explorer/FileExts");
+            regCurrentUserRoot.beginGroup(QSL("Software/Microsoft/Windows/CurrentVersion/Explorer/FileExts"));
             if (regCurrentUserRoot.childGroups().contains(assocName, Qt::CaseInsensitive)) {
                 return (_fileAssocHash.value(assocName)
-                        == regCurrentUserRoot.value(assocName + "/UserChoice/Progid"));
+                        == regCurrentUserRoot.value(assocName + QSL("/UserChoice/Progid")));
             }
             else {
                 regCurrentUserRoot.endGroup();
@@ -352,10 +352,10 @@ bool RegisterQAppAssociation::isDefaultApp(const QString &assocName, Association
             break;
         }
         case UrlAssociation: {
-            regCurrentUserRoot.beginGroup("Software/Microsoft/Windows/Shell/Associations/UrlAssociations");
+            regCurrentUserRoot.beginGroup(QSL("Software/Microsoft/Windows/Shell/Associations/UrlAssociations"));
             if (regCurrentUserRoot.childGroups().contains(assocName, Qt::CaseInsensitive)) {
                 return (_urlAssocHash.value(assocName)
-                        == regCurrentUserRoot.value(assocName + "/UserChoice/Progid"));
+                        == regCurrentUserRoot.value(assocName + QSL("/UserChoice/Progid")));
             }
             else {
                 regCurrentUserRoot.endGroup();
@@ -369,7 +369,7 @@ bool RegisterQAppAssociation::isDefaultApp(const QString &assocName, Association
         }
     }
     else {
-        QSettings regClassesRoot("HKEY_CLASSES_ROOT", QSettings::NativeFormat);
+        QSettings regClassesRoot(QSL("HKEY_CLASSES_ROOT"), QSettings::NativeFormat);
         {
             if (!regClassesRoot.childGroups().contains(assocName, Qt::CaseInsensitive)) {
                 return false;
@@ -378,13 +378,13 @@ bool RegisterQAppAssociation::isDefaultApp(const QString &assocName, Association
         switch (type) {
         case FileAssociation: {
             return (_fileAssocHash.value(assocName)
-                    == regClassesRoot.value(assocName + "/Default"));
+                    == regClassesRoot.value(assocName + QSL("/Default")));
         }
         break;
         case UrlAssociation: {
-            QString currentDefault = regClassesRoot.value(assocName + "/shell/open/command/Default").toString();
+            QString currentDefault = regClassesRoot.value(assocName + QSL("/shell/open/command/Default")).toString();
-            currentDefault.remove("\"");
+            currentDefault.remove(QSL("\""));
-            currentDefault.remove("%1");
+            currentDefault.remove(QSL("%1"));
             currentDefault = currentDefault.trimmed();
             return (_appPath == currentDefault);
         }

src/lib/other/siteinfo.cpp

@@ -56,12 +56,12 @@ SiteInfo::SiteInfo(WebView *view)
     delegate->setUniformItemSizes(true);
     ui->listWidget->setItemDelegate(delegate);
 
-    ui->listWidget->item(0)->setIcon(QIcon::fromTheme("document-properties", QIcon(":/icons/preferences/document-properties.png")));
+    ui->listWidget->item(0)->setIcon(QIcon::fromTheme(QSL("document-properties"), QIcon(QSL(":/icons/preferences/document-properties.png"))));
-    ui->listWidget->item(1)->setIcon(QIcon::fromTheme("applications-graphics", QIcon(":/icons/preferences/applications-graphics.png")));
+    ui->listWidget->item(1)->setIcon(QIcon::fromTheme(QSL("applications-graphics"), QIcon(QSL(":/icons/preferences/applications-graphics.png"))));
     ui->listWidget->item(0)->setSelected(true);
 
     // General
-    ui->heading->setText(QString("<b>%1</b>:").arg(m_view->title()));
+    ui->heading->setText(QSL("<b>%1</b>:").arg(m_view->title()));
     ui->siteAddress->setText(m_view->url().toString());
 
     if (m_view->url().scheme() == QL1S("https"))
@@ -128,19 +128,19 @@ SiteInfo::SiteInfo(WebView *view)
     connect(ui->treeImages, SIGNAL(customContextMenuRequested(QPoint)), this, SLOT(imagesCustomContextMenuRequested(QPoint)));
     connect(ui->treeTags, SIGNAL(customContextMenuRequested(QPoint)), this, SLOT(tagsCustomContextMenuRequested(QPoint)));
 
-    auto *shortcutTagsCopyAll = new QShortcut(QKeySequence("Ctrl+C"), ui->treeTags);
+    auto *shortcutTagsCopyAll = new QShortcut(QKeySequence(QSL("Ctrl+C")), ui->treeTags);
     shortcutTagsCopyAll->setContext(Qt::WidgetShortcut);
     connect(shortcutTagsCopyAll, &QShortcut::activated, [=]{copySelectedItems(ui->treeTags, false);});
 
-    auto *shortcutTagsCopyValues = new QShortcut(QKeySequence("Ctrl+Shift+C"), ui->treeTags);
+    auto *shortcutTagsCopyValues = new QShortcut(QKeySequence(QSL("Ctrl+Shift+C")), ui->treeTags);
     shortcutTagsCopyValues->setContext(Qt::WidgetShortcut);
     connect(shortcutTagsCopyValues, &QShortcut::activated, [=]{copySelectedItems(ui->treeTags, true);});
 
-    auto *shortcutImagesCopyAll = new QShortcut(QKeySequence("Ctrl+C"), ui->treeImages);
+    auto *shortcutImagesCopyAll = new QShortcut(QKeySequence(QSL("Ctrl+C")), ui->treeImages);
     shortcutImagesCopyAll->setContext(Qt::WidgetShortcut);
     connect(shortcutImagesCopyAll, &QShortcut::activated, [=]{copySelectedItems(ui->treeImages, false);});
 
-    auto *shortcutImagesCopyValues = new QShortcut(QKeySequence("Ctrl+Shift+C"), ui->treeImages);
+    auto *shortcutImagesCopyValues = new QShortcut(QKeySequence(QSL("Ctrl+Shift+C")), ui->treeImages);
     shortcutImagesCopyValues->setContext(Qt::WidgetShortcut);
     connect(shortcutImagesCopyValues, &QShortcut::activated, [=]{copySelectedItems(ui->treeImages, true);});
 
@@ -150,7 +150,7 @@ SiteInfo::SiteInfo(WebView *view)
     ui->treeTags->setContextMenuPolicy(Qt::CustomContextMenu);
     ui->treeTags->sortByColumn(-1, Qt::AscendingOrder);
 
-    QzTools::setWmClass("Site Info", this);
+    QzTools::setWmClass(QSL("Site Info"), this);
 }
 
 bool SiteInfo::canShowSiteInfo(const QUrl &url)
@@ -172,10 +172,10 @@ void SiteInfo::imagesCustomContextMenuRequested(const QPoint &p)
     }
 
     QMenu menu;
-    menu.addAction(QIcon::fromTheme("edit-copy"), tr("Copy Image Location"), this, [=]{copySelectedItems(ui->treeImages, false);}, QKeySequence("Ctrl+C"));
+    menu.addAction(QIcon::fromTheme(QSL("edit-copy")), tr("Copy Image Location"), this, [=]{copySelectedItems(ui->treeImages, false);}, QKeySequence(QSL("Ctrl+C")));
-    menu.addAction(tr("Copy Image Name"), this, [=]{copySelectedItems(ui->treeImages, true);}, QKeySequence("Ctrl+Shift+C"));
+    menu.addAction(tr("Copy Image Name"), this, [=]{copySelectedItems(ui->treeImages, true);}, QKeySequence(QSL("Ctrl+Shift+C")));
     menu.addSeparator();
-    menu.addAction(QIcon::fromTheme("document-save"), tr("Save Image to Disk"), this, SLOT(saveImage()));
+    menu.addAction(QIcon::fromTheme(QSL("document-save")), tr("Save Image to Disk"), this, SLOT(saveImage()));
     menu.exec(ui->treeImages->viewport()->mapToGlobal(p));
 }
 
@@ -187,8 +187,8 @@ void SiteInfo::tagsCustomContextMenuRequested(const QPoint &p)
     }
 
     QMenu menu;
-    menu.addAction(tr("Copy Values"), this, [=]{copySelectedItems(ui->treeTags, false);}, QKeySequence("Ctrl+C"));
+    menu.addAction(tr("Copy Values"), this, [=]{copySelectedItems(ui->treeTags, false);}, QKeySequence(QSL("Ctrl+C")));
-    menu.addAction(tr("Copy Tags and Values"), this, [=]{copySelectedItems(ui->treeTags, true);}, QKeySequence("Ctrl+Shift+C"));
+    menu.addAction(tr("Copy Tags and Values"), this, [=]{copySelectedItems(ui->treeTags, true);}, QKeySequence(QSL("Ctrl+Shift+C")));
     menu.exec(ui->treeTags->viewport()->mapToGlobal(p));
 }
 
@@ -237,7 +237,7 @@ void SiteInfo::saveImage()
         imageFileName.append(QL1S(".png"));
     }
 
-    QString filePath = QzTools::getSaveFileName("SiteInfo-DownloadImage", this, tr("Save image..."),
+    QString filePath = QzTools::getSaveFileName(QSL("SiteInfo-DownloadImage"), this, tr("Save image..."),
                                                 QDir::homePath() + QDir::separator() + imageFileName,
                                                 QSL("*.png"));
     if (filePath.isEmpty()) {

src/lib/other/siteinfowidget.cpp

@@ -43,33 +43,33 @@ SiteInfoWidget::SiteInfoWidget(BrowserWindow* window, QWidget* parent)
 
     if (view->url().scheme() == QL1S("https")) {
         ui->secureLabel->setText(tr("Your connection to this site is <b>secured</b>."));
-        ui->secureIcon->setPixmap(QPixmap(":/icons/locationbar/safe.png"));
+        ui->secureIcon->setPixmap(QPixmap(QSL(":/icons/locationbar/safe.png")));
     }
     else {
         ui->secureLabel->setText(tr("Your connection to this site is <b>unsecured</b>."));
-        ui->secureIcon->setPixmap(QPixmap(":/icons/locationbar/unsafe.png"));
+        ui->secureIcon->setPixmap(QPixmap(QSL(":/icons/locationbar/unsafe.png")));
     }
 
     QString scheme = view->url().scheme();
     QString host = view->url().host();
 
     QSqlQuery query(SqlDatabase::instance()->database());
-    query.prepare("SELECT sum(count) FROM history WHERE url LIKE ?");
+    query.prepare(QSL("SELECT sum(count) FROM history WHERE url LIKE ?"));
-    query.addBindValue(QString("%1://%2%").arg(scheme, host));
+    query.addBindValue(QSL("%1://%2%").arg(scheme, host));
     query.exec();
 
     if (query.next()) {
         int count = query.value(0).toInt();
         if (count > 3) {
             ui->historyLabel->setText(tr("This is your <b>%1</b> visit of this site.").arg(QString::number(count) + QLatin1Char('.')));
-            ui->historyIcon->setPixmap(QPixmap(":/icons/locationbar/visit3.png"));
+            ui->historyIcon->setPixmap(QPixmap(QSL(":/icons/locationbar/visit3.png")));
         }
         else if (count == 0) {
             ui->historyLabel->setText(tr("You have <b>never</b> visited this site before."));
-            ui->historyIcon->setPixmap(QPixmap(":/icons/locationbar/visit1.png"));
+            ui->historyIcon->setPixmap(QPixmap(QSL(":/icons/locationbar/visit1.png")));
         }
         else {
-            ui->historyIcon->setPixmap(QPixmap(":/icons/locationbar/visit2.png"));
+            ui->historyIcon->setPixmap(QPixmap(QSL(":/icons/locationbar/visit2.png")));
             QString text;
             if (count == 1) {
                 text = tr("first");

src/lib/other/updater.cpp

@@ -108,7 +108,7 @@ bool Updater::Version::operator <=(const Updater::Version &other) const
 
 QString Updater::Version::versionString() const
 {
-    return QString("%1.%2.%3").arg(majorVersion, minorVersion, revisionNumber);
+    return QSL("%1.%2.%3").arg(majorVersion, minorVersion, revisionNumber);
 }
 
 Updater::Updater(BrowserWindow* window, QObject* parent)
@@ -120,8 +120,8 @@ Updater::Updater(BrowserWindow* window, QObject* parent)
 
 void Updater::start()
 {
-    QUrl url = QUrl(QString("%1/update.php?v=%2&os=%3").arg(Qz::WWWADDRESS,
+    QUrl url = QUrl(QSL("%1/update.php?v=%2&os=%3").arg(QString::fromLatin1(Qz::WWWADDRESS),
-                    Qz::VERSION,
+                    QString::fromLatin1(Qz::VERSION),
                     QzTools::operatingSystem()));
 
     startDownloadingUpdateInfo(url);
@@ -140,15 +140,15 @@ void Updater::downCompleted()
     if (!reply)
         return;
 
-    QString html = reply->readAll();
+    QString html = QString::fromUtf8(reply->readAll());
 
     if (html.startsWith(QLatin1String("Version:"))) {
         html.remove(QLatin1String("Version:"));
-        Version current(Qz::VERSION);
+        Version current(QString::fromLatin1(Qz::VERSION));
         Version updated(html);
 
         if (current.isValid && updated.isValid && current < updated) {
-            mApp->desktopNotifications()->showNotification(QIcon(":icons/falkon.svg").pixmap(48), tr("Update available"), tr("New version of Falkon is ready to download."));
+            mApp->desktopNotifications()->showNotification(QIcon(QSL(":icons/falkon.svg")).pixmap(48), tr("Update available"), tr("New version of Falkon is ready to download."));
         }
     }
 

src/lib/other/useragentmanager.cpp

@@ -29,20 +29,20 @@ UserAgentManager::UserAgentManager(QObject* parent)
     , m_usePerDomainUserAgent(false)
 {
     m_defaultUserAgent = mApp->webProfile()->httpUserAgent();
-    m_defaultUserAgent.replace(QRegularExpression(QSL("(QtWebEngine/[^\\s]+)")), QSL("Falkon/%1 \\1").arg(Qz::VERSION));
+    m_defaultUserAgent.replace(QRegularExpression(QSL("(QtWebEngine/[^\\s]+)")), QSL("Falkon/%1 \\1").arg(QString::fromLatin1(Qz::VERSION)));
 }
 
 void UserAgentManager::loadSettings()
 {
     Settings settings;
-    settings.beginGroup("Web-Browser-Settings");
+    settings.beginGroup(QSL("Web-Browser-Settings"));
-    m_globalUserAgent = settings.value("UserAgent", QString()).toString();
+    m_globalUserAgent = settings.value(QSL("UserAgent"), QString()).toString();
     settings.endGroup();
 
-    settings.beginGroup("User-Agent-Settings");
+    settings.beginGroup(QSL("User-Agent-Settings"));
-    m_usePerDomainUserAgent = settings.value("UsePerDomainUA", false).toBool();
+    m_usePerDomainUserAgent = settings.value(QSL("UsePerDomainUA"), false).toBool();
-    QStringList domainList = settings.value("DomainList", QStringList()).toStringList();
+    QStringList domainList = settings.value(QSL("DomainList"), QStringList()).toStringList();
-    QStringList userAgentsList = settings.value("UserAgentsList", QStringList()).toStringList();
+    QStringList userAgentsList = settings.value(QSL("UserAgentsList"), QStringList()).toStringList();
     settings.endGroup();
 
     m_usePerDomainUserAgent = (m_usePerDomainUserAgent && domainList.count() == userAgentsList.count());

src/lib/plugins/plugins.cpp

@@ -157,8 +157,8 @@ void Plugins::loadSettings()
     }
 
     Settings settings;
-    settings.beginGroup("Plugin-Settings");
+    settings.beginGroup(QSL("Plugin-Settings"));
-    m_allowedPlugins = settings.value("AllowedPlugins", defaultAllowedPlugins).toStringList();
+    m_allowedPlugins = settings.value(QSL("AllowedPlugins"), defaultAllowedPlugins).toStringList();
     settings.endGroup();
 }
 

src/lib/plugins/qml/api/cookies/qmlcookie.cpp

@@ -46,7 +46,7 @@ QString QmlCookie::name() const
     if (!m_cookie) {
         return {};
     }
-    return QString(m_cookie->name());
+    return QString(QString::fromUtf8(m_cookie->name()));
 }
 
 QString QmlCookie::path() const
@@ -78,5 +78,5 @@ QString QmlCookie::value() const
     if (!m_cookie) {
         return {};
     }
-    return QString(m_cookie->value());
+    return QString(QString::fromUtf8(m_cookie->value()));
 }

src/lib/plugins/qml/api/cookies/qmlcookies.cpp

@@ -52,7 +52,7 @@ QNetworkCookie QmlCookies::getNetworkCookie(const QVariantMap &map)
     const QString url = map.value(QSL("url")).toString();
     QVector<QNetworkCookie> cookies = mApp->cookieJar()->getAllCookies();
     for (const QNetworkCookie &cookie : qAsConst(cookies)) {
-        if (cookie.name() == name && cookie.domain() == url) {
+        if (QString::fromUtf8(cookie.name()) == name && cookie.domain() == url) {
             return cookie;
         }
     }
@@ -75,7 +75,7 @@ QList<QObject*> QmlCookies::getAll(const QVariantMap &map)
     const bool session = map.value(QSL("session")).toBool();
     QVector<QNetworkCookie> cookies = mApp->cookieJar()->getAllCookies();
     for (QNetworkCookie cookie : qAsConst(cookies)) {
-        if ((!map.contains(QSL("name")) || cookie.name() == name)
+        if ((!map.contains(QSL("name")) || QString::fromUtf8(cookie.name()) == name)
                 && (!map.contains(QSL("url")) || cookie.domain() == url)
                 && (!map.contains(QSL("path")) || cookie.path() == path)
                 && (!map.contains(QSL("secure")) || cookie.isSecure() == secure)

src/lib/plugins/qml/api/i18n/qmli18n.cpp

@@ -33,7 +33,7 @@ void QmlI18n::initTranslations()
     const bool isLanguageSet = qEnvironmentVariableIsSet("LANGUAGE");
     const QByteArray language = qgetenv("LANGUAGE");
     qputenv("LANGUAGE", QLocale::system().name().toUtf8());
-    bindtextdomain(m_domain.toUtf8(), localeDir.toUtf8());
+    bindtextdomain(m_domain.toUtf8().constData(), localeDir.toUtf8().constData());
     if (!isLanguageSet) {
         qunsetenv("LANGUAGE");
     } else {
@@ -43,10 +43,10 @@ void QmlI18n::initTranslations()
 
 QString QmlI18n::i18n(const QString &string)
 {
-    return QString::fromUtf8(dgettext(m_domain.toUtf8(), string.toUtf8()));
+    return QString::fromUtf8(dgettext(m_domain.toUtf8().constData(), string.toUtf8().constData()));
 }
 
 QString QmlI18n::i18np(const QString &string1, const QString &string2, int count)
 {
-    return QString::fromUtf8(dngettext(m_domain.toUtf8(), string1.toUtf8(), string2.toUtf8(), count));
+    return QString::fromUtf8(dngettext(m_domain.toUtf8().constData(), string1.toUtf8().constData(), string2.toUtf8().constData(), count));
 }

src/lib/plugins/qml/api/menus/qmlaction.cpp

@@ -46,7 +46,7 @@ void QmlAction::setProperties(const QVariantMap &map)
         } else if (key == QSL("shortcut")) {
             m_action->setShortcut(QKeySequence(map.value(key).toString()));
         } else {
-            m_action->setProperty(key.toUtf8(), map.value(key));
+            m_action->setProperty(key.toUtf8().constData(), map.value(key));
         }
     }
 }

src/lib/plugins/qml/api/menus/qmlmenu.cpp

@@ -61,7 +61,7 @@ QmlMenu *QmlMenu::addMenu(const QVariantMap &map)
             newMenu->setIcon(icon);
             continue;
         }
-        newMenu->setProperty(key.toUtf8(), map.value(key));
+        newMenu->setProperty(key.toUtf8().constData(), map.value(key));
     }
     m_menu->addMenu(newMenu);
     auto *newQmlMenu = new QmlMenu(newMenu, m_engine, this);

src/lib/plugins/qml/qmlplugins.cpp

@@ -93,7 +93,7 @@ void QmlPlugins::registerQmlTypes()
     });
 
     // Cookies
-    qmlRegisterUncreatableType<QmlCookie>(url, majorVersion, minorVersion, "Cookie", "Unable to register type: Cookie");
+    qmlRegisterUncreatableType<QmlCookie>(url, majorVersion, minorVersion, "Cookie", QSL("Unable to register type: Cookie"));
 
     qmlRegisterSingletonType<QmlCookies>(url, majorVersion, minorVersion, "Cookies", [](QQmlEngine *engine, QJSEngine *scriptEngine) -> QObject * {
         Q_UNUSED(engine)

src/lib/plugins/speeddial.cpp

@@ -53,28 +53,28 @@ void SpeedDial::loadSettings()
     m_loaded = true;
 
     Settings settings;
-    settings.beginGroup("SpeedDial");
+    settings.beginGroup(QSL("SpeedDial"));
-    QString allPages = settings.value("pages", QString()).toString();
+    QString allPages = settings.value(QSL("pages"), QString()).toString();
-    setBackgroundImage(settings.value("background", QString()).toString());
+    setBackgroundImage(settings.value(QSL("background"), QString()).toString());
-    m_backgroundImageSize = settings.value("backsize", "auto").toString();
+    m_backgroundImageSize = settings.value(QSL("backsize"), QSL("auto")).toString();
-    m_maxPagesInRow = settings.value("pagesrow", 4).toInt();
+    m_maxPagesInRow = settings.value(QSL("pagesrow"), 4).toInt();
-    m_sizeOfSpeedDials = settings.value("sdsize", 231).toInt();
+    m_sizeOfSpeedDials = settings.value(QSL("sdsize"), 231).toInt();
-    m_sdcentered = settings.value("sdcenter", false).toBool();
+    m_sdcentered = settings.value(QSL("sdcenter"), false).toBool();
     settings.endGroup();
 
     if (allPages.isEmpty()) {
-        allPages = "url:\"https://www.falkon.org\"|title:\"Falkon\";"
+        allPages = QL1S("url:\"https://www.falkon.org\"|title:\"Falkon\";"
-                   "url:\"https://store.falkon.org\"|title:\"Falkon Store\";"
+                        "url:\"https://store.falkon.org\"|title:\"Falkon Store\";"
-                   "url:\"https://www.kde.org\"|title:\"KDE Planet\";"
+                        "url:\"https://www.kde.org\"|title:\"KDE Planet\";"
-                   "url:\"https://planet.kde.org\"|title:\"KDE Community\";";
+                        "url:\"https://planet.kde.org\"|title:\"KDE Community\";");
     }
     changed(allPages);
 
-    m_thumbnailsDir = DataPaths::currentProfilePath() + "/thumbnails/";
+    m_thumbnailsDir = DataPaths::currentProfilePath() + QSL("/thumbnails/");
 
     // If needed, create thumbnails directory
     if (!QDir(m_thumbnailsDir).exists()) {
-        QDir(DataPaths::currentProfilePath()).mkdir("thumbnails");
+        QDir(DataPaths::currentProfilePath()).mkdir(QSL("thumbnails"));
     }
 }
 
@@ -83,13 +83,13 @@ void SpeedDial::saveSettings()
     ENSURE_LOADED;
 
     Settings settings;
-    settings.beginGroup("SpeedDial");
+    settings.beginGroup(QSL("SpeedDial"));
-    settings.setValue("pages", generateAllPages());
+    settings.setValue(QSL("pages"), generateAllPages());
-    settings.setValue("background", m_backgroundImageUrl);
+    settings.setValue(QSL("background"), m_backgroundImageUrl);
-    settings.setValue("backsize", m_backgroundImageSize);
+    settings.setValue(QSL("backsize"), m_backgroundImageSize);
-    settings.setValue("pagesrow", m_maxPagesInRow);
+    settings.setValue(QSL("pagesrow"), m_maxPagesInRow);
-    settings.setValue("sdsize", m_sizeOfSpeedDials);
+    settings.setValue(QSL("sdsize"), m_sizeOfSpeedDials);
-    settings.setValue("sdcenter", m_sdcentered);
+    settings.setValue(QSL("sdcenter"), m_sdcentered);
     settings.endGroup();
 }
 
@@ -208,10 +208,10 @@ QString SpeedDial::initialScript()
     QVariantList pages;
 
     for (const Page &page : qAsConst(m_pages)) {
-        QString imgSource = m_thumbnailsDir + QCryptographicHash::hash(page.url.toUtf8(), QCryptographicHash::Md4).toHex() + ".png";
+        QString imgSource = m_thumbnailsDir + QString::fromLatin1(QCryptographicHash::hash(page.url.toUtf8(), QCryptographicHash::Md4).toHex()) + QSL(".png");
 
         if (!QFile(imgSource).exists()) {
-            imgSource = "qrc:html/loading.gif";
+            imgSource = QSL("qrc:html/loading.gif");
 
             if (!page.isValid()) {
                 imgSource.clear();
@@ -228,7 +228,7 @@ QString SpeedDial::initialScript()
         pages.append(map);
     }
 
-    m_initialScript = QJsonDocument::fromVariant(pages).toJson(QJsonDocument::Compact);
+    m_initialScript = QString::fromUtf8(QJsonDocument::fromVariant(pages).toJson(QJsonDocument::Compact));
     return m_initialScript;
 }
 
@@ -273,7 +273,7 @@ void SpeedDial::loadThumbnail(const QString &url, bool loadTitle)
 
 void SpeedDial::removeImageForUrl(const QString &url)
 {
-    QString fileName = m_thumbnailsDir + QCryptographicHash::hash(url.toUtf8(), QCryptographicHash::Md4).toHex() + ".png";
+    QString fileName = m_thumbnailsDir + QString::fromLatin1(QCryptographicHash::hash(url.toUtf8(), QCryptographicHash::Md4).toHex()) + QSL(".png");
 
     if (QFile(fileName).exists()) {
         QFile(fileName).remove();
@@ -282,13 +282,13 @@ void SpeedDial::removeImageForUrl(const QString &url)
 
 QStringList SpeedDial::getOpenFileName()
 {
-    const QString fileTypes = QString("%3(*.png *.jpg *.jpeg *.bmp *.gif *.svg *.tiff)").arg(tr("Image files"));
+    const QString fileTypes = QSL("%3(*.png *.jpg *.jpeg *.bmp *.gif *.svg *.tiff)").arg(tr("Image files"));
-    const QString image = QzTools::getOpenFileName("SpeedDial-GetOpenFileName", 0, tr("Click to select image..."), QDir::homePath(), fileTypes);
+    const QString image = QzTools::getOpenFileName(QSL("SpeedDial-GetOpenFileName"), 0, tr("Click to select image..."), QDir::homePath(), fileTypes);
 
     if (image.isEmpty())
         return {};
 
-    return {QzTools::pixmapToDataUrl(QPixmap(image)).toString(), QUrl::fromLocalFile(image).toEncoded()};
+    return {QzTools::pixmapToDataUrl(QPixmap(image)).toString(), QString::fromUtf8(QUrl::fromLocalFile(image).toEncoded())};
 }
 
 QString SpeedDial::urlFromUserInput(const QString &url)
@@ -334,10 +334,10 @@ void SpeedDial::thumbnailCreated(const QPixmap &pixmap)
     bool loadTitle = thumbnailer->loadTitle();
     QString title = thumbnailer->title();
     QString url = thumbnailer->url().toString();
-    QString fileName = m_thumbnailsDir + QCryptographicHash::hash(url.toUtf8(), QCryptographicHash::Md4).toHex() + ".png";
+    QString fileName = m_thumbnailsDir + QString::fromLatin1(QCryptographicHash::hash(url.toUtf8(), QCryptographicHash::Md4).toHex()) + QSL(".png");
 
     if (pixmap.isNull()) {
-        fileName = ":/html/broken-page.svg";
+        fileName = QSL(":/html/broken-page.svg");
         title = tr("Unable to load");
     }
     else {
@@ -375,7 +375,7 @@ QString SpeedDial::generateAllPages()
     QString allPages;
 
     for (const Page &page : qAsConst(m_pages)) {
-        const QString string = QString(R"(url:"%1"|title:"%2";)").arg(page.url, page.title);
+        const QString string = QSL(R"(url:"%1"|title:"%2";)").arg(page.url, page.title);
         allPages.append(string);
     }
 

src/lib/popupwindow/popupwindow.cpp

@@ -81,10 +81,10 @@ PopupWindow::PopupWindow(PopupWebView* view)
     m_menuBar = new QMenuBar(this);
 
     auto* menuFile = new QMenu(tr("File"));
-    menuFile->addAction(QIcon::fromTheme("mail-message-new"), tr("Send Link..."), m_view, &WebView::sendPageByMail);
+    menuFile->addAction(QIcon::fromTheme(QSL("mail-message-new")), tr("Send Link..."), m_view, &WebView::sendPageByMail);
-    menuFile->addAction(QIcon::fromTheme("document-print"), tr("&Print..."), m_view, &WebView::printPage)->setShortcut(QKeySequence("Ctrl+P"));
+    menuFile->addAction(QIcon::fromTheme(QSL("document-print")), tr("&Print..."), m_view, &WebView::printPage)->setShortcut(QKeySequence(QSL("Ctrl+P")));
     menuFile->addSeparator();
-    menuFile->addAction(QIcon::fromTheme("window-close"), tr("Close"), this, &QWidget::close)->setShortcut(QKeySequence("Ctrl+W"));
+    menuFile->addAction(QIcon::fromTheme(QSL("window-close")), tr("Close"), this, &QWidget::close)->setShortcut(QKeySequence(QSL("Ctrl+W")));
     m_menuBar->addMenu(menuFile);
 
     m_menuEdit = new QMenu(tr("Edit"));
@@ -96,25 +96,25 @@ PopupWindow::PopupWindow(PopupWebView* view)
     m_menuEdit->addAction(m_view->pageAction(QWebEnginePage::Paste));
     m_menuEdit->addSeparator();
     m_menuEdit->addAction(m_view->pageAction(QWebEnginePage::SelectAll));
-    m_menuEdit->addAction(QIcon::fromTheme("edit-find"), tr("Find"), this, &PopupWindow::searchOnPage)->setShortcut(QKeySequence("Ctrl+F"));
+    m_menuEdit->addAction(QIcon::fromTheme(QSL("edit-find")), tr("Find"), this, &PopupWindow::searchOnPage)->setShortcut(QKeySequence(QSL("Ctrl+F")));
     m_menuBar->addMenu(m_menuEdit);
 
     m_menuView = new QMenu(tr("View"));
     m_actionStop = m_menuView->addAction(QIcon::fromTheme(QSL("process-stop")), tr("&Stop"), m_view, &QWebEngineView::stop);
-    m_actionStop->setShortcut(QKeySequence("Esc"));
+    m_actionStop->setShortcut(QKeySequence(QSL("Esc")));
     m_actionReload = m_menuView->addAction(QIcon::fromTheme(QSL("view-refresh")), tr("&Reload"), m_view, &QWebEngineView::reload);
-    m_actionReload->setShortcut(QKeySequence("F5"));
+    m_actionReload->setShortcut(QKeySequence(QSL("F5")));
     m_menuView->addSeparator();
-    m_menuView->addAction(QIcon::fromTheme("zoom-in"), tr("Zoom &In"), m_view, &WebView::zoomIn)->setShortcut(QKeySequence("Ctrl++"));
+    m_menuView->addAction(QIcon::fromTheme(QSL("zoom-in")), tr("Zoom &In"), m_view, &WebView::zoomIn)->setShortcut(QKeySequence(QSL("Ctrl++")));
-    m_menuView->addAction(QIcon::fromTheme("zoom-out"), tr("Zoom &Out"), m_view, &WebView::zoomOut)->setShortcut(QKeySequence("Ctrl+-"));
+    m_menuView->addAction(QIcon::fromTheme(QSL("zoom-out")), tr("Zoom &Out"), m_view, &WebView::zoomOut)->setShortcut(QKeySequence(QSL("Ctrl+-")));
-    m_menuView->addAction(QIcon::fromTheme("zoom-original"), tr("Reset"), m_view, &WebView::zoomReset)->setShortcut(QKeySequence("Ctrl+0"));
+    m_menuView->addAction(QIcon::fromTheme(QSL("zoom-original")), tr("Reset"), m_view, &WebView::zoomReset)->setShortcut(QKeySequence(QSL("Ctrl+0")));
     m_menuView->addSeparator();
-    m_menuView->addAction(QIcon::fromTheme("text-html"), tr("&Page Source"), m_view, &WebView::showSource)->setShortcut(QKeySequence("Ctrl+U"));
+    m_menuView->addAction(QIcon::fromTheme(QSL("text-html")), tr("&Page Source"), m_view, &WebView::showSource)->setShortcut(QKeySequence(QSL("Ctrl+U")));
     m_menuBar->addMenu(m_menuView);
 
     // Make shortcuts available even with hidden menubar
     QList<QAction*> actions = m_menuBar->actions();
-    foreach (QAction* action, actions) {
+    for (QAction* action : std::as_const(actions)) {
         if (action->menu()) {
             actions += action->menu()->actions();
         }
@@ -273,7 +273,7 @@ void PopupWindow::titleChanged()
 
 void PopupWindow::setWindowGeometry(QRect newRect)
 {
-    if (!Settings().value("allowJavaScriptGeometryChange", true).toBool())
+    if (!Settings().value(QSL("allowJavaScriptGeometryChange"), true).toBool())
         return;
 
     // left/top was set while width/height not

src/lib/preferences/acceptlanguage.cpp

@@ -64,7 +64,7 @@ QByteArray AcceptLanguage::generateHeader(const QStringList &langs)
 
     int counter = 8;
     for (int i = 1; i < langs.count(); i++) {
-        QString s = "," + langs.at(i) + ";q=0.";
+        QString s = QSL(",") + langs.at(i) + QSL(";q=0.");
         s.append(QString::number(counter));
         if (counter != 2) {
             counter -= 2;
@@ -86,8 +86,8 @@ AcceptLanguage::AcceptLanguage(QWidget* parent)
     ui->listWidget->setLayoutDirection(Qt::LeftToRight);
 
     Settings settings;
-    settings.beginGroup("Language");
+    settings.beginGroup(QSL("Language"));
-    const QStringList langs = settings.value("acceptLanguage", defaultLanguage()).toStringList();
+    const QStringList langs = settings.value(QSL("acceptLanguage"), defaultLanguage()).toStringList();
     settings.endGroup();
 
     for (const QString &code : langs) {
@@ -99,7 +99,7 @@ AcceptLanguage::AcceptLanguage(QWidget* parent)
             label = tr("Personal [%1]").arg(code);
         }
         else {
-            label = QString("%1/%2 [%3]").arg(loc.languageToString(loc.language()), loc.countryToString(loc.country()), code);
+            label = QSL("%1/%2 [%3]").arg(loc.languageToString(loc.language()), loc.countryToString(loc.country()), code);
         }
 
         ui->listWidget->addItem(label);
@@ -216,8 +216,8 @@ void AcceptLanguage::accept()
     }
 
     Settings settings;
-    settings.beginGroup("Language");
+    settings.beginGroup(QSL("Language"));
-    settings.setValue("acceptLanguage", langs);
+    settings.setValue(QSL("acceptLanguage"), langs);
 
     mApp->networkManager()->loadSettings();
 

src/lib/preferences/autofillmanager.cpp

@@ -70,7 +70,7 @@ AutoFillManager::AutoFillManager(QWidget* parent)
     ui->search->setPlaceholderText(tr("Search"));
 
     // Password backends
-    ui->currentBackend->setText(QString("<b>%1</b>").arg(m_passwordManager->activeBackend()->name()));
+    ui->currentBackend->setText(QSL("<b>%1</b>").arg(m_passwordManager->activeBackend()->name()));
     ui->backendOptions->setVisible(m_passwordManager->activeBackend()->hasSettings());
 
     // Load passwords
@@ -89,7 +89,7 @@ void AutoFillManager::loadPasswords()
         auto* item = new QTreeWidgetItem(ui->treePass);
         item->setText(0, entry.host);
         item->setText(1, entry.username);
-        item->setText(2, "*****");
+        item->setText(2, QSL("*****"));
 
         QVariant v;
         v.setValue(entry);
@@ -98,7 +98,7 @@ void AutoFillManager::loadPasswords()
     }
 
     QSqlQuery query(SqlDatabase::instance()->database());
-    query.exec("SELECT server, id FROM autofill_exceptions");
+    query.exec(QSL("SELECT server, id FROM autofill_exceptions"));
     ui->treeExcept->clear();
     while (query.next()) {
         auto* item = new QTreeWidgetItem(ui->treeExcept);
@@ -165,7 +165,7 @@ void AutoFillManager::showPasswords()
             if (!item) {
                 continue;
             }
-            item->setText(2, "*****");
+            item->setText(2, QSL("*****"));
         }
 
         ui->showPasswords->setText(tr("Show Passwords"));
@@ -277,7 +277,7 @@ void AutoFillManager::removeExcept()
     }
     QString id = curItem->data(0, Qt::UserRole + 10).toString();
     QSqlQuery query(SqlDatabase::instance()->database());
-    query.prepare("DELETE FROM autofill_exceptions WHERE id=?");
+    query.prepare(QSL("DELETE FROM autofill_exceptions WHERE id=?"));
     query.addBindValue(id);
     query.exec();
 
@@ -287,7 +287,7 @@ void AutoFillManager::removeExcept()
 void AutoFillManager::removeAllExcept()
 {
     QSqlQuery query(SqlDatabase::instance()->database());
-    query.exec("DELETE FROM autofill_exceptions");
+    query.exec(QSL("DELETE FROM autofill_exceptions"));
 
     ui->treeExcept->clear();
 }
@@ -299,7 +299,7 @@ void AutoFillManager::showExceptions()
 
 void AutoFillManager::importPasswords()
 {
-    m_fileName = QzTools::getOpenFileName("AutoFill-ImportPasswords", this, tr("Choose file..."), QDir::homePath() + "/passwords.xml", "*.xml");
+    m_fileName = QzTools::getOpenFileName(QSL("AutoFill-ImportPasswords"), this, tr("Choose file..."), QDir::homePath() + QSL("/passwords.xml"), QSL("*.xml"));
 
     if (m_fileName.isEmpty()) {
         return;
@@ -310,7 +310,7 @@ void AutoFillManager::importPasswords()
 
 void AutoFillManager::exportPasswords()
 {
-    m_fileName = QzTools::getSaveFileName("AutoFill-ExportPasswords", this, tr("Choose file..."), QDir::homePath() + "/passwords.xml", "*.xml");
+    m_fileName = QzTools::getSaveFileName(QSL("AutoFill-ExportPasswords"), this, tr("Choose file..."), QDir::homePath() + QSL("/passwords.xml"), QSL("*.xml"));
 
     if (m_fileName.isEmpty()) {
         return;
@@ -360,7 +360,7 @@ void AutoFillManager::slotExportPasswords()
 
 void AutoFillManager::currentPasswordBackendChanged()
 {
-    ui->currentBackend->setText(QString("<b>%1</b>").arg(m_passwordManager->activeBackend()->name()));
+    ui->currentBackend->setText(QSL("<b>%1</b>").arg(m_passwordManager->activeBackend()->name()));
     ui->backendOptions->setVisible(m_passwordManager->activeBackend()->hasSettings());
 
     QTimer::singleShot(0, this, &AutoFillManager::loadPasswords);

src/lib/preferences/certificatemanager.cpp

@@ -36,8 +36,8 @@ CertificateManager::CertificateManager(QWidget* parent)
     ui->listWidget->setLayoutDirection(Qt::LeftToRight);
 
     Settings settings;
-    settings.beginGroup("Web-Browser-Settings");
+    settings.beginGroup(QSL("Web-Browser-Settings"));
-    m_ignoredSslHosts = settings.value("IgnoredSslHosts", QStringList()).toStringList();
+    m_ignoredSslHosts = settings.value(QSL("IgnoredSslHosts"), QStringList()).toStringList();
     settings.endGroup();
     ui->listWidget->addItems(m_ignoredSslHosts);
 
@@ -101,8 +101,8 @@ void CertificateManager::removeException()
 void CertificateManager::accept()
 {
     Settings settings;
-    settings.beginGroup("Web-Browser-Settings");
+    settings.beginGroup(QSL("Web-Browser-Settings"));
-    settings.setValue("IgnoredSslHosts", m_ignoredSslHosts);
+    settings.setValue(QSL("IgnoredSslHosts"), m_ignoredSslHosts);
     settings.endGroup();
 
     mApp->networkManager()->loadSettings();

src/lib/preferences/jsoptions.cpp

@@ -31,22 +31,22 @@ JsOptions::JsOptions(QWidget* parent)
     ui->setupUi(this);
 
     Settings settings;
-    settings.beginGroup("Web-Browser-Settings");
+    settings.beginGroup(QSL("Web-Browser-Settings"));
-    ui->jscanOpenWindow->setChecked(settings.value("allowJavaScriptOpenWindow", false).toBool());
+    ui->jscanOpenWindow->setChecked(settings.value(QSL("allowJavaScriptOpenWindow"), false).toBool());
-    ui->jscanActivateWindow->setChecked(settings.value("allowJavaScriptActivateWindow", false).toBool());
+    ui->jscanActivateWindow->setChecked(settings.value(QSL("allowJavaScriptActivateWindow"), false).toBool());
-    ui->jscanAccessClipboard->setChecked(settings.value("allowJavaScriptAccessClipboard", true).toBool());
+    ui->jscanAccessClipboard->setChecked(settings.value(QSL("allowJavaScriptAccessClipboard"), true).toBool());
-    ui->jscanPaste->setChecked(settings.value("allowJavaScriptPaste", true).toBool());
+    ui->jscanPaste->setChecked(settings.value(QSL("allowJavaScriptPaste"), true).toBool());
     settings.endGroup();
 }
 
 void JsOptions::accept()
 {
     Settings settings;
-    settings.beginGroup("Web-Browser-Settings");
+    settings.beginGroup(QSL("Web-Browser-Settings"));
-    settings.setValue("allowJavaScriptOpenWindow", ui->jscanOpenWindow->isChecked());
+    settings.setValue(QSL("allowJavaScriptOpenWindow"), ui->jscanOpenWindow->isChecked());
-    settings.setValue("allowJavaScriptActivateWindow", ui->jscanActivateWindow->isChecked());
+    settings.setValue(QSL("allowJavaScriptActivateWindow"), ui->jscanActivateWindow->isChecked());
-    settings.setValue("allowJavaScriptAccessClipboard", ui->jscanAccessClipboard->isChecked());
+    settings.setValue(QSL("allowJavaScriptAccessClipboard"), ui->jscanAccessClipboard->isChecked());
-    settings.setValue("allowJavaScriptPaste", ui->jscanPaste->isChecked());
+    settings.setValue(QSL("allowJavaScriptPaste"), ui->jscanPaste->isChecked());
     settings.endGroup();
 
     QDialog::close();

src/lib/preferences/pluginsmanager.cpp

@@ -42,8 +42,8 @@ PluginsManager::PluginsManager(QWidget* parent)
 
     //Application Extensions
     Settings settings;
-    settings.beginGroup("Plugin-Settings");
+    settings.beginGroup(QSL("Plugin-Settings"));
-    bool appPluginsEnabled = settings.value("EnablePlugins", true).toBool();
+    bool appPluginsEnabled = settings.value(QSL("EnablePlugins"), true).toBool();
     settings.endGroup();
 
     ui->list->setEnabled(appPluginsEnabled);
@@ -83,8 +83,8 @@ void PluginsManager::save()
     }
 
     Settings settings;
-    settings.beginGroup("Plugin-Settings");
+    settings.beginGroup(QSL("Plugin-Settings"));
-    settings.setValue("AllowedPlugins", allowedPlugins);
+    settings.setValue(QSL("AllowedPlugins"), allowedPlugins);
     settings.endGroup();
 }
 

src/lib/preferences/preferences.cpp

@@ -77,7 +77,7 @@ static QString createLanguageItem(const QString &lang)
         return QString::fromUtf8("Castellano");
     }
     if (lang == QLatin1String("nqo")) {
-        return {"N'ko (nqo)"};
+        return QSL("N'ko (nqo)");
     }
     if (lang == QLatin1String("sr")) {
         return QString::fromUtf8("српски екавски");
@@ -134,19 +134,19 @@ Preferences::Preferences(BrowserWindow* window)
 
     Settings settings;
     //GENERAL URLs
-    settings.beginGroup("Web-URL-Settings");
+    settings.beginGroup(QSL("Web-URL-Settings"));
-    m_homepage = settings.value("homepage", QUrl(QSL("falkon:start"))).toUrl();
+    m_homepage = settings.value(QSL("homepage"), QUrl(QSL("falkon:start"))).toUrl();
-    m_newTabUrl = settings.value("newTabUrl", QUrl(QSL("falkon:speeddial"))).toUrl();
+    m_newTabUrl = settings.value(QSL("newTabUrl"), QUrl(QSL("falkon:speeddial"))).toUrl();
-    ui->homepage->setText(m_homepage.toEncoded());
+    ui->homepage->setText(QString::fromUtf8(m_homepage.toEncoded()));
-    ui->newTabUrl->setText(m_newTabUrl.toEncoded());
+    ui->newTabUrl->setText(QString::fromUtf8(m_newTabUrl.toEncoded()));
     settings.endGroup();
     ui->afterLaunch->setCurrentIndex(mApp->afterLaunch());
-    ui->checkUpdates->setChecked(settings.value("Web-Browser-Settings/CheckUpdates", true).toBool());
+    ui->checkUpdates->setChecked(settings.value(QSL("Web-Browser-Settings/CheckUpdates"), true).toBool());
-    ui->dontLoadTabsUntilSelected->setChecked(settings.value("Web-Browser-Settings/LoadTabsOnActivation", true).toBool());
+    ui->dontLoadTabsUntilSelected->setChecked(settings.value(QSL("Web-Browser-Settings/LoadTabsOnActivation"), true).toBool());
 
 #if defined(Q_OS_WIN) && !defined(Q_OS_OS2)
     if (!mApp->isPortable()) {
-        ui->checkDefaultBrowser->setChecked(settings.value("Web-Browser-Settings/CheckDefaultBrowser",
+        ui->checkDefaultBrowser->setChecked(settings.value(QSL("Web-Browser-Settings/CheckDefaultBrowser"),
                                                            DEFAULT_CHECK_DEFAULTBROWSER).toBool());
         if (mApp->associationManager()->isDefaultForAllCapabilities()) {
             ui->checkNowDefaultBrowser->setText(tr("Default"));
@@ -215,141 +215,141 @@ Preferences::Preferences(BrowserWindow* window)
     startProfileIndexChanged(ui->startProfile->currentIndex());
 
     //APPEREANCE
-    settings.beginGroup("Browser-View-Settings");
+    settings.beginGroup(QSL("Browser-View-Settings"));
-    ui->showStatusbar->setChecked(settings.value("showStatusBar", false).toBool());
+    ui->showStatusbar->setChecked(settings.value(QSL("showStatusBar"), false).toBool());
     // NOTE: instantBookmarksToolbar and showBookmarksToolbar cannot be both enabled at the same time
-    ui->instantBookmarksToolbar->setChecked(settings.value("instantBookmarksToolbar", false).toBool());
+    ui->instantBookmarksToolbar->setChecked(settings.value(QSL("instantBookmarksToolbar"), false).toBool());
-    ui->showBookmarksToolbar->setChecked(settings.value("showBookmarksToolbar", false).toBool());
+    ui->showBookmarksToolbar->setChecked(settings.value(QSL("showBookmarksToolbar"), false).toBool());
-    ui->instantBookmarksToolbar->setDisabled(settings.value("showBookmarksToolbar", false).toBool());
+    ui->instantBookmarksToolbar->setDisabled(settings.value(QSL("showBookmarksToolbar"), false).toBool());
-    ui->showBookmarksToolbar->setDisabled(settings.value("instantBookmarksToolbar").toBool());
+    ui->showBookmarksToolbar->setDisabled(settings.value(QSL("instantBookmarksToolbar")).toBool());
     connect(ui->instantBookmarksToolbar, &QAbstractButton::toggled, ui->showBookmarksToolbar, &QWidget::setDisabled);
     connect(ui->showBookmarksToolbar, &QAbstractButton::toggled, ui->instantBookmarksToolbar, &QWidget::setDisabled);
-    ui->showNavigationToolbar->setChecked(settings.value("showNavigationToolbar", true).toBool());
+    ui->showNavigationToolbar->setChecked(settings.value(QSL("showNavigationToolbar"), true).toBool());
-    int currentSettingsPage = settings.value("settingsDialogPage", 0).toInt(0);
+    int currentSettingsPage = settings.value(QSL("settingsDialogPage"), 0).toInt(0);
     settings.endGroup();
 
     //TABS
-    settings.beginGroup("Browser-Tabs-Settings");
+    settings.beginGroup(QSL("Browser-Tabs-Settings"));
-    ui->hideTabsOnTab->setChecked(settings.value("hideTabsWithOneTab", false).toBool());
+    ui->hideTabsOnTab->setChecked(settings.value(QSL("hideTabsWithOneTab"), false).toBool());
-    ui->activateLastTab->setChecked(settings.value("ActivateLastTabWhenClosingActual", false).toBool());
+    ui->activateLastTab->setChecked(settings.value(QSL("ActivateLastTabWhenClosingActual"), false).toBool());
-    ui->openNewTabAfterActive->setChecked(settings.value("newTabAfterActive", true).toBool());
+    ui->openNewTabAfterActive->setChecked(settings.value(QSL("newTabAfterActive"), true).toBool());
-    ui->openNewEmptyTabAfterActive->setChecked(settings.value("newEmptyTabAfterActive", false).toBool());
+    ui->openNewEmptyTabAfterActive->setChecked(settings.value(QSL("newEmptyTabAfterActive"), false).toBool());
-    ui->openPopupsInTabs->setChecked(settings.value("OpenPopupsInTabs", false).toBool());
+    ui->openPopupsInTabs->setChecked(settings.value(QSL("OpenPopupsInTabs"), false).toBool());
-    ui->alwaysSwitchTabsWithWheel->setChecked(settings.value("AlwaysSwitchTabsWithWheel", false).toBool());
+    ui->alwaysSwitchTabsWithWheel->setChecked(settings.value(QSL("AlwaysSwitchTabsWithWheel"), false).toBool());
-    ui->switchToNewTabs->setChecked(settings.value("OpenNewTabsSelected", false).toBool());
+    ui->switchToNewTabs->setChecked(settings.value(QSL("OpenNewTabsSelected"), false).toBool());
-    ui->dontCloseOnLastTab->setChecked(settings.value("dontCloseWithOneTab", false).toBool());
+    ui->dontCloseOnLastTab->setChecked(settings.value(QSL("dontCloseWithOneTab"), false).toBool());
-    ui->askWhenClosingMultipleTabs->setChecked(settings.value("AskOnClosing", false).toBool());
+    ui->askWhenClosingMultipleTabs->setChecked(settings.value(QSL("AskOnClosing"), false).toBool());
-    ui->showClosedTabsButton->setChecked(settings.value("showClosedTabsButton", false).toBool());
+    ui->showClosedTabsButton->setChecked(settings.value(QSL("showClosedTabsButton"), false).toBool());
-    ui->showCloseOnInactive->setCurrentIndex(settings.value("showCloseOnInactiveTabs", 0).toInt());
+    ui->showCloseOnInactive->setCurrentIndex(settings.value(QSL("showCloseOnInactiveTabs"), 0).toInt());
     settings.endGroup();
 
     //AddressBar
-    settings.beginGroup("AddressBar");
+    settings.beginGroup(QSL("AddressBar"));
-    ui->addressbarCompletion->setCurrentIndex(settings.value("showSuggestions", 0).toInt());
+    ui->addressbarCompletion->setCurrentIndex(settings.value(QSL("showSuggestions"), 0).toInt());
-    ui->useInlineCompletion->setChecked(settings.value("useInlineCompletion", true).toBool());
+    ui->useInlineCompletion->setChecked(settings.value(QSL("useInlineCompletion"), true).toBool());
-    ui->completionShowSwitchTab->setChecked(settings.value("showSwitchTab", true).toBool());
+    ui->completionShowSwitchTab->setChecked(settings.value(QSL("showSwitchTab"), true).toBool());
-    ui->alwaysShowGoIcon->setChecked(settings.value("alwaysShowGoIcon", false).toBool());
+    ui->alwaysShowGoIcon->setChecked(settings.value(QSL("alwaysShowGoIcon"), false).toBool());
-    ui->showZoomLabel->setChecked(settings.value("showZoomLabel", true).toBool());
+    ui->showZoomLabel->setChecked(settings.value(QSL("showZoomLabel"), true).toBool());
-    ui->selectAllOnFocus->setChecked(settings.value("SelectAllTextOnDoubleClick", true).toBool());
+    ui->selectAllOnFocus->setChecked(settings.value(QSL("SelectAllTextOnDoubleClick"), true).toBool());
-    ui->selectAllOnClick->setChecked(settings.value("SelectAllTextOnClick", false).toBool());
+    ui->selectAllOnClick->setChecked(settings.value(QSL("SelectAllTextOnClick"), false).toBool());
-    ui->completionPopupExpandToWindow->setChecked(settings.value("CompletionPopupExpandToWindow", false).toBool());
+    ui->completionPopupExpandToWindow->setChecked(settings.value(QSL("CompletionPopupExpandToWindow"), false).toBool());
-    bool showPBinAB = settings.value("ShowLoadingProgress", false).toBool();
+    bool showPBinAB = settings.value(QSL("ShowLoadingProgress"), false).toBool();
     ui->showLoadingInAddressBar->setChecked(showPBinAB);
     ui->adressProgressSettings->setEnabled(showPBinAB);
-    ui->progressStyleSelector->setCurrentIndex(settings.value("ProgressStyle", 0).toInt());
+    ui->progressStyleSelector->setCurrentIndex(settings.value(QSL("ProgressStyle"), 0).toInt());
-    bool pbInABuseCC = settings.value("UseCustomProgressColor", false).toBool();
+    bool pbInABuseCC = settings.value(QSL("UseCustomProgressColor"), false).toBool();
     ui->checkBoxCustomProgressColor->setChecked(pbInABuseCC);
     ui->progressBarColorSelector->setEnabled(pbInABuseCC);
-    QColor pbColor = settings.value("CustomProgressColor", palette().color(QPalette::Highlight)).value<QColor>();
+    QColor pbColor = settings.value(QSL("CustomProgressColor"), palette().color(QPalette::Highlight)).value<QColor>();
     setProgressBarColorIcon(pbColor);
     connect(ui->customColorToolButton, &QAbstractButton::clicked, this, &Preferences::selectCustomProgressBarColor);
     connect(ui->resetProgressBarcolor, SIGNAL(clicked()), SLOT(setProgressBarColorIcon()));
     settings.endGroup();
 
-    settings.beginGroup("SearchEngines");
+    settings.beginGroup(QSL("SearchEngines"));
-    bool searchFromAB = settings.value("SearchFromAddressBar", true).toBool();
+    bool searchFromAB = settings.value(QSL("SearchFromAddressBar"), true).toBool();
     ui->searchFromAddressBar->setChecked(searchFromAB);
     ui->searchWithDefaultEngine->setEnabled(searchFromAB);
-    ui->searchWithDefaultEngine->setChecked(settings.value("SearchWithDefaultEngine", true).toBool());
+    ui->searchWithDefaultEngine->setChecked(settings.value(QSL("SearchWithDefaultEngine"), true).toBool());
     ui->showABSearchSuggestions->setEnabled(searchFromAB);
-    ui->showABSearchSuggestions->setChecked(settings.value("showSearchSuggestions", true).toBool());
+    ui->showABSearchSuggestions->setChecked(settings.value(QSL("showSearchSuggestions"), true).toBool());
     connect(ui->searchFromAddressBar, &QAbstractButton::toggled, this, &Preferences::searchFromAddressBarChanged);
     settings.endGroup();
 
     // BROWSING
-    settings.beginGroup("Web-Browser-Settings");
+    settings.beginGroup(QSL("Web-Browser-Settings"));
-    ui->allowPlugins->setChecked(settings.value("allowPlugins", true).toBool());
+    ui->allowPlugins->setChecked(settings.value(QSL("allowPlugins"), true).toBool());
     connect(ui->allowPlugins, &QAbstractButton::toggled, this, &Preferences::allowPluginsToggled);
-    ui->allowJavaScript->setChecked(settings.value("allowJavaScript", true).toBool());
+    ui->allowJavaScript->setChecked(settings.value(QSL("allowJavaScript"), true).toBool());
-    ui->linksInFocusChain->setChecked(settings.value("IncludeLinkInFocusChain", false).toBool());
+    ui->linksInFocusChain->setChecked(settings.value(QSL("IncludeLinkInFocusChain"), false).toBool());
-    ui->spatialNavigation->setChecked(settings.value("SpatialNavigation", false).toBool());
+    ui->spatialNavigation->setChecked(settings.value(QSL("SpatialNavigation"), false).toBool());
-    ui->animateScrolling->setChecked(settings.value("AnimateScrolling", true).toBool());
+    ui->animateScrolling->setChecked(settings.value(QSL("AnimateScrolling"), true).toBool());
-    ui->wheelScroll->setValue(settings.value("wheelScrollLines", qApp->wheelScrollLines()).toInt());
+    ui->wheelScroll->setValue(settings.value(QSL("wheelScrollLines"), qApp->wheelScrollLines()).toInt());
-    ui->xssAuditing->setChecked(settings.value("XSSAuditing", false).toBool());
+    ui->xssAuditing->setChecked(settings.value(QSL("XSSAuditing"), false).toBool());
-    ui->printEBackground->setChecked(settings.value("PrintElementBackground", true).toBool());
+    ui->printEBackground->setChecked(settings.value(QSL("PrintElementBackground"), true).toBool());
-    ui->useNativeScrollbars->setChecked(settings.value("UseNativeScrollbars", false).toBool());
+    ui->useNativeScrollbars->setChecked(settings.value(QSL("UseNativeScrollbars"), false).toBool());
-    ui->disableVideoAutoPlay->setChecked(settings.value("DisableVideoAutoPlay", false).toBool());
+    ui->disableVideoAutoPlay->setChecked(settings.value(QSL("DisableVideoAutoPlay"), false).toBool());
-    ui->webRTCPublicIpOnly->setChecked(settings.value("WebRTCPublicIpOnly", true).toBool());
+    ui->webRTCPublicIpOnly->setChecked(settings.value(QSL("WebRTCPublicIpOnly"), true).toBool());
-    ui->dnsPrefetch->setChecked(settings.value("DNSPrefetch", true).toBool());
+    ui->dnsPrefetch->setChecked(settings.value(QSL("DNSPrefetch"), true).toBool());
-    ui->intPDFViewer->setChecked(settings.value("intPDFViewer", false).toBool());
+    ui->intPDFViewer->setChecked(settings.value(QSL("intPDFViewer"), false).toBool());
     ui->intPDFViewer->setEnabled(ui->allowPlugins->isChecked());
-    ui->screenCaptureEnabled->setChecked(settings.value("screenCaptureEnabled", false).toBool());
+    ui->screenCaptureEnabled->setChecked(settings.value(QSL("screenCaptureEnabled"), false).toBool());
-    ui->hardwareAccel->setChecked(settings.value("hardwareAccel", false).toBool());
+    ui->hardwareAccel->setChecked(settings.value(QSL("hardwareAccel"), false).toBool());
 
     const auto levels = WebView::zoomLevels();
     for (int level : levels) {
         ui->defaultZoomLevel->addItem(tr("%1%").arg(QString::number(level)));
     }
-    ui->defaultZoomLevel->setCurrentIndex(settings.value("DefaultZoomLevel", WebView::zoomLevels().indexOf(100)).toInt());
+    ui->defaultZoomLevel->setCurrentIndex(settings.value(QSL("DefaultZoomLevel"), WebView::zoomLevels().indexOf(100)).toInt());
-    ui->closeAppWithCtrlQ->setChecked(settings.value("closeAppWithCtrlQ", true).toBool());
+    ui->closeAppWithCtrlQ->setChecked(settings.value(QSL("closeAppWithCtrlQ"), true).toBool());
 
     //Cache
-    ui->allowCache->setChecked(settings.value("AllowLocalCache", true).toBool());
+    ui->allowCache->setChecked(settings.value(QSL("AllowLocalCache"), true).toBool());
-    ui->removeCache->setChecked(settings.value("deleteCacheOnClose", false).toBool());
+    ui->removeCache->setChecked(settings.value(QSL("deleteCacheOnClose"), false).toBool());
-    ui->cacheMB->setValue(settings.value("LocalCacheSize", 50).toInt());
+    ui->cacheMB->setValue(settings.value(QSL("LocalCacheSize"), 50).toInt());
-    ui->cachePath->setText(settings.value("CachePath", mApp->webProfile()->cachePath()).toString());
+    ui->cachePath->setText(settings.value(QSL("CachePath"), mApp->webProfile()->cachePath()).toString());
     connect(ui->allowCache, &QAbstractButton::clicked, this, &Preferences::allowCacheChanged);
     connect(ui->changeCachePath, &QAbstractButton::clicked, this, &Preferences::changeCachePathClicked);
     allowCacheChanged(ui->allowCache->isChecked());
 
     //PASSWORD MANAGER
-    ui->allowPassManager->setChecked(settings.value("SavePasswordsOnSites", true).toBool());
+    ui->allowPassManager->setChecked(settings.value(QSL("SavePasswordsOnSites"), true).toBool());
-    ui->autoCompletePasswords->setChecked(settings.value("AutoCompletePasswords", true).toBool());
+    ui->autoCompletePasswords->setChecked(settings.value(QSL("AutoCompletePasswords"), true).toBool());
 
     //PRIVACY
     //Web storage
-    ui->saveHistory->setChecked(settings.value("allowHistory", true).toBool());
+    ui->saveHistory->setChecked(settings.value(QSL("allowHistory"), true).toBool());
-    ui->deleteHistoryOnClose->setChecked(settings.value("deleteHistoryOnClose", false).toBool());
+    ui->deleteHistoryOnClose->setChecked(settings.value(QSL("deleteHistoryOnClose"), false).toBool());
     if (!ui->saveHistory->isChecked()) {
         ui->deleteHistoryOnClose->setEnabled(false);
     }
     connect(ui->saveHistory, &QAbstractButton::toggled, this, &Preferences::saveHistoryChanged);
 
     // Html5Storage
-    ui->html5storage->setChecked(settings.value("HTML5StorageEnabled", true).toBool());
+    ui->html5storage->setChecked(settings.value(QSL("HTML5StorageEnabled"), true).toBool());
-    ui->deleteHtml5storageOnClose->setChecked(settings.value("deleteHTML5StorageOnClose", false).toBool());
+    ui->deleteHtml5storageOnClose->setChecked(settings.value(QSL("deleteHTML5StorageOnClose"), false).toBool());
     connect(ui->html5storage, &QAbstractButton::toggled, this, &Preferences::allowHtml5storageChanged);
     // Other
-    ui->doNotTrack->setChecked(settings.value("DoNotTrack", false).toBool());
+    ui->doNotTrack->setChecked(settings.value(QSL("DoNotTrack"), false).toBool());
 
     //CSS Style
-    ui->userStyleSheet->setText(settings.value("userStyleSheet", "").toString());
+    ui->userStyleSheet->setText(settings.value(QSL("userStyleSheet"), QSL("")).toString());
     connect(ui->chooseUserStylesheet, &QAbstractButton::clicked, this, &Preferences::chooseUserStyleClicked);
     settings.endGroup();
 
     //DOWNLOADS
-    settings.beginGroup("DownloadManager");
+    settings.beginGroup(QSL("DownloadManager"));
-    ui->downLoc->setText(settings.value("defaultDownloadPath", "").toString());
+    ui->downLoc->setText(settings.value(QSL("defaultDownloadPath"), QSL("")).toString());
-    ui->closeDownManOnFinish->setChecked(settings.value("CloseManagerOnFinish", false).toBool());
+    ui->closeDownManOnFinish->setChecked(settings.value(QSL("CloseManagerOnFinish"), false).toBool());
     if (ui->downLoc->text().isEmpty()) {
         ui->askEverytime->setChecked(true);
     }
     else {
         ui->useDefined->setChecked(true);
     }
-    ui->useExternalDownManager->setChecked(settings.value("UseExternalManager", false).toBool());
+    ui->useExternalDownManager->setChecked(settings.value(QSL("UseExternalManager"), false).toBool());
-    ui->externalDownExecutable->setText(settings.value("ExternalManagerExecutable", "").toString());
+    ui->externalDownExecutable->setText(settings.value(QSL("ExternalManagerExecutable"), QSL("")).toString());
-    ui->externalDownArguments->setText(settings.value("ExternalManagerArguments", "").toString());
+    ui->externalDownArguments->setText(settings.value(QSL("ExternalManagerArguments"), QSL("")).toString());
 
     connect(ui->useExternalDownManager, &QAbstractButton::toggled, this, &Preferences::useExternalDownManagerChanged);
 
@@ -362,7 +362,7 @@ Preferences::Preferences(BrowserWindow* window)
     settings.endGroup();
 
     //FONTS
-    settings.beginGroup("Browser-Fonts");
+    settings.beginGroup(QSL("Browser-Fonts"));
     QWebEngineSettings* webSettings = mApp->webSettings();
     auto defaultFont = [&](QWebEngineSettings::FontFamily font) -> const QString {
         const QString family = webSettings->fontFamily(font);
@@ -377,33 +377,33 @@ Preferences::Preferences(BrowserWindow* window)
             return QFontDatabase::systemFont(QFontDatabase::GeneralFont).family();
         }
     };
-    ui->fontStandard->setCurrentFont(QFont(settings.value("StandardFont", defaultFont(QWebEngineSettings::StandardFont)).toString()));
+    ui->fontStandard->setCurrentFont(QFont(settings.value(QSL("StandardFont"), defaultFont(QWebEngineSettings::StandardFont)).toString()));
-    ui->fontCursive->setCurrentFont(QFont(settings.value("CursiveFont", defaultFont(QWebEngineSettings::CursiveFont)).toString()));
+    ui->fontCursive->setCurrentFont(QFont(settings.value(QSL("CursiveFont"), defaultFont(QWebEngineSettings::CursiveFont)).toString()));
-    ui->fontFantasy->setCurrentFont(QFont(settings.value("FantasyFont", defaultFont(QWebEngineSettings::FantasyFont)).toString()));
+    ui->fontFantasy->setCurrentFont(QFont(settings.value(QSL("FantasyFont"), defaultFont(QWebEngineSettings::FantasyFont)).toString()));
-    ui->fontFixed->setCurrentFont(QFont(settings.value("FixedFont", defaultFont(QWebEngineSettings::FixedFont)).toString()));
+    ui->fontFixed->setCurrentFont(QFont(settings.value(QSL("FixedFont"), defaultFont(QWebEngineSettings::FixedFont)).toString()));
-    ui->fontSansSerif->setCurrentFont(QFont(settings.value("SansSerifFont", defaultFont(QWebEngineSettings::SansSerifFont)).toString()));
+    ui->fontSansSerif->setCurrentFont(QFont(settings.value(QSL("SansSerifFont"), defaultFont(QWebEngineSettings::SansSerifFont)).toString()));
-    ui->fontSerif->setCurrentFont(QFont(settings.value("SerifFont", defaultFont(QWebEngineSettings::SerifFont)).toString()));
+    ui->fontSerif->setCurrentFont(QFont(settings.value(QSL("SerifFont"), defaultFont(QWebEngineSettings::SerifFont)).toString()));
-    ui->sizeDefault->setValue(settings.value("DefaultFontSize", webSettings->fontSize(QWebEngineSettings::DefaultFontSize)).toInt());
+    ui->sizeDefault->setValue(settings.value(QSL("DefaultFontSize"), webSettings->fontSize(QWebEngineSettings::DefaultFontSize)).toInt());
-    ui->sizeFixed->setValue(settings.value("FixedFontSize", webSettings->fontSize(QWebEngineSettings::DefaultFixedFontSize)).toInt());
+    ui->sizeFixed->setValue(settings.value(QSL("FixedFontSize"), webSettings->fontSize(QWebEngineSettings::DefaultFixedFontSize)).toInt());
-    ui->sizeMinimum->setValue(settings.value("MinimumFontSize", webSettings->fontSize(QWebEngineSettings::MinimumFontSize)).toInt());
+    ui->sizeMinimum->setValue(settings.value(QSL("MinimumFontSize"), webSettings->fontSize(QWebEngineSettings::MinimumFontSize)).toInt());
-    ui->sizeMinimumLogical->setValue(settings.value("MinimumLogicalFontSize", webSettings->fontSize(QWebEngineSettings::MinimumLogicalFontSize)).toInt());
+    ui->sizeMinimumLogical->setValue(settings.value(QSL("MinimumLogicalFontSize"), webSettings->fontSize(QWebEngineSettings::MinimumLogicalFontSize)).toInt());
     settings.endGroup();
 
     //KEYBOARD SHORTCUTS
-    settings.beginGroup("Shortcuts");
+    settings.beginGroup(QSL("Shortcuts"));
-    ui->switchTabsAlt->setChecked(settings.value("useTabNumberShortcuts", true).toBool());
+    ui->switchTabsAlt->setChecked(settings.value(QSL("useTabNumberShortcuts"), true).toBool());
-    ui->loadSpeedDialsCtrl->setChecked(settings.value("useSpeedDialNumberShortcuts", true).toBool());
+    ui->loadSpeedDialsCtrl->setChecked(settings.value(QSL("useSpeedDialNumberShortcuts"), true).toBool());
-    ui->singleKeyShortcuts->setChecked(settings.value("useSingleKeyShortcuts", false).toBool());
+    ui->singleKeyShortcuts->setChecked(settings.value(QSL("useSingleKeyShortcuts"), false).toBool());
     settings.endGroup();
 
     //NOTIFICATIONS
     ui->useNativeSystemNotifications->setEnabled(mApp->desktopNotifications()->supportsNativeNotifications());
 
     DesktopNotificationsFactory::Type notifyType;
-    settings.beginGroup("Notifications");
+    settings.beginGroup(QSL("Notifications"));
-    ui->notificationTimeout->setValue(settings.value("Timeout", 6000).toInt() / 1000);
+    ui->notificationTimeout->setValue(settings.value(QSL("Timeout"), 6000).toInt() / 1000);
 #if defined(Q_OS_UNIX) && !defined(DISABLE_DBUS)
-    notifyType = settings.value("UseNativeDesktop", true).toBool() ? DesktopNotificationsFactory::DesktopNative : DesktopNotificationsFactory::PopupWidget;
+    notifyType = settings.value(QSL("UseNativeDesktop"), true).toBool() ? DesktopNotificationsFactory::DesktopNative : DesktopNotificationsFactory::PopupWidget;
 #else
     notifyType = DesktopNotificationsFactory::PopupWidget;
 #endif
@@ -416,8 +416,8 @@ Preferences::Preferences(BrowserWindow* window)
 
     connect(ui->notificationPreview, &QPushButton::clicked, this, &Preferences::showNotificationPreview);
 
-    ui->doNotUseNotifications->setChecked(!settings.value("Enabled", true).toBool());
+    ui->doNotUseNotifications->setChecked(!settings.value(QSL("Enabled"), true).toBool());
-    m_notifPosition = settings.value("Position", QPoint(10, 10)).toPoint();
+    m_notifPosition = settings.value(QSL("Position"), QPoint(10, 10)).toPoint();
     settings.endGroup();
 
     //SPELLCHECK
@@ -488,8 +488,8 @@ Preferences::Preferences(BrowserWindow* window)
     }
 
     // Proxy Configuration
-    settings.beginGroup("Web-Proxy");
+    settings.beginGroup(QSL("Web-Proxy"));
-    int proxyType = settings.value("ProxyType", 2).toInt();
+    int proxyType = settings.value(QSL("ProxyType"), 2).toInt();
     if (proxyType == 0) {
         ui->noProxy->setChecked(true);
     } else if (proxyType == 2) {
@@ -502,10 +502,10 @@ Preferences::Preferences(BrowserWindow* window)
         ui->proxyType->setCurrentIndex(1);
     }
 
-    ui->proxyServer->setText(settings.value("HostName", "").toString());
+    ui->proxyServer->setText(settings.value(QSL("HostName"), QSL("")).toString());
-    ui->proxyPort->setText(settings.value("Port", 8080).toString());
+    ui->proxyPort->setText(settings.value(QSL("Port"), 8080).toString());
-    ui->proxyUsername->setText(settings.value("Username", "").toString());
+    ui->proxyUsername->setText(settings.value(QSL("Username"), QSL("")).toString());
-    ui->proxyPassword->setText(settings.value("Password", "").toString());
+    ui->proxyPassword->setText(settings.value(QSL("Password"), QSL("")).toString());
     settings.endGroup();
 
     setManualProxyConfigurationEnabled(ui->manualProxy->isChecked());
@@ -543,7 +543,7 @@ Preferences::Preferences(BrowserWindow* window)
     restoreGeometry(settings.value(QSL("Geometry")).toByteArray());
     settings.endGroup();
 
-    QzTools::setWmClass("Preferences", this);
+    QzTools::setWmClass(QSL("Preferences"), this);
 }
 
 void Preferences::allowPluginsToggled(bool checked)
@@ -553,7 +553,7 @@ void Preferences::allowPluginsToggled(bool checked)
 
 void Preferences::chooseExternalDownloadManager()
 {
-    QString path = QzTools::getOpenFileName("Preferences-ExternalDownloadManager", this, tr("Choose executable location..."), QDir::homePath());
+    QString path = QzTools::getOpenFileName(QSL("Preferences-ExternalDownloadManager"), this, tr("Choose executable location..."), QDir::homePath());
     if (path.isEmpty()) {
         return;
     }
@@ -569,7 +569,7 @@ void Preferences::showStackedPage(QListWidgetItem* item)
 
     int index = ui->listWidget->currentRow();
 
-    ui->caption->setText("<b>" + item->text() + "</b>");
+    ui->caption->setText(QSL("<b>") + item->text() + QSL("</b>"));
     ui->stackedWidget->setCurrentIndex(index);
 
     if (m_notification) {
@@ -646,7 +646,7 @@ void Preferences::useActualNewTab()
 
 void Preferences::chooseDownPath()
 {
-    QString userFileName = QzTools::getExistingDirectory("Preferences-ChooseDownPath", this, tr("Choose download location..."), QDir::homePath());
+    QString userFileName = QzTools::getExistingDirectory(QSL("Preferences-ChooseDownPath"), this, tr("Choose download location..."), QDir::homePath());
     if (userFileName.isEmpty()) {
         return;
     }
@@ -660,7 +660,7 @@ void Preferences::chooseDownPath()
 
 void Preferences::chooseUserStyleClicked()
 {
-    QString file = QzTools::getOpenFileName("Preferences-UserStyle", this, tr("Choose stylesheet location..."), QDir::homePath(), "*.css");
+    QString file = QzTools::getOpenFileName(QSL("Preferences-UserStyle"), this, tr("Choose stylesheet location..."), QDir::homePath(), QSL("*.css"));
     if (file.isEmpty()) {
         return;
     }
@@ -779,7 +779,7 @@ void Preferences::afterLaunchChanged(int value)
 
 void Preferences::changeCachePathClicked()
 {
-    QString path = QzTools::getExistingDirectory("Preferences-CachePath", this, tr("Choose cache path..."), ui->cachePath->text());
+    QString path = QzTools::getExistingDirectory(QSL("Preferences-CachePath"), this, tr("Choose cache path..."), ui->cachePath->text());
     if (path.isEmpty()) {
         return;
     }
@@ -858,8 +858,8 @@ void Preferences::startProfileIndexChanged(int index)
 void Preferences::closeEvent(QCloseEvent* event)
 {
     Settings settings;
-    settings.beginGroup("Browser-View-Settings");
+    settings.beginGroup(QSL("Browser-View-Settings"));
-    settings.setValue("settingsDialogPage", ui->stackedWidget->currentIndex());
+    settings.setValue(QSL("settingsDialogPage"), ui->stackedWidget->currentIndex());
     settings.endGroup();
 
     event->accept();
@@ -871,25 +871,25 @@ void Preferences::saveSettings()
     //GENERAL URLs
     QUrl homepage = QUrl::fromUserInput(ui->homepage->text());
 
-    settings.beginGroup("Web-URL-Settings");
+    settings.beginGroup(QSL("Web-URL-Settings"));
-    settings.setValue("homepage", homepage);
+    settings.setValue(QSL("homepage"), homepage);
-    settings.setValue("afterLaunch", ui->afterLaunch->currentIndex());
+    settings.setValue(QSL("afterLaunch"), ui->afterLaunch->currentIndex());
 
     switch (ui->newTab->currentIndex()) {
     case 0:
-        settings.setValue("newTabUrl", QUrl());
+        settings.setValue(QSL("newTabUrl"), QUrl());
         break;
 
     case 1:
-        settings.setValue("newTabUrl", homepage);
+        settings.setValue(QSL("newTabUrl"), homepage);
         break;
 
     case 2:
-        settings.setValue("newTabUrl", QUrl(QSL("falkon:speeddial")));
+        settings.setValue(QSL("newTabUrl"), QUrl(QSL("falkon:speeddial")));
         break;
 
     case 3:
-        settings.setValue("newTabUrl", QUrl::fromUserInput(ui->newTabUrl->text()));
+        settings.setValue(QSL("newTabUrl"), QUrl::fromUserInput(ui->newTabUrl->text()));
         break;
 
     default:
@@ -905,121 +905,121 @@ void Preferences::saveSettings()
      */
 
     //WINDOW
-    settings.beginGroup("Browser-View-Settings");
+    settings.beginGroup(QSL("Browser-View-Settings"));
-    settings.setValue("showStatusBar", ui->showStatusbar->isChecked());
+    settings.setValue(QSL("showStatusBar"), ui->showStatusbar->isChecked());
-    settings.setValue("instantBookmarksToolbar", ui->instantBookmarksToolbar->isChecked());
+    settings.setValue(QSL("instantBookmarksToolbar"), ui->instantBookmarksToolbar->isChecked());
-    settings.setValue("showBookmarksToolbar", ui->showBookmarksToolbar->isChecked());
+    settings.setValue(QSL("showBookmarksToolbar"), ui->showBookmarksToolbar->isChecked());
-    settings.setValue("showNavigationToolbar", ui->showNavigationToolbar->isChecked());
+    settings.setValue(QSL("showNavigationToolbar"), ui->showNavigationToolbar->isChecked());
     settings.endGroup();
 
     //TABS
-    settings.beginGroup("Browser-Tabs-Settings");
+    settings.beginGroup(QSL("Browser-Tabs-Settings"));
-    settings.setValue("hideTabsWithOneTab", ui->hideTabsOnTab->isChecked());
+    settings.setValue(QSL("hideTabsWithOneTab"), ui->hideTabsOnTab->isChecked());
-    settings.setValue("ActivateLastTabWhenClosingActual", ui->activateLastTab->isChecked());
+    settings.setValue(QSL("ActivateLastTabWhenClosingActual"), ui->activateLastTab->isChecked());
-    settings.setValue("newTabAfterActive", ui->openNewTabAfterActive->isChecked());
+    settings.setValue(QSL("newTabAfterActive"), ui->openNewTabAfterActive->isChecked());
-    settings.setValue("newEmptyTabAfterActive", ui->openNewEmptyTabAfterActive->isChecked());
+    settings.setValue(QSL("newEmptyTabAfterActive"), ui->openNewEmptyTabAfterActive->isChecked());
-    settings.setValue("OpenPopupsInTabs", ui->openPopupsInTabs->isChecked());
+    settings.setValue(QSL("OpenPopupsInTabs"), ui->openPopupsInTabs->isChecked());
-    settings.setValue("AlwaysSwitchTabsWithWheel", ui->alwaysSwitchTabsWithWheel->isChecked());
+    settings.setValue(QSL("AlwaysSwitchTabsWithWheel"), ui->alwaysSwitchTabsWithWheel->isChecked());
-    settings.setValue("OpenNewTabsSelected", ui->switchToNewTabs->isChecked());
+    settings.setValue(QSL("OpenNewTabsSelected"), ui->switchToNewTabs->isChecked());
-    settings.setValue("dontCloseWithOneTab", ui->dontCloseOnLastTab->isChecked());
+    settings.setValue(QSL("dontCloseWithOneTab"), ui->dontCloseOnLastTab->isChecked());
-    settings.setValue("AskOnClosing", ui->askWhenClosingMultipleTabs->isChecked());
+    settings.setValue(QSL("AskOnClosing"), ui->askWhenClosingMultipleTabs->isChecked());
-    settings.setValue("showClosedTabsButton", ui->showClosedTabsButton->isChecked());
+    settings.setValue(QSL("showClosedTabsButton"), ui->showClosedTabsButton->isChecked());
-    settings.setValue("showCloseOnInactiveTabs", ui->showCloseOnInactive->currentIndex());
+    settings.setValue(QSL("showCloseOnInactiveTabs"), ui->showCloseOnInactive->currentIndex());
     settings.endGroup();
 
     //DOWNLOADS
-    settings.beginGroup("DownloadManager");
+    settings.beginGroup(QSL("DownloadManager"));
     if (ui->askEverytime->isChecked()) {
-        settings.setValue("defaultDownloadPath", "");
+        settings.setValue(QSL("defaultDownloadPath"), QSL(""));
     }
     else {
-        settings.setValue("defaultDownloadPath", ui->downLoc->text());
+        settings.setValue(QSL("defaultDownloadPath"), ui->downLoc->text());
     }
-    settings.setValue("CloseManagerOnFinish", ui->closeDownManOnFinish->isChecked());
+    settings.setValue(QSL("CloseManagerOnFinish"), ui->closeDownManOnFinish->isChecked());
-    settings.setValue("UseExternalManager", ui->useExternalDownManager->isChecked());
+    settings.setValue(QSL("UseExternalManager"), ui->useExternalDownManager->isChecked());
-    settings.setValue("ExternalManagerExecutable", ui->externalDownExecutable->text());
+    settings.setValue(QSL("ExternalManagerExecutable"), ui->externalDownExecutable->text());
-    settings.setValue("ExternalManagerArguments", ui->externalDownArguments->text());
+    settings.setValue(QSL("ExternalManagerArguments"), ui->externalDownArguments->text());
 
     settings.endGroup();
 
     //FONTS
-    settings.beginGroup("Browser-Fonts");
+    settings.beginGroup(QSL("Browser-Fonts"));
-    settings.setValue("StandardFont", ui->fontStandard->currentFont().family());
+    settings.setValue(QSL("StandardFont"), ui->fontStandard->currentFont().family());
-    settings.setValue("CursiveFont", ui->fontCursive->currentFont().family());
+    settings.setValue(QSL("CursiveFont"), ui->fontCursive->currentFont().family());
-    settings.setValue("FantasyFont", ui->fontFantasy->currentFont().family());
+    settings.setValue(QSL("FantasyFont"), ui->fontFantasy->currentFont().family());
-    settings.setValue("FixedFont", ui->fontFixed->currentFont().family());
+    settings.setValue(QSL("FixedFont"), ui->fontFixed->currentFont().family());
-    settings.setValue("SansSerifFont", ui->fontSansSerif->currentFont().family());
+    settings.setValue(QSL("SansSerifFont"), ui->fontSansSerif->currentFont().family());
-    settings.setValue("SerifFont", ui->fontSerif->currentFont().family());
+    settings.setValue(QSL("SerifFont"), ui->fontSerif->currentFont().family());
 
-    settings.setValue("DefaultFontSize", ui->sizeDefault->value());
+    settings.setValue(QSL("DefaultFontSize"), ui->sizeDefault->value());
-    settings.setValue("FixedFontSize", ui->sizeFixed->value());
+    settings.setValue(QSL("FixedFontSize"), ui->sizeFixed->value());
-    settings.setValue("MinimumFontSize", ui->sizeMinimum->value());
+    settings.setValue(QSL("MinimumFontSize"), ui->sizeMinimum->value());
-    settings.setValue("MinimumLogicalFontSize", ui->sizeMinimumLogical->value());
+    settings.setValue(QSL("MinimumLogicalFontSize"), ui->sizeMinimumLogical->value());
     settings.endGroup();
 
     //KEYBOARD SHORTCUTS
-    settings.beginGroup("Shortcuts");
+    settings.beginGroup(QSL("Shortcuts"));
-    settings.setValue("useTabNumberShortcuts", ui->switchTabsAlt->isChecked());
+    settings.setValue(QSL("useTabNumberShortcuts"), ui->switchTabsAlt->isChecked());
-    settings.setValue("useSpeedDialNumberShortcuts", ui->loadSpeedDialsCtrl->isChecked());
+    settings.setValue(QSL("useSpeedDialNumberShortcuts"), ui->loadSpeedDialsCtrl->isChecked());
-    settings.setValue("useSingleKeyShortcuts", ui->singleKeyShortcuts->isChecked());
+    settings.setValue(QSL("useSingleKeyShortcuts"), ui->singleKeyShortcuts->isChecked());
     settings.endGroup();
 
     //BROWSING
-    settings.beginGroup("Web-Browser-Settings");
+    settings.beginGroup(QSL("Web-Browser-Settings"));
-    settings.setValue("allowPlugins", ui->allowPlugins->isChecked());
+    settings.setValue(QSL("allowPlugins"), ui->allowPlugins->isChecked());
-    settings.setValue("allowJavaScript", ui->allowJavaScript->isChecked());
+    settings.setValue(QSL("allowJavaScript"), ui->allowJavaScript->isChecked());
-    settings.setValue("IncludeLinkInFocusChain", ui->linksInFocusChain->isChecked());
+    settings.setValue(QSL("IncludeLinkInFocusChain"), ui->linksInFocusChain->isChecked());
-    settings.setValue("SpatialNavigation", ui->spatialNavigation->isChecked());
+    settings.setValue(QSL("SpatialNavigation"), ui->spatialNavigation->isChecked());
-    settings.setValue("AnimateScrolling", ui->animateScrolling->isChecked());
+    settings.setValue(QSL("AnimateScrolling"), ui->animateScrolling->isChecked());
-    settings.setValue("wheelScrollLines", ui->wheelScroll->value());
+    settings.setValue(QSL("wheelScrollLines"), ui->wheelScroll->value());
-    settings.setValue("DoNotTrack", ui->doNotTrack->isChecked());
+    settings.setValue(QSL("DoNotTrack"), ui->doNotTrack->isChecked());
-    settings.setValue("CheckUpdates", ui->checkUpdates->isChecked());
+    settings.setValue(QSL("CheckUpdates"), ui->checkUpdates->isChecked());
-    settings.setValue("LoadTabsOnActivation", ui->dontLoadTabsUntilSelected->isChecked());
+    settings.setValue(QSL("LoadTabsOnActivation"), ui->dontLoadTabsUntilSelected->isChecked());
-    settings.setValue("DefaultZoomLevel", ui->defaultZoomLevel->currentIndex());
+    settings.setValue(QSL("DefaultZoomLevel"), ui->defaultZoomLevel->currentIndex());
-    settings.setValue("XSSAuditing", ui->xssAuditing->isChecked());
+    settings.setValue(QSL("XSSAuditing"), ui->xssAuditing->isChecked());
-    settings.setValue("PrintElementBackground", ui->printEBackground->isChecked());
+    settings.setValue(QSL("PrintElementBackground"), ui->printEBackground->isChecked());
-    settings.setValue("closeAppWithCtrlQ", ui->closeAppWithCtrlQ->isChecked());
+    settings.setValue(QSL("closeAppWithCtrlQ"), ui->closeAppWithCtrlQ->isChecked());
-    settings.setValue("UseNativeScrollbars", ui->useNativeScrollbars->isChecked());
+    settings.setValue(QSL("UseNativeScrollbars"), ui->useNativeScrollbars->isChecked());
-    settings.setValue("DisableVideoAutoPlay", ui->disableVideoAutoPlay->isChecked());
+    settings.setValue(QSL("DisableVideoAutoPlay"), ui->disableVideoAutoPlay->isChecked());
-    settings.setValue("WebRTCPublicIpOnly", ui->webRTCPublicIpOnly->isChecked());
+    settings.setValue(QSL("WebRTCPublicIpOnly"), ui->webRTCPublicIpOnly->isChecked());
-    settings.setValue("DNSPrefetch", ui->dnsPrefetch->isChecked());
+    settings.setValue(QSL("DNSPrefetch"), ui->dnsPrefetch->isChecked());
-    settings.setValue("intPDFViewer", ui->intPDFViewer->isChecked());
+    settings.setValue(QSL("intPDFViewer"), ui->intPDFViewer->isChecked());
-    settings.setValue("screenCaptureEnabled", ui->screenCaptureEnabled->isChecked());
+    settings.setValue(QSL("screenCaptureEnabled"), ui->screenCaptureEnabled->isChecked());
-    settings.setValue("hardwareAccel", ui->hardwareAccel->isChecked());
+    settings.setValue(QSL("hardwareAccel"), ui->hardwareAccel->isChecked());
 #ifdef Q_OS_WIN
-    settings.setValue("CheckDefaultBrowser", ui->checkDefaultBrowser->isChecked());
+    settings.setValue(QSL("CheckDefaultBrowser"), ui->checkDefaultBrowser->isChecked());
 #endif
     //Cache
-    settings.setValue("AllowLocalCache", ui->allowCache->isChecked());
+    settings.setValue(QSL("AllowLocalCache"), ui->allowCache->isChecked());
-    settings.setValue("deleteCacheOnClose", ui->removeCache->isChecked());
+    settings.setValue(QSL("deleteCacheOnClose"), ui->removeCache->isChecked());
-    settings.setValue("LocalCacheSize", ui->cacheMB->value());
+    settings.setValue(QSL("LocalCacheSize"), ui->cacheMB->value());
-    settings.setValue("CachePath", ui->cachePath->text());
+    settings.setValue(QSL("CachePath"), ui->cachePath->text());
     //CSS Style
-    settings.setValue("userStyleSheet", ui->userStyleSheet->text());
+    settings.setValue(QSL("userStyleSheet"), ui->userStyleSheet->text());
 
     //PASSWORD MANAGER
-    settings.setValue("SavePasswordsOnSites", ui->allowPassManager->isChecked());
+    settings.setValue(QSL("SavePasswordsOnSites"), ui->allowPassManager->isChecked());
-    settings.setValue("AutoCompletePasswords", ui->autoCompletePasswords->isChecked());
+    settings.setValue(QSL("AutoCompletePasswords"), ui->autoCompletePasswords->isChecked());
 
     //PRIVACY
     //Web storage
-    settings.setValue("allowHistory", ui->saveHistory->isChecked());
+    settings.setValue(QSL("allowHistory"), ui->saveHistory->isChecked());
-    settings.setValue("deleteHistoryOnClose", ui->deleteHistoryOnClose->isChecked());
+    settings.setValue(QSL("deleteHistoryOnClose"), ui->deleteHistoryOnClose->isChecked());
-    settings.setValue("HTML5StorageEnabled", ui->html5storage->isChecked());
+    settings.setValue(QSL("HTML5StorageEnabled"), ui->html5storage->isChecked());
-    settings.setValue("deleteHTML5StorageOnClose", ui->deleteHtml5storageOnClose->isChecked());
+    settings.setValue(QSL("deleteHTML5StorageOnClose"), ui->deleteHtml5storageOnClose->isChecked());
     settings.endGroup();
 
     //NOTIFICATIONS
-    settings.beginGroup("Notifications");
+    settings.beginGroup(QSL("Notifications"));
-    settings.setValue("Timeout", ui->notificationTimeout->value() * 1000);
+    settings.setValue(QSL("Timeout"), ui->notificationTimeout->value() * 1000);
-    settings.setValue("Enabled", !ui->doNotUseNotifications->isChecked());
+    settings.setValue(QSL("Enabled"), !ui->doNotUseNotifications->isChecked());
-    settings.setValue("UseNativeDesktop", ui->useNativeSystemNotifications->isChecked());
+    settings.setValue(QSL("UseNativeDesktop"), ui->useNativeSystemNotifications->isChecked());
-    settings.setValue("Position", m_notification.data() ? m_notification.data()->pos() : m_notifPosition);
+    settings.setValue(QSL("Position"), m_notification.data() ? m_notification.data()->pos() : m_notifPosition);
     settings.endGroup();
 
     //SPELLCHECK
     settings.beginGroup(QSL("SpellCheck"));
-    settings.setValue("Enabled", ui->spellcheckEnabled->isChecked());
+    settings.setValue(QSL("Enabled"), ui->spellcheckEnabled->isChecked());
     QStringList languages;
     for (int i = 0; i < ui->spellcheckLanguages->count(); ++i) {
         QListWidgetItem *item = ui->spellcheckLanguages->item(i);
@@ -1027,30 +1027,30 @@ void Preferences::saveSettings()
             languages.append(item->data(Qt::UserRole).toString());
         }
     }
-    settings.setValue("Languages", languages);
+    settings.setValue(QSL("Languages"), languages);
     settings.endGroup();
 
     //OTHER
     //AddressBar
-    settings.beginGroup("AddressBar");
+    settings.beginGroup(QSL("AddressBar"));
-    settings.setValue("showSuggestions", ui->addressbarCompletion->currentIndex());
+    settings.setValue(QSL("showSuggestions"), ui->addressbarCompletion->currentIndex());
-    settings.setValue("useInlineCompletion", ui->useInlineCompletion->isChecked());
+    settings.setValue(QSL("useInlineCompletion"), ui->useInlineCompletion->isChecked());
-    settings.setValue("alwaysShowGoIcon", ui->alwaysShowGoIcon->isChecked());
+    settings.setValue(QSL("alwaysShowGoIcon"), ui->alwaysShowGoIcon->isChecked());
-    settings.setValue("showZoomLabel", ui->showZoomLabel->isChecked());
+    settings.setValue(QSL("showZoomLabel"), ui->showZoomLabel->isChecked());
-    settings.setValue("showSwitchTab", ui->completionShowSwitchTab->isChecked());
+    settings.setValue(QSL("showSwitchTab"), ui->completionShowSwitchTab->isChecked());
-    settings.setValue("SelectAllTextOnDoubleClick", ui->selectAllOnFocus->isChecked());
+    settings.setValue(QSL("SelectAllTextOnDoubleClick"), ui->selectAllOnFocus->isChecked());
-    settings.setValue("SelectAllTextOnClick", ui->selectAllOnClick->isChecked());
+    settings.setValue(QSL("SelectAllTextOnClick"), ui->selectAllOnClick->isChecked());
-    settings.setValue("CompletionPopupExpandToWindow", ui->completionPopupExpandToWindow->isChecked());
+    settings.setValue(QSL("CompletionPopupExpandToWindow"), ui->completionPopupExpandToWindow->isChecked());
-    settings.setValue("ShowLoadingProgress", ui->showLoadingInAddressBar->isChecked());
+    settings.setValue(QSL("ShowLoadingProgress"), ui->showLoadingInAddressBar->isChecked());
-    settings.setValue("ProgressStyle", ui->progressStyleSelector->currentIndex());
+    settings.setValue(QSL("ProgressStyle"), ui->progressStyleSelector->currentIndex());
-    settings.setValue("UseCustomProgressColor", ui->checkBoxCustomProgressColor->isChecked());
+    settings.setValue(QSL("UseCustomProgressColor"), ui->checkBoxCustomProgressColor->isChecked());
-    settings.setValue("CustomProgressColor", ui->customColorToolButton->property("ProgressColor").value<QColor>());
+    settings.setValue(QSL("CustomProgressColor"), ui->customColorToolButton->property("ProgressColor").value<QColor>());
     settings.endGroup();
 
-    settings.beginGroup("SearchEngines");
+    settings.beginGroup(QSL("SearchEngines"));
-    settings.setValue("SearchFromAddressBar", ui->searchFromAddressBar->isChecked());
+    settings.setValue(QSL("SearchFromAddressBar"), ui->searchFromAddressBar->isChecked());
-    settings.setValue("SearchWithDefaultEngine", ui->searchWithDefaultEngine->isChecked());
+    settings.setValue(QSL("SearchWithDefaultEngine"), ui->searchWithDefaultEngine->isChecked());
-    settings.setValue("showSearchSuggestions", ui->showABSearchSuggestions->isChecked());
+    settings.setValue(QSL("showSearchSuggestions"), ui->showABSearchSuggestions->isChecked());
     settings.endGroup();
 
     //Proxy Configuration
@@ -1065,12 +1065,12 @@ void Preferences::saveSettings()
         proxyType = 4;
     }
 
-    settings.beginGroup("Web-Proxy");
+    settings.beginGroup(QSL("Web-Proxy"));
-    settings.setValue("ProxyType", proxyType);
+    settings.setValue(QSL("ProxyType"), proxyType);
-    settings.setValue("HostName", ui->proxyServer->text());
+    settings.setValue(QSL("HostName"), ui->proxyServer->text());
-    settings.setValue("Port", ui->proxyPort->text().toInt());
+    settings.setValue(QSL("Port"), ui->proxyPort->text().toInt());
-    settings.setValue("Username", ui->proxyUsername->text());
+    settings.setValue(QSL("Username"), ui->proxyUsername->text());
-    settings.setValue("Password", ui->proxyPassword->text());
+    settings.setValue(QSL("Password"), ui->proxyPassword->text());
     settings.endGroup();
 
     ProfileManager::setStartingProfile(ui->startProfile->currentText());

src/lib/preferences/thememanager.cpp

@@ -40,8 +40,8 @@ ThemeManager::ThemeManager(QWidget* parent, Preferences* preferences)
     ui->remove->setIcon(QIcon::fromTheme(QSL("edit-delete")));
 
     Settings settings;
-    settings.beginGroup("Themes");
+    settings.beginGroup(QSL("Themes"));
-    m_activeTheme = settings.value("activeTheme", DEFAULT_THEME_NAME).toString();
+    m_activeTheme = settings.value(QSL("activeTheme"), DEFAULT_THEME_NAME).toString();
     settings.endGroup();
 
     const QStringList themePaths = DataPaths::allPaths(DataPaths::Themes);
@@ -129,7 +129,7 @@ ThemeManager::Theme ThemeManager::parseTheme(const QString &path, const QString
     Theme info;
     info.isValid = false;
 
-    if (!QFile(path + QStringLiteral("main.css")).exists() || !QFile(path + "metadata.desktop").exists()) {
+    if (!QFile(path + QStringLiteral("main.css")).exists() || !QFile(path + QSL("metadata.desktop")).exists()) {
         info.isValid = false;
         return info;
     }
@@ -171,8 +171,8 @@ void ThemeManager::save()
     }
 
     Settings settings;
-    settings.beginGroup("Themes");
+    settings.beginGroup(QSL("Themes"));
-    settings.setValue("activeTheme", currentItem->data(Qt::UserRole));
+    settings.setValue(QSL("activeTheme"), currentItem->data(Qt::UserRole));
     settings.endGroup();
 }
 

src/lib/preferences/useragentdialog.cpp

@@ -49,10 +49,10 @@ UserAgentDialog::UserAgentDialog(QWidget* parent)
     QRegularExpression chromeRx(QSL("Chrome/([^\\s]+)"));
     const QString chromeVersion = chromeRx.match(m_manager->defaultUserAgent()).captured(1);
 
-    m_knownUserAgents << QString("Opera/9.80 (%1) Presto/2.12.388 Version/12.16").arg(os)
+    m_knownUserAgents << QSL("Opera/9.80 (%1) Presto/2.12.388 Version/12.16").arg(os)
-                      << QString("Mozilla/5.0 (%1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/%2 Safari/537.36").arg(os, chromeVersion)
+                      << QSL("Mozilla/5.0 (%1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/%2 Safari/537.36").arg(os, chromeVersion)
-                      << QString("Mozilla/5.0 (%1) AppleWebKit/602.3.12 (KHTML, like Gecko) Version/10.0.2 Safari/602.3.12").arg(os)
+                      << QSL("Mozilla/5.0 (%1) AppleWebKit/602.3.12 (KHTML, like Gecko) Version/10.0.2 Safari/602.3.12").arg(os)
-                      << QString("Mozilla/5.0 (%1; rv:102.0) Gecko/20100101 Firefox/102.0").arg(os);
+                      << QSL("Mozilla/5.0 (%1; rv:102.0) Gecko/20100101 Firefox/102.0").arg(os);
 
     ui->globalComboBox->addItems(m_knownUserAgents);
 
@@ -167,14 +167,14 @@ void UserAgentDialog::accept()
     }
 
     Settings settings;
-    settings.beginGroup("Web-Browser-Settings");
+    settings.beginGroup(QSL("Web-Browser-Settings"));
-    settings.setValue("UserAgent", globalUserAgent);
+    settings.setValue(QSL("UserAgent"), globalUserAgent);
     settings.endGroup();
 
-    settings.beginGroup("User-Agent-Settings");
+    settings.beginGroup(QSL("User-Agent-Settings"));
-    settings.setValue("UsePerDomainUA", ui->changePerSite->isChecked());
+    settings.setValue(QSL("UsePerDomainUA"), ui->changePerSite->isChecked());
-    settings.setValue("DomainList", domainList);
+    settings.setValue(QSL("DomainList"), domainList);
-    settings.setValue("UserAgentsList", userAgentsList);
+    settings.setValue(QSL("UserAgentsList"), userAgentsList);
     settings.endGroup();
 
     m_manager->loadSettings();

src/lib/session/sessionmanager.cpp

@@ -132,7 +132,7 @@ void SessionManager::renameSession(QString sessionFilePath, SessionManager::Sess
     if (!ok)
         return;
 
-    const QString newSessionPath = QString("%1/%2.dat").arg(DataPaths::path(DataPaths::Sessions), newName);
+    const QString newSessionPath = QSL("%1/%2.dat").arg(DataPaths::path(DataPaths::Sessions), newName);
     if (QFile::exists(newSessionPath)) {
         QMessageBox::information(mApp->activeWindow(), tr("Error!"), tr("The session file \"%1\" exists. Please enter another name.").arg(newName));
         renameSession(sessionFilePath, flags);
@@ -161,12 +161,12 @@ void SessionManager::saveSession()
     bool ok;
     QString sessionName = QInputDialog::getText(mApp->activeWindow(), tr("Save Session"),
                                          tr("Please enter a name to save session:"), QLineEdit::Normal,
-                                         tr("Saved Session (%1)").arg(QDateTime::currentDateTime().toString("dd MMM yyyy HH-mm-ss")), &ok);
+                                         tr("Saved Session (%1)").arg(QDateTime::currentDateTime().toString(QSL("dd MMM yyyy HH-mm-ss"))), &ok);
 
     if (!ok)
         return;
 
-    const QString filePath = QString("%1/%2.dat").arg(DataPaths::path(DataPaths::Sessions), sessionName);
+    const QString filePath = QSL("%1/%2.dat").arg(DataPaths::path(DataPaths::Sessions), sessionName);
     if (QFile::exists(filePath)) {
         QMessageBox::information(mApp->activeWindow(), tr("Error!"), tr("The session file \"%1\" exists. Please enter another name.").arg(sessionName));
         saveSession();
@@ -209,7 +209,7 @@ void SessionManager::newSession()
     bool ok;
     QString sessionName = QInputDialog::getText(mApp->activeWindow(), tr("New Session"),
                                          tr("Please enter a name to create new session:"), QLineEdit::Normal,
-                                         tr("New Session (%1)").arg(QDateTime::currentDateTime().toString("dd MMM yyyy HH-mm-ss")), &ok);
+                                         tr("New Session (%1)").arg(QDateTime::currentDateTime().toString(QSL("dd MMM yyyy HH-mm-ss"))), &ok);
 
     if (!ok)
         return;
@@ -312,8 +312,8 @@ void SessionManager::loadSettings()
     QDir sessionsDir(DataPaths::path(DataPaths::Sessions));
 
     Settings settings;
-    settings.beginGroup("Web-Browser-Settings");
+    settings.beginGroup(QSL("Web-Browser-Settings"));
-    m_lastActiveSessionPath = settings.value("lastActiveSessionPath", defaultSessionPath()).toString();
+    m_lastActiveSessionPath = settings.value(QSL("lastActiveSessionPath"), defaultSessionPath()).toString();
     settings.endGroup();
 
     if (QDir::isRelativePath(m_lastActiveSessionPath)) {
@@ -330,8 +330,8 @@ void SessionManager::saveSettings()
     QDir sessionsDir(DataPaths::path(DataPaths::Sessions));
 
     Settings settings;
-    settings.beginGroup("Web-Browser-Settings");
+    settings.beginGroup(QSL("Web-Browser-Settings"));
-    settings.setValue("lastActiveSessionPath", sessionsDir.relativeFilePath(m_lastActiveSessionPath));
+    settings.setValue(QSL("lastActiveSessionPath"), sessionsDir.relativeFilePath(m_lastActiveSessionPath));
     settings.endGroup();
 }
 

src/lib/sidebar/bookmarkssidebar.cpp

@@ -105,7 +105,7 @@ void BookmarksSidebar::createContextMenu(const QPoint &pos)
     QAction* actNewPrivateWindow = menu.addAction(IconProvider::privateBrowsingIcon(), tr("Open in new private window"));
 
     menu.addSeparator();
-    QAction* actDelete = menu.addAction(QIcon::fromTheme("edit-delete"), tr("Delete"));
+    QAction* actDelete = menu.addAction(QIcon::fromTheme(QSL("edit-delete")), tr("Delete"));
 
     connect(actNewTab, SIGNAL(triggered()), this, SLOT(openBookmarkInNewTab()));
     connect(actNewWindow, SIGNAL(triggered()), this, SLOT(openBookmarkInNewWindow()));

src/lib/sidebar/sidebar.cpp

@@ -107,15 +107,15 @@ void SideBarManager::createMenu(QMenu* menu)
 
     QAction* act = menu->addAction(SideBar::tr("Bookmarks"), this, &SideBarManager::slotShowSideBar);
     act->setCheckable(true);
-    act->setShortcut(QKeySequence("Ctrl+Shift+B"));
+    act->setShortcut(QKeySequence(QSL("Ctrl+Shift+B")));
-    act->setData("Bookmarks");
+    act->setData(QSL("Bookmarks"));
     act->setChecked(m_activeBar == QL1S("Bookmarks"));
     group->addAction(act);
 
     act = menu->addAction(SideBar::tr("History"), this, &SideBarManager::slotShowSideBar);
     act->setCheckable(true);
-    act->setShortcut(QKeySequence("Ctrl+H"));
+    act->setShortcut(QKeySequence(QSL("Ctrl+H")));
-    act->setData("History");
+    act->setData(QSL("History"));
     act->setChecked(m_activeBar == QL1S("History"));
     group->addAction(act);
 

src/lib/tabwidget/tabbar.cpp

@@ -94,7 +94,7 @@ TabBar::TabBar(BrowserWindow* window, TabWidget* tabWidget)
     , m_activeTabWidth(0)
     , m_forceHidden(false)
 {
-    setObjectName("tabbar");
+    setObjectName(QSL("tabbar"));
     setElideMode(Qt::ElideRight);
     setFocusPolicy(Qt::NoFocus);
     setTabsClosable(false);
@@ -126,10 +126,10 @@ TabBar::TabBar(BrowserWindow* window, TabWidget* tabWidget)
 void TabBar::loadSettings()
 {
     Settings settings;
-    settings.beginGroup("Browser-Tabs-Settings");
+    settings.beginGroup(QSL("Browser-Tabs-Settings"));
-    m_hideTabBarWithOneTab = settings.value("hideTabsWithOneTab", false).toBool();
+    m_hideTabBarWithOneTab = settings.value(QSL("hideTabsWithOneTab"), false).toBool();
-    bool activateLastTab = settings.value("ActivateLastTabWhenClosingActual", false).toBool();
+    bool activateLastTab = settings.value(QSL("ActivateLastTabWhenClosingActual"), false).toBool();
-    m_showCloseOnInactive = settings.value("showCloseOnInactiveTabs", 0).toInt(0);
+    m_showCloseOnInactive = settings.value(QSL("showCloseOnInactiveTabs"), 0).toInt(0);
     settings.endGroup();
 
     setSelectionBehaviorOnRemove(activateLastTab ? QTabBar::SelectPreviousTab : QTabBar::SelectRightTab);

src/lib/tabwidget/tabcontextmenu.cpp

@@ -53,7 +53,7 @@ TabContextMenu::TabContextMenu(int index, BrowserWindow *window, Options options
 static bool canCloseTabs(const QString &settingsKey, const QString &title, const QString &description)
 {
     Settings settings;
-    bool ask = settings.value("Browser-Tabs-Settings/" + settingsKey, true).toBool();
+    bool ask = settings.value(QSL("Browser-Tabs-Settings/") + settingsKey, true).toBool();
 
     if (ask) {
         CheckBoxDialog dialog(QMessageBox::Yes | QMessageBox::No, mApp->activeWindow());
@@ -68,7 +68,7 @@ static bool canCloseTabs(const QString &settingsKey, const QString &title, const
         }
 
         if (dialog.isChecked()) {
-            settings.setValue("Browser-Tabs-Settings/" + settingsKey, false);
+            settings.setValue(QSL("Browser-Tabs-Settings/") + settingsKey, false);
         }
     }
 
@@ -120,10 +120,10 @@ void TabContextMenu::init()
             addAction(QIcon::fromTheme(QSL("view-refresh")), tr("&Reload Tab"), this, SLOT(reloadTab()));
         }
 
-        addAction(QIcon::fromTheme("tab-duplicate"), tr("&Duplicate Tab"), this, SLOT(duplicateTab()));
+        addAction(QIcon::fromTheme(QSL("tab-duplicate")), tr("&Duplicate Tab"), this, SLOT(duplicateTab()));
 
         if (m_options & ShowDetachTabAction && (mApp->windowCount() > 1 || tabWidget->count() > 1)) {
-            addAction(QIcon::fromTheme("tab-detach"), tr("D&etach Tab"), this, SLOT(detachTab()));
+            addAction(QIcon::fromTheme(QSL("tab-detach")), tr("D&etach Tab"), this, SLOT(detachTab()));
         }
 
         addAction(webTab->isPinned() ? tr("Un&pin Tab") : tr("&Pin Tab"), this, &TabContextMenu::pinTab);
@@ -148,7 +148,7 @@ void TabContextMenu::init()
         }
 
         addAction(m_window->action(QSL("Other/RestoreClosedTab")));
-        addAction(QIcon::fromTheme("window-close"), tr("Cl&ose Tab"), this, &TabContextMenu::closeTab);
+        addAction(QIcon::fromTheme(QSL("window-close")), tr("Cl&ose Tab"), this, &TabContextMenu::closeTab);
     } else {
         addAction(IconProvider::newTabIcon(), tr("&New tab"), m_window, &BrowserWindow::addTab);
         addSeparator();

src/lib/tabwidget/tabwidget.cpp

@@ -157,15 +157,15 @@ BrowserWindow *TabWidget::browserWindow() const
 void TabWidget::loadSettings()
 {
     Settings settings;
-    settings.beginGroup("Browser-Tabs-Settings");
+    settings.beginGroup(QSL("Browser-Tabs-Settings"));
-    m_dontCloseWithOneTab = settings.value("dontCloseWithOneTab", false).toBool();
+    m_dontCloseWithOneTab = settings.value(QSL("dontCloseWithOneTab"), false).toBool();
-    m_showClosedTabsButton = settings.value("showClosedTabsButton", false).toBool();
+    m_showClosedTabsButton = settings.value(QSL("showClosedTabsButton"), false).toBool();
-    m_newTabAfterActive = settings.value("newTabAfterActive", true).toBool();
+    m_newTabAfterActive = settings.value(QSL("newTabAfterActive"), true).toBool();
-    m_newEmptyTabAfterActive = settings.value("newEmptyTabAfterActive", false).toBool();
+    m_newEmptyTabAfterActive = settings.value(QSL("newEmptyTabAfterActive"), false).toBool();
     settings.endGroup();
 
-    settings.beginGroup("Web-URL-Settings");
+    settings.beginGroup(QSL("Web-URL-Settings"));
-    m_urlOnNewTab = settings.value("newTabUrl", "falkon:speeddial").toUrl();
+    m_urlOnNewTab = settings.value(QSL("newTabUrl"), QSL("falkon:speeddial")).toUrl();
     settings.endGroup();
 
     m_tabBar->loadSettings();

src/lib/tools/certificateinfowidget.cpp

@@ -323,15 +323,15 @@ CertificateInfoWidget::CertificateInfoWidget(const QSslCertificate &cert, QWidge
     ui->issuedToCN->setText(showCertInfo(cert.subjectInfo(QSslCertificate::CommonName)));
     ui->issuedToO->setText(showCertInfo(cert.subjectInfo(QSslCertificate::Organization)));
     ui->issuedToOU->setText(showCertInfo(cert.subjectInfo(QSslCertificate::OrganizationalUnitName)));
-    ui->issuedToSN->setText(showCertInfo(cert.serialNumber()));
+    ui->issuedToSN->setText(showCertInfo(QString::fromLatin1(cert.serialNumber())));
     //Issued By
     ui->issuedByCN->setText(showCertInfo(cert.issuerInfo(QSslCertificate::CommonName)));
     ui->issuedByO->setText(showCertInfo(cert.issuerInfo(QSslCertificate::Organization)));
     ui->issuedByOU->setText(showCertInfo(cert.issuerInfo(QSslCertificate::OrganizationalUnitName)));
     //Validity
     QLocale locale = QLocale::system();
-    ui->validityIssuedOn->setText(locale.toString(cert.effectiveDate(), "dddd d. MMMM yyyy"));
+    ui->validityIssuedOn->setText(locale.toString(cert.effectiveDate(), QSL("dddd d. MMMM yyyy")));
-    ui->validityExpiresOn->setText(locale.toString(cert.expiryDate(), "dddd d. MMMM yyyy"));
+    ui->validityExpiresOn->setText(locale.toString(cert.expiryDate(), QSL("dddd d. MMMM yyyy")));
 }
 
 CertificateInfoWidget::~CertificateInfoWidget()

src/lib/tools/html5permissions/html5permissionsdialog.cpp

@@ -126,31 +126,31 @@ QWebEnginePage::Feature HTML5PermissionsDialog::currentFeature() const
 void HTML5PermissionsDialog::loadSettings()
 {
     Settings settings;
-    settings.beginGroup("HTML5Notifications");
+    settings.beginGroup(QSL("HTML5Notifications"));
 
-    m_granted[QWebEnginePage::Notifications] = settings.value("NotificationsGranted", QStringList()).toStringList();
+    m_granted[QWebEnginePage::Notifications] = settings.value(QSL("NotificationsGranted"), QStringList()).toStringList();
-    m_denied[QWebEnginePage::Notifications] = settings.value("NotificationsDenied", QStringList()).toStringList();
+    m_denied[QWebEnginePage::Notifications] = settings.value(QSL("NotificationsDenied"), QStringList()).toStringList();
 
-    m_granted[QWebEnginePage::Geolocation] = settings.value("GeolocationGranted", QStringList()).toStringList();
+    m_granted[QWebEnginePage::Geolocation] = settings.value(QSL("GeolocationGranted"), QStringList()).toStringList();
-    m_denied[QWebEnginePage::Geolocation] = settings.value("GeolocationDenied", QStringList()).toStringList();
+    m_denied[QWebEnginePage::Geolocation] = settings.value(QSL("GeolocationDenied"), QStringList()).toStringList();
 
-    m_granted[QWebEnginePage::MediaAudioCapture] = settings.value("MediaAudioCaptureGranted", QStringList()).toStringList();
+    m_granted[QWebEnginePage::MediaAudioCapture] = settings.value(QSL("MediaAudioCaptureGranted"), QStringList()).toStringList();
-    m_denied[QWebEnginePage::MediaAudioCapture] = settings.value("MediaAudioCaptureDenied", QStringList()).toStringList();
+    m_denied[QWebEnginePage::MediaAudioCapture] = settings.value(QSL("MediaAudioCaptureDenied"), QStringList()).toStringList();
 
-    m_granted[QWebEnginePage::MediaVideoCapture] = settings.value("MediaVideoCaptureGranted", QStringList()).toStringList();
+    m_granted[QWebEnginePage::MediaVideoCapture] = settings.value(QSL("MediaVideoCaptureGranted"), QStringList()).toStringList();
-    m_denied[QWebEnginePage::MediaVideoCapture] = settings.value("MediaVideoCaptureDenied", QStringList()).toStringList();
+    m_denied[QWebEnginePage::MediaVideoCapture] = settings.value(QSL("MediaVideoCaptureDenied"), QStringList()).toStringList();
 
-    m_granted[QWebEnginePage::MediaAudioVideoCapture] = settings.value("MediaAudioVideoCaptureGranted", QStringList()).toStringList();
+    m_granted[QWebEnginePage::MediaAudioVideoCapture] = settings.value(QSL("MediaAudioVideoCaptureGranted"), QStringList()).toStringList();
-    m_denied[QWebEnginePage::MediaAudioVideoCapture] = settings.value("MediaAudioVideoCaptureDenied", QStringList()).toStringList();
+    m_denied[QWebEnginePage::MediaAudioVideoCapture] = settings.value(QSL("MediaAudioVideoCaptureDenied"), QStringList()).toStringList();
 
-    m_granted[QWebEnginePage::MouseLock] = settings.value("MouseLockGranted", QStringList()).toStringList();
+    m_granted[QWebEnginePage::MouseLock] = settings.value(QSL("MouseLockGranted"), QStringList()).toStringList();
-    m_denied[QWebEnginePage::MouseLock] = settings.value("MouseLockDenied", QStringList()).toStringList();
+    m_denied[QWebEnginePage::MouseLock] = settings.value(QSL("MouseLockDenied"), QStringList()).toStringList();
 
-    m_granted[QWebEnginePage::DesktopVideoCapture] = settings.value("DesktopVideoCaptureGranted", QStringList()).toStringList();
+    m_granted[QWebEnginePage::DesktopVideoCapture] = settings.value(QSL("DesktopVideoCaptureGranted"), QStringList()).toStringList();
-    m_denied[QWebEnginePage::DesktopVideoCapture] = settings.value("DesktopVideoCaptureDenied", QStringList()).toStringList();
+    m_denied[QWebEnginePage::DesktopVideoCapture] = settings.value(QSL("DesktopVideoCaptureDenied"), QStringList()).toStringList();
 
-    m_granted[QWebEnginePage::DesktopAudioVideoCapture] = settings.value("DesktopAudioVideoCaptureGranted", QStringList()).toStringList();
+    m_granted[QWebEnginePage::DesktopAudioVideoCapture] = settings.value(QSL("DesktopAudioVideoCaptureGranted"), QStringList()).toStringList();
-    m_denied[QWebEnginePage::DesktopAudioVideoCapture] = settings.value("DesktopAudioVideoCaptureDenied", QStringList()).toStringList();
+    m_denied[QWebEnginePage::DesktopAudioVideoCapture] = settings.value(QSL("DesktopAudioVideoCaptureDenied"), QStringList()).toStringList();
 
     settings.endGroup();
 }
@@ -158,31 +158,31 @@ void HTML5PermissionsDialog::loadSettings()
 void HTML5PermissionsDialog::saveSettings()
 {
     Settings settings;
-    settings.beginGroup("HTML5Notifications");
+    settings.beginGroup(QSL("HTML5Notifications"));
 
-    settings.setValue("NotificationsGranted", m_granted[QWebEnginePage::Notifications]);
+    settings.setValue(QSL("NotificationsGranted"), m_granted[QWebEnginePage::Notifications]);
-    settings.setValue("NotificationsDenied", m_denied[QWebEnginePage::Notifications]);
+    settings.setValue(QSL("NotificationsDenied"), m_denied[QWebEnginePage::Notifications]);
 
-    settings.setValue("GeolocationGranted", m_granted[QWebEnginePage::Geolocation]);
+    settings.setValue(QSL("GeolocationGranted"), m_granted[QWebEnginePage::Geolocation]);
-    settings.setValue("GeolocationDenied", m_denied[QWebEnginePage::Geolocation]);
+    settings.setValue(QSL("GeolocationDenied"), m_denied[QWebEnginePage::Geolocation]);
 
-    settings.setValue("MediaAudioCaptureGranted", m_granted[QWebEnginePage::MediaAudioCapture]);
+    settings.setValue(QSL("MediaAudioCaptureGranted"), m_granted[QWebEnginePage::MediaAudioCapture]);
-    settings.setValue("MediaAudioCaptureDenied", m_denied[QWebEnginePage::MediaAudioCapture]);
+    settings.setValue(QSL("MediaAudioCaptureDenied"), m_denied[QWebEnginePage::MediaAudioCapture]);
 
-    settings.setValue("MediaVideoCaptureGranted", m_granted[QWebEnginePage::MediaVideoCapture]);
+    settings.setValue(QSL("MediaVideoCaptureGranted"), m_granted[QWebEnginePage::MediaVideoCapture]);
-    settings.setValue("MediaVideoCaptureDenied", m_denied[QWebEnginePage::MediaVideoCapture]);
+    settings.setValue(QSL("MediaVideoCaptureDenied"), m_denied[QWebEnginePage::MediaVideoCapture]);
 
-    settings.setValue("MediaAudioVideoCaptureGranted", m_granted[QWebEnginePage::MediaAudioVideoCapture]);
+    settings.setValue(QSL("MediaAudioVideoCaptureGranted"), m_granted[QWebEnginePage::MediaAudioVideoCapture]);
-    settings.setValue("MediaAudioVideoCaptureDenied", m_denied[QWebEnginePage::MediaAudioVideoCapture]);
+    settings.setValue(QSL("MediaAudioVideoCaptureDenied"), m_denied[QWebEnginePage::MediaAudioVideoCapture]);
 
-    settings.setValue("MouseLockGranted", m_granted[QWebEnginePage::MouseLock]);
+    settings.setValue(QSL("MouseLockGranted"), m_granted[QWebEnginePage::MouseLock]);
-    settings.setValue("MouseLockDenied", m_denied[QWebEnginePage::MouseLock]);
+    settings.setValue(QSL("MouseLockDenied"), m_denied[QWebEnginePage::MouseLock]);
 
-    settings.setValue("DesktopVideoCaptureGranted", m_granted[QWebEnginePage::DesktopVideoCapture]);
+    settings.setValue(QSL("DesktopVideoCaptureGranted"), m_granted[QWebEnginePage::DesktopVideoCapture]);
-    settings.setValue("DesktopVideoCaptureDenied", m_denied[QWebEnginePage::DesktopVideoCapture]);
+    settings.setValue(QSL("DesktopVideoCaptureDenied"), m_denied[QWebEnginePage::DesktopVideoCapture]);
 
-    settings.setValue("DesktopAudioVideoCaptureGranted", m_granted[QWebEnginePage::DesktopAudioVideoCapture]);
+    settings.setValue(QSL("DesktopAudioVideoCaptureGranted"), m_granted[QWebEnginePage::DesktopAudioVideoCapture]);
-    settings.setValue("DesktopAudioVideoCaptureDenied", m_denied[QWebEnginePage::DesktopAudioVideoCapture]);
+    settings.setValue(QSL("DesktopAudioVideoCaptureDenied"), m_denied[QWebEnginePage::DesktopAudioVideoCapture]);
 
     settings.endGroup();
 

src/lib/tools/html5permissions/html5permissionsmanager.cpp

@@ -77,31 +77,31 @@ void HTML5PermissionsManager::rememberPermissions(const QUrl &origin, const QWeb
 void HTML5PermissionsManager::loadSettings()
 {
     Settings settings;
-    settings.beginGroup("HTML5Notifications");
+    settings.beginGroup(QSL("HTML5Notifications"));
 
-    m_granted[QWebEnginePage::Notifications] = settings.value("NotificationsGranted", QStringList()).toStringList();
+    m_granted[QWebEnginePage::Notifications] = settings.value(QSL("NotificationsGranted"), QStringList()).toStringList();
-    m_denied[QWebEnginePage::Notifications] = settings.value("NotificationsDenied", QStringList()).toStringList();
+    m_denied[QWebEnginePage::Notifications] = settings.value(QSL("NotificationsDenied"), QStringList()).toStringList();
 
-    m_granted[QWebEnginePage::Geolocation] = settings.value("GeolocationGranted", QStringList()).toStringList();
+    m_granted[QWebEnginePage::Geolocation] = settings.value(QSL("GeolocationGranted"), QStringList()).toStringList();
-    m_denied[QWebEnginePage::Geolocation] = settings.value("GeolocationDenied", QStringList()).toStringList();
+    m_denied[QWebEnginePage::Geolocation] = settings.value(QSL("GeolocationDenied"), QStringList()).toStringList();
 
-    m_granted[QWebEnginePage::MediaAudioCapture] = settings.value("MediaAudioCaptureGranted", QStringList()).toStringList();
+    m_granted[QWebEnginePage::MediaAudioCapture] = settings.value(QSL("MediaAudioCaptureGranted"), QStringList()).toStringList();
-    m_denied[QWebEnginePage::MediaAudioCapture] = settings.value("MediaAudioCaptureDenied", QStringList()).toStringList();
+    m_denied[QWebEnginePage::MediaAudioCapture] = settings.value(QSL("MediaAudioCaptureDenied"), QStringList()).toStringList();
 
-    m_granted[QWebEnginePage::MediaVideoCapture] = settings.value("MediaVideoCaptureGranted", QStringList()).toStringList();
+    m_granted[QWebEnginePage::MediaVideoCapture] = settings.value(QSL("MediaVideoCaptureGranted"), QStringList()).toStringList();
-    m_denied[QWebEnginePage::MediaVideoCapture] = settings.value("MediaVideoCaptureDenied", QStringList()).toStringList();
+    m_denied[QWebEnginePage::MediaVideoCapture] = settings.value(QSL("MediaVideoCaptureDenied"), QStringList()).toStringList();
 
-    m_granted[QWebEnginePage::MediaAudioVideoCapture] = settings.value("MediaAudioVideoCaptureGranted", QStringList()).toStringList();
+    m_granted[QWebEnginePage::MediaAudioVideoCapture] = settings.value(QSL("MediaAudioVideoCaptureGranted"), QStringList()).toStringList();
-    m_denied[QWebEnginePage::MediaAudioVideoCapture] = settings.value("MediaAudioVideoCaptureDenied", QStringList()).toStringList();
+    m_denied[QWebEnginePage::MediaAudioVideoCapture] = settings.value(QSL("MediaAudioVideoCaptureDenied"), QStringList()).toStringList();
 
-    m_granted[QWebEnginePage::MouseLock] = settings.value("MouseLockGranted", QStringList()).toStringList();
+    m_granted[QWebEnginePage::MouseLock] = settings.value(QSL("MouseLockGranted"), QStringList()).toStringList();
-    m_denied[QWebEnginePage::MouseLock] = settings.value("MouseLockDenied", QStringList()).toStringList();
+    m_denied[QWebEnginePage::MouseLock] = settings.value(QSL("MouseLockDenied"), QStringList()).toStringList();
 
-    m_granted[QWebEnginePage::DesktopVideoCapture] = settings.value("DesktopVideoCaptureGranted", QStringList()).toStringList();
+    m_granted[QWebEnginePage::DesktopVideoCapture] = settings.value(QSL("DesktopVideoCaptureGranted"), QStringList()).toStringList();
-    m_denied[QWebEnginePage::DesktopVideoCapture] = settings.value("DesktopVideoCaptureDenied", QStringList()).toStringList();
+    m_denied[QWebEnginePage::DesktopVideoCapture] = settings.value(QSL("DesktopVideoCaptureDenied"), QStringList()).toStringList();
 
-    m_granted[QWebEnginePage::DesktopAudioVideoCapture] = settings.value("DesktopAudioVideoCaptureGranted", QStringList()).toStringList();
+    m_granted[QWebEnginePage::DesktopAudioVideoCapture] = settings.value(QSL("DesktopAudioVideoCaptureGranted"), QStringList()).toStringList();
-    m_denied[QWebEnginePage::DesktopAudioVideoCapture] = settings.value("DesktopAudioVideoCaptureDenied", QStringList()).toStringList();
+    m_denied[QWebEnginePage::DesktopAudioVideoCapture] = settings.value(QSL("DesktopAudioVideoCaptureDenied"), QStringList()).toStringList();
 
     settings.endGroup();
 }
@@ -109,31 +109,31 @@ void HTML5PermissionsManager::loadSettings()
 void HTML5PermissionsManager::saveSettings()
 {
     Settings settings;
-    settings.beginGroup("HTML5Notifications");
+    settings.beginGroup(QSL("HTML5Notifications"));
 
-    settings.setValue("NotificationsGranted", m_granted[QWebEnginePage::Notifications]);
+    settings.setValue(QSL("NotificationsGranted"), m_granted[QWebEnginePage::Notifications]);
-    settings.setValue("NotificationsDenied", m_denied[QWebEnginePage::Notifications]);
+    settings.setValue(QSL("NotificationsDenied"), m_denied[QWebEnginePage::Notifications]);
 
-    settings.setValue("GeolocationGranted", m_granted[QWebEnginePage::Geolocation]);
+    settings.setValue(QSL("GeolocationGranted"), m_granted[QWebEnginePage::Geolocation]);
-    settings.setValue("GeolocationDenied", m_denied[QWebEnginePage::Geolocation]);
+    settings.setValue(QSL("GeolocationDenied"), m_denied[QWebEnginePage::Geolocation]);
 
-    settings.setValue("MediaAudioCaptureGranted", m_granted[QWebEnginePage::MediaAudioCapture]);
+    settings.setValue(QSL("MediaAudioCaptureGranted"), m_granted[QWebEnginePage::MediaAudioCapture]);
-    settings.setValue("MediaAudioCaptureDenied", m_denied[QWebEnginePage::MediaAudioCapture]);
+    settings.setValue(QSL("MediaAudioCaptureDenied"), m_denied[QWebEnginePage::MediaAudioCapture]);
 
-    settings.setValue("MediaVideoCaptureGranted", m_granted[QWebEnginePage::MediaVideoCapture]);
+    settings.setValue(QSL("MediaVideoCaptureGranted"), m_granted[QWebEnginePage::MediaVideoCapture]);
-    settings.setValue("MediaVideoCaptureDenied", m_denied[QWebEnginePage::MediaVideoCapture]);
+    settings.setValue(QSL("MediaVideoCaptureDenied"), m_denied[QWebEnginePage::MediaVideoCapture]);
 
-    settings.setValue("MediaAudioVideoCaptureGranted", m_granted[QWebEnginePage::MediaAudioVideoCapture]);
+    settings.setValue(QSL("MediaAudioVideoCaptureGranted"), m_granted[QWebEnginePage::MediaAudioVideoCapture]);
-    settings.setValue("MediaAudioVideoCaptureDenied", m_denied[QWebEnginePage::MediaAudioVideoCapture]);
+    settings.setValue(QSL("MediaAudioVideoCaptureDenied"), m_denied[QWebEnginePage::MediaAudioVideoCapture]);
 
-    settings.setValue("MouseLockGranted", m_granted[QWebEnginePage::MouseLock]);
+    settings.setValue(QSL("MouseLockGranted"), m_granted[QWebEnginePage::MouseLock]);
-    settings.setValue("MouseLockDenied", m_denied[QWebEnginePage::MouseLock]);
+    settings.setValue(QSL("MouseLockDenied"), m_denied[QWebEnginePage::MouseLock]);
 
-    settings.setValue("DesktopVideoCaptureGranted", m_granted[QWebEnginePage::DesktopVideoCapture]);
+    settings.setValue(QSL("DesktopVideoCaptureGranted"), m_granted[QWebEnginePage::DesktopVideoCapture]);
-    settings.setValue("DesktopVideoCaptureDenied", m_denied[QWebEnginePage::DesktopVideoCapture]);
+    settings.setValue(QSL("DesktopVideoCaptureDenied"), m_denied[QWebEnginePage::DesktopVideoCapture]);
 
-    settings.setValue("DesktopAudioVideoCaptureGranted", m_granted[QWebEnginePage::DesktopAudioVideoCapture]);
+    settings.setValue(QSL("DesktopAudioVideoCaptureGranted"), m_granted[QWebEnginePage::DesktopAudioVideoCapture]);
-    settings.setValue("DesktopAudioVideoCaptureDenied", m_denied[QWebEnginePage::DesktopAudioVideoCapture]);
+    settings.setValue(QSL("DesktopAudioVideoCaptureDenied"), m_denied[QWebEnginePage::DesktopAudioVideoCapture]);
 
     settings.endGroup();
 }

src/lib/tools/html5permissions/html5permissionsnotification.cpp

@@ -39,7 +39,7 @@ HTML5PermissionsNotification::HTML5PermissionsNotification(const QUrl &origin, Q
 
     ui->close->setIcon(IconProvider::standardIcon(QStyle::SP_DialogCloseButton));
 
-    const QString site = m_origin.host().isEmpty() ? tr("this site") : QString("<b>%1</b>").arg(m_origin.host());
+    const QString site = m_origin.host().isEmpty() ? tr("this site") : QSL("<b>%1</b>").arg(m_origin.host());
 
     switch (feature) {
     case QWebEnginePage::Notifications:

src/lib/tools/iconprovider.cpp

@@ -204,7 +204,7 @@ QImage IconProvider::imageForUrl(const QUrl &url, bool allowNull)
 
     QSqlQuery query(SqlDatabase::instance()->database());
     query.prepare(QSL("SELECT icon FROM icons WHERE url GLOB ? LIMIT 1"));
-    query.addBindValue(QString("%1*").arg(QzTools::escapeSqlGlobString(QString::fromUtf8(encodedUrl))));
+    query.addBindValue(QSL("%1*").arg(QzTools::escapeSqlGlobString(QString::fromUtf8(encodedUrl))));
     query.exec();
 
     auto *img = new QImage;
@@ -238,7 +238,7 @@ QImage IconProvider::imageForDomain(const QUrl &url, bool allowNull)
 
     QSqlQuery query(SqlDatabase::instance()->database());
     query.prepare(QSL("SELECT icon FROM icons WHERE url GLOB ? LIMIT 1"));
-    query.addBindValue(QString("*%1*").arg(QzTools::escapeSqlGlobString(url.host())));
+    query.addBindValue(QSL("*%1*").arg(QzTools::escapeSqlGlobString(url.host())));
     query.exec();
 
     if (query.next()) {

src/lib/tools/qztools.cpp

@@ -81,7 +81,7 @@ QPixmap QzTools::pixmapFromByteArray(const QByteArray &data)
 
 QUrl QzTools::pixmapToDataUrl(const QPixmap &pix)
 {
-    const QString data(pixmapToByteArray(pix));
+    const QString data(QString::fromLatin1(pixmapToByteArray(pix)));
     return data.isEmpty() ? QUrl() : QUrl(QSL("data:image/png;base64,") + data);
 }
 
@@ -325,8 +325,8 @@ QString QzTools::filterCharsFromFilename(const QString &name)
 QString QzTools::lastPathForFileDialog(const QString &dialogName, const QString &fallbackPath)
 {
     Settings settings;
-    settings.beginGroup("LastFileDialogsPaths");
+    settings.beginGroup(QSL("LastFileDialogsPaths"));
-    QString path = settings.value("FileDialogs/" + dialogName).toString();
+    QString path = settings.value(QSL("FileDialogs/") + dialogName).toString();
     settings.endGroup();
 
     return path.isEmpty() ? fallbackPath : path;
@@ -339,7 +339,7 @@ void QzTools::saveLastPathForFileDialog(const QString &dialogName, const QString
     }
 
     Settings settings;
-    settings.beginGroup("LastFileDialogsPaths");
+    settings.beginGroup(QSL("LastFileDialogsPaths"));
     settings.setValue(dialogName, path);
     settings.endGroup();
 }
@@ -498,7 +498,7 @@ QIcon QzTools::iconFromFileName(const QString &fileName)
     }
 
     QFileIconProvider iconProvider;
-    QTemporaryFile tempFile(DataPaths::path(DataPaths::Temp) + "/XXXXXX." + tempInfo.suffix());
+    QTemporaryFile tempFile(DataPaths::path(DataPaths::Temp) + QSL("/XXXXXX.") + tempInfo.suffix());
     tempFile.open();
     tempInfo.setFile(tempFile.fileName());
 
@@ -510,7 +510,7 @@ QIcon QzTools::iconFromFileName(const QString &fileName)
 
 QString QzTools::resolveFromPath(const QString &name)
 {
-    const QString path = qgetenv("PATH").trimmed();
+    const QString path = QString::fromUtf8(qgetenv("PATH").trimmed());
 
     if (path.isEmpty()) {
         return {};
@@ -620,7 +620,7 @@ bool QzTools::containsSpace(const QString &str)
 QString QzTools::getExistingDirectory(const QString &name, QWidget* parent, const QString &caption, const QString &dir, QFileDialog::Options options)
 {
     Settings settings;
-    settings.beginGroup("FileDialogPaths");
+    settings.beginGroup(QSL("FileDialogPaths"));
 
     QString lastDir = settings.value(name, dir).toString();
 
@@ -656,7 +656,7 @@ static QString getFilename(const QString &path)
 QString QzTools::getOpenFileName(const QString &name, QWidget* parent, const QString &caption, const QString &dir, const QString &filter, QString* selectedFilter, QFileDialog::Options options)
 {
     Settings settings;
-    settings.beginGroup("FileDialogPaths");
+    settings.beginGroup(QSL("FileDialogPaths"));
 
     QString lastDir = settings.value(name, QString()).toString();
     QString fileName = getFilename(dir);
@@ -681,7 +681,7 @@ QString QzTools::getOpenFileName(const QString &name, QWidget* parent, const QSt
 QStringList QzTools::getOpenFileNames(const QString &name, QWidget* parent, const QString &caption, const QString &dir, const QString &filter, QString* selectedFilter, QFileDialog::Options options)
 {
     Settings settings;
-    settings.beginGroup("FileDialogPaths");
+    settings.beginGroup(QSL("FileDialogPaths"));
 
     QString lastDir = settings.value(name, QString()).toString();
     QString fileName = getFilename(dir);
@@ -706,7 +706,7 @@ QStringList QzTools::getOpenFileNames(const QString &name, QWidget* parent, cons
 QString QzTools::getSaveFileName(const QString &name, QWidget* parent, const QString &caption, const QString &dir, const QString &filter, QString* selectedFilter, QFileDialog::Options options)
 {
     Settings settings;
-    settings.beginGroup("FileDialogPaths");
+    settings.beginGroup(QSL("FileDialogPaths"));
 
     QString lastDir = settings.value(name, QString()).toString();
     QString fileName = getFilename(dir);
@@ -770,10 +770,10 @@ QStringList QzTools::splitCommandArguments(const QString &command)
         return {};
     }
 
-    QChar SPACE(' ');
+    QChar SPACE(QL1C(' '));
-    QChar EQUAL('=');
+    QChar EQUAL(QL1C('='));
-    QChar BSLASH('\\');
+    QChar BSLASH(QL1C('\\'));
-    QChar QUOTE('"');
+    QChar QUOTE(QL1C('"'));
     QStringList r;
 
     int equalPos = -1; // Position of = in opt="value"
@@ -847,7 +847,7 @@ bool QzTools::startExternalProcess(const QString &executable, const QString &arg
     bool success = QProcess::startDetached(executable, arguments);
 
     if (!success) {
-        QString info = "<ul><li><b>%1</b>%2</li><li><b>%3</b>%4</li></ul>";
+        QString info = QSL("<ul><li><b>%1</b>%2</li><li><b>%3</b>%4</li></ul>");
         info = info.arg(QObject::tr("Executable: "), executable,
                         QObject::tr("Arguments: "), arguments.join(QLatin1Char(' ')));
 
@@ -901,99 +901,99 @@ void QzTools::setWmClass(const QString &name, const QWidget* widget)
 QString QzTools::operatingSystem()
 {
 #ifdef Q_OS_MACOS
-    QString str = "Mac OS X";
+    QString str = QSL("Mac OS X");
 
     SInt32 majorVersion;
     SInt32 minorVersion;
 
     if (Gestalt(gestaltSystemVersionMajor, &majorVersion) == noErr && Gestalt(gestaltSystemVersionMinor, &minorVersion) == noErr) {
-        str.append(QString(" %1.%2").arg(majorVersion).arg(minorVersion));
+        str.append(QSL(" %1.%2").arg(majorVersion).arg(minorVersion));
     }
 
     return str;
 #endif
 #ifdef Q_OS_LINUX
-    return "Linux";
+    return QSL("Linux");
 #endif
 #ifdef Q_OS_BSD4
-    return "BSD 4.4";
+    return QSL("BSD 4.4");
 #endif
 #ifdef Q_OS_BSDI
-    return "BSD/OS";
+    return QSL("BSD/OS");
 #endif
 #ifdef Q_OS_FREEBSD
-    return "FreeBSD";
+    return QSL("FreeBSD");
 #endif
 #ifdef Q_OS_HPUX
-    return "HP-UX";
+    return QSL("HP-UX");
 #endif
 #ifdef Q_OS_HURD
-    return "GNU Hurd";
+    return QSL("GNU Hurd");
 #endif
 #ifdef Q_OS_LYNX
-    return "LynxOS";
+    return QSL("LynxOS");
 #endif
 #ifdef Q_OS_NETBSD
-    return "NetBSD";
+    return QSL("NetBSD");
 #endif
 #ifdef Q_OS_OS2
-    return "OS/2";
+    return QSL("OS/2");
 #endif
 #ifdef Q_OS_OPENBSD
-    return "OpenBSD";
+    return QSL("OpenBSD");
 #endif
 #ifdef Q_OS_OSF
-    return "HP Tru64 UNIX";
+    return QSL("HP Tru64 UNIX");
 #endif
 #ifdef Q_OS_SOLARIS
-    return "Sun Solaris";
+    return QSL("Sun Solaris");
 #endif
 #ifdef Q_OS_UNIXWARE
-    return "UnixWare 7 / Open UNIX 8";
+    return QSL("UnixWare 7 / Open UNIX 8");
 #endif
 #ifdef Q_OS_UNIX
-    return "Unix";
+    return QSL("Unix");
 #endif
 #ifdef Q_OS_HAIKU
-    return "Haiku";
+    return QSL("Haiku");
 #endif
 #ifdef Q_OS_WIN32
-    QString str = "Windows";
+    QString str = QSL("Windows");
 
     switch (QSysInfo::windowsVersion()) {
     case QSysInfo::WV_NT:
-        str.append(" NT");
+        str.append(QSL(" NT"));
         break;
 
     case QSysInfo::WV_2000:
-        str.append(" 2000");
+        str.append(QSL(" 2000"));
         break;
 
     case QSysInfo::WV_XP:
-        str.append(" XP");
+        str.append(QSL(" XP"));
         break;
     case QSysInfo::WV_2003:
-        str.append(" XP Pro x64");
+        str.append(QSL(" XP Pro x64"));
         break;
 
     case QSysInfo::WV_VISTA:
-        str.append(" Vista");
+        str.append(QSL(" Vista"));
         break;
 
     case QSysInfo::WV_WINDOWS7:
-        str.append(" 7");
+        str.append(QSL(" 7"));
         break;
 
     case QSysInfo::WV_WINDOWS8:
-        str.append(" 8");
+        str.append(QSL(" 8"));
         break;
 
     case QSysInfo::WV_WINDOWS8_1:
-        str.append(" 8.1");
+        str.append(QSL(" 8.1"));
         break;
 
     case QSysInfo::WV_WINDOWS10:
-        str.append(" 10");
+        str.append(QSL(" 10"));
         break;
 
     default:

src/lib/tools/scripts.cpp

@@ -232,7 +232,7 @@ QString Scripts::sendPostData(const QUrl &url, const QByteArray &data)
                                "form.appendChild(val);");
 
     QString values;
-    QUrlQuery query(data);
+    QUrlQuery query(QString::fromUtf8(data));
 
     const auto &queryItems = query.queryItems(QUrl::FullyDecoded);
     for (int i = 0; i < queryItems.size(); ++i) {
@@ -273,7 +273,7 @@ QString Scripts::completeFormData(const QByteArray &data)
                           ""
                           "})()");
 
-    QString d = data;
+    QString d = QString::fromUtf8(data);
     d.replace(QL1S("'"), QL1S("\\'"));
     return source.arg(d);
 }

src/lib/webengine/webpage.cpp

@@ -328,7 +328,7 @@ void WebPage::handleUnknownProtocol(const QUrl &url)
     CheckBoxDialog dialog(QMessageBox::Yes | QMessageBox::No, view());
     dialog.setDefaultButton(QMessageBox::Yes);
 
-    const QString wrappedUrl = QzTools::alignTextToWidth(url.toString(), "<br/>", dialog.fontMetrics(), 450);
+    const QString wrappedUrl = QzTools::alignTextToWidth(url.toString(), QSL("<br/>"), dialog.fontMetrics(), 450);
     const QString text = tr("Falkon cannot handle <b>%1:</b> links. The requested link "
                             "is <ul><li>%2</li></ul>Do you want Falkon to try "
                             "open this link in system application?").arg(protocol, wrappedUrl);
@@ -413,7 +413,7 @@ void WebPage::renderProcessTerminated(QWebEnginePage::RenderProcessTerminationSt
         return;
 
     QTimer::singleShot(0, this, [this]() {
-        QString page = QzTools::readAllFileContents(":html/tabcrash.html");
+        QString page = QzTools::readAllFileContents(QSL(":html/tabcrash.html"));
         page.replace(QL1S("%IMAGE%"), QzTools::pixmapToDataUrl(IconProvider::standardIcon(QStyle::SP_MessageBoxWarning).pixmap(45)).toString());
         page.replace(QL1S("%TITLE%"), tr("Failed loading page"));
         page.replace(QL1S("%HEADING%"), tr("Failed loading page"));
@@ -421,7 +421,7 @@ void WebPage::renderProcessTerminated(QWebEnginePage::RenderProcessTerminationSt
         page.replace(QL1S("%LI-2%"), tr("Try reloading the page or closing some tabs to make more memory available."));
         page.replace(QL1S("%RELOAD-PAGE%"), tr("Reload page"));
         page = QzTools::applyDirectionToPage(page);
-        setHtml(page.toUtf8(), url());
+        setHtml(page, url());
     });
 }
 
@@ -480,11 +480,11 @@ QStringList WebPage::chooseFiles(QWebEnginePage::FileSelectionMode mode, const Q
 
     switch (mode) {
     case FileSelectOpen:
-        files = QStringList(QzTools::getOpenFileName("WebPage-ChooseFile", view(), tr("Choose file..."), suggestedFileName));
+        files = QStringList(QzTools::getOpenFileName(QSL("WebPage-ChooseFile"), view(), tr("Choose file..."), suggestedFileName));
         break;
 
     case FileSelectOpenMultiple:
-        files = QzTools::getOpenFileNames("WebPage-ChooseFile", view(), tr("Choose files..."), suggestedFileName);
+        files = QzTools::getOpenFileNames(QSL("WebPage-ChooseFile"), view(), tr("Choose files..."), suggestedFileName);
         break;
 
     default:
@@ -622,7 +622,7 @@ void WebPage::javaScriptAlert(const QUrl &securityOrigin, const QString &msg)
     if (!kEnableJsNonBlockDialogs) {
         QString title = tr("JavaScript alert");
         if (!url().host().isEmpty()) {
-            title.append(QString(" - %1").arg(url().host()));
+            title.append(QSL(" - %1").arg(url().host()));
         }
 
         CheckBoxDialog dialog(QMessageBox::Ok, view());

src/lib/webengine/webview.cpp

@@ -387,7 +387,7 @@ void WebView::printPage()
     Q_ASSERT(m_page);
 
     auto *printer = new QPrinter();
-    printer->setCreator(tr("Falkon %1 (%2)").arg(Qz::VERSION, Qz::WWWADDRESS));
+    printer->setCreator(tr("Falkon %1 (%2)").arg(QString::fromLatin1(Qz::VERSION), QString::fromLatin1(Qz::WWWADDRESS)));
     printer->setDocName(QzTools::filterCharsFromFilename(title()));
 
     auto *dialog = new QPrintDialog(printer, this);
@@ -482,14 +482,14 @@ void WebView::sendTextByMail()
 
 void WebView::sendPageByMail()
 {
-    const QUrl mailUrl = QUrl::fromEncoded("mailto:%20?body=" + QUrl::toPercentEncoding(url().toEncoded()) + "&subject=" + QUrl::toPercentEncoding(title()));
+    const QUrl mailUrl = QUrl::fromEncoded("mailto:%20?body=" + QUrl::toPercentEncoding(QString::fromUtf8(url().toEncoded())) + "&subject=" + QUrl::toPercentEncoding(title()));
     QDesktopServices::openUrl(mailUrl);
 }
 
 void WebView::copyLinkToClipboard()
 {
     if (auto* action = qobject_cast<QAction*>(sender())) {
-        QApplication::clipboard()->setText(action->data().toUrl().toEncoded());
+        QApplication::clipboard()->setText(QString::fromUtf8(action->data().toUrl().toEncoded()));
     }
 }
 
@@ -753,7 +753,7 @@ void WebView::createPageContextMenu(QMenu* menu)
     // Special menu for Speed Dial page
     if (url().toString() == QL1S("falkon:speeddial")) {
         menu->addSeparator();
-        menu->addAction(QIcon::fromTheme("list-add"), tr("&Add New Page"), this, &WebView::addSpeedDial);
+        menu->addAction(QIcon::fromTheme(QSL("list-add")), tr("&Add New Page"), this, &WebView::addSpeedDial);
         menu->addAction(IconProvider::settingsIcon(), tr("&Configure Speed Dial"), this, &WebView::configureSpeedDial);
         menu->addSeparator();
         menu->addAction(QIcon::fromTheme(QSL("view-refresh")), tr("Reload All Dials"), this, &WebView::reloadAllSpeedDials);
@@ -775,22 +775,22 @@ void WebView::createPageContextMenu(QMenu* menu)
     });
 
     menu->addSeparator();
-    menu->addAction(QIcon::fromTheme("bookmark-new"), tr("Book&mark page"), this, &WebView::bookmarkLink);
+    menu->addAction(QIcon::fromTheme(QSL("bookmark-new")), tr("Book&mark page"), this, &WebView::bookmarkLink);
-    menu->addAction(QIcon::fromTheme("document-save"), tr("&Save page as..."), this, &WebView::savePageAs);
+    menu->addAction(QIcon::fromTheme(QSL("document-save")), tr("&Save page as..."), this, &WebView::savePageAs);
-    menu->addAction(QIcon::fromTheme("edit-copy"), tr("&Copy page link"), this, &WebView::copyLinkToClipboard)->setData(url());
+    menu->addAction(QIcon::fromTheme(QSL("edit-copy")), tr("&Copy page link"), this, &WebView::copyLinkToClipboard)->setData(url());
-    menu->addAction(QIcon::fromTheme("mail-message-new"), tr("Send page link..."), this, &WebView::sendPageByMail);
+    menu->addAction(QIcon::fromTheme(QSL("mail-message-new")), tr("Send page link..."), this, &WebView::sendPageByMail);
     menu->addSeparator();
-    menu->addAction(QIcon::fromTheme("edit-select-all"), tr("Select &all"), this, &WebView::editSelectAll);
+    menu->addAction(QIcon::fromTheme(QSL("edit-select-all")), tr("Select &all"), this, &WebView::editSelectAll);
     menu->addSeparator();
 
     const QString scheme = url().scheme();
 
     if (scheme != QL1S("view-source") && WebPage::internalSchemes().contains(scheme)) {
-        menu->addAction(QIcon::fromTheme("text-html"), tr("Show so&urce code"), this, &WebView::showSource);
+        menu->addAction(QIcon::fromTheme(QSL("text-html")), tr("Show so&urce code"), this, &WebView::showSource);
     }
 
     if (SiteInfo::canShowSiteInfo(url()))
-        menu->addAction(QIcon::fromTheme("dialog-information"), tr("Show info ab&out site"), this, &WebView::showSiteInfo);
+        menu->addAction(QIcon::fromTheme(QSL("dialog-information")), tr("Show info ab&out site"), this, &WebView::showSiteInfo);
 }
 
 void WebView::createLinkContextMenu(QMenu* menu, const WebHitTestResult &hitTest)
@@ -807,15 +807,15 @@ void WebView::createLinkContextMenu(QMenu* menu, const WebHitTestResult &hitTest
 
     QVariantList bData;
     bData << hitTest.linkUrl() << hitTest.linkTitle();
-    menu->addAction(QIcon::fromTheme("bookmark-new"), tr("B&ookmark link"), this, &WebView::bookmarkLink)->setData(bData);
+    menu->addAction(QIcon::fromTheme(QSL("bookmark-new")), tr("B&ookmark link"), this, &WebView::bookmarkLink)->setData(bData);
 
-    menu->addAction(QIcon::fromTheme("document-save"), tr("&Save link as..."), this, &WebView::downloadLinkToDisk);
+    menu->addAction(QIcon::fromTheme(QSL("document-save")), tr("&Save link as..."), this, &WebView::downloadLinkToDisk);
-    menu->addAction(QIcon::fromTheme("mail-message-new"), tr("Send link..."), this, &WebView::sendTextByMail)->setData(hitTest.linkUrl().toEncoded());
+    menu->addAction(QIcon::fromTheme(QSL("mail-message-new")), tr("Send link..."), this, &WebView::sendTextByMail)->setData(hitTest.linkUrl().toEncoded());
-    menu->addAction(QIcon::fromTheme("edit-copy"), tr("&Copy link address"), this, &WebView::copyLinkToClipboard)->setData(hitTest.linkUrl());
+    menu->addAction(QIcon::fromTheme(QSL("edit-copy")), tr("&Copy link address"), this, &WebView::copyLinkToClipboard)->setData(hitTest.linkUrl());
     menu->addSeparator();
 
     if (!selectedText().isEmpty()) {
-        pageAction(QWebEnginePage::Copy)->setIcon(QIcon::fromTheme("edit-copy"));
+        pageAction(QWebEnginePage::Copy)->setIcon(QIcon::fromTheme(QSL("edit-copy")));
         menu->addAction(pageAction(QWebEnginePage::Copy));
     }
 }
@@ -831,14 +831,14 @@ void WebView::createImageContextMenu(QMenu* menu, const WebHitTestResult &hitTes
         menu->addAction(act);
     }
     menu->addAction(tr("Copy image"), this, &WebView::copyImageToClipboard);
-    menu->addAction(QIcon::fromTheme("edit-copy"), tr("Copy image ad&dress"), this, &WebView::copyLinkToClipboard)->setData(hitTest.imageUrl());
+    menu->addAction(QIcon::fromTheme(QSL("edit-copy")), tr("Copy image ad&dress"), this, &WebView::copyLinkToClipboard)->setData(hitTest.imageUrl());
     menu->addSeparator();
-    menu->addAction(QIcon::fromTheme("document-save"), tr("&Save image as..."), this, &WebView::downloadImageToDisk);
+    menu->addAction(QIcon::fromTheme(QSL("document-save")), tr("&Save image as..."), this, &WebView::downloadImageToDisk);
-    menu->addAction(QIcon::fromTheme("mail-message-new"), tr("Send image..."), this, &WebView::sendTextByMail)->setData(hitTest.imageUrl().toEncoded());
+    menu->addAction(QIcon::fromTheme(QSL("mail-message-new")), tr("Send image..."), this, &WebView::sendTextByMail)->setData(hitTest.imageUrl().toEncoded());
     menu->addSeparator();
 
     if (!selectedText().isEmpty()) {
-        pageAction(QWebEnginePage::Copy)->setIcon(QIcon::fromTheme("edit-copy"));
+        pageAction(QWebEnginePage::Copy)->setIcon(QIcon::fromTheme(QSL("edit-copy")));
         menu->addAction(pageAction(QWebEnginePage::Copy));
     }
 }
@@ -853,7 +853,7 @@ void WebView::createSelectedTextContextMenu(QMenu* menu, const WebHitTestResult
     if (!menu->actions().contains(pageAction(QWebEnginePage::Copy))) {
         menu->addAction(pageAction(QWebEnginePage::Copy));
     }
-    menu->addAction(QIcon::fromTheme("mail-message-new"), tr("Send text..."), this, &WebView::sendTextByMail)->setData(selectedText);
+    menu->addAction(QIcon::fromTheme(QSL("mail-message-new")), tr("Send text..."), this, &WebView::sendTextByMail)->setData(selectedText);
     menu->addSeparator();
 
     // #379: Remove newlines
@@ -865,7 +865,7 @@ void WebView::createSelectedTextContextMenu(QMenu* menu, const WebHitTestResult
     QUrl guessedUrl = QUrl::fromUserInput(selectedString);
 
     if (isUrlValid(guessedUrl)) {
-        auto* act = new Action(QIcon::fromTheme("document-open-remote"), tr("Go to &web address"));
+        auto* act = new Action(QIcon::fromTheme(QSL("document-open-remote")), tr("Go to &web address"));
         act->setData(guessedUrl);
 
         connect(act, &QAction::triggered, this, &WebView::openActionUrl);
@@ -907,12 +907,12 @@ void WebView::createMediaContextMenu(QMenu *menu, const WebHitTestResult &hitTes
     bool muted = hitTest.mediaMuted();
 
     menu->addSeparator();
-    menu->addAction(paused ? tr("&Play") : tr("&Pause"), this, &WebView::toggleMediaPause)->setIcon(QIcon::fromTheme(paused ? "media-playback-start" : "media-playback-pause"));
+    menu->addAction(paused ? tr("&Play") : tr("&Pause"), this, &WebView::toggleMediaPause)->setIcon(QIcon::fromTheme(paused ? QSL("media-playback-start") : QSL("media-playback-pause")));
-    menu->addAction(muted ? tr("Un&mute") : tr("&Mute"), this, &WebView::toggleMediaMute)->setIcon(QIcon::fromTheme(muted ? "audio-volume-muted" : "audio-volume-high"));
+    menu->addAction(muted ? tr("Un&mute") : tr("&Mute"), this, &WebView::toggleMediaMute)->setIcon(QIcon::fromTheme(muted ? QSL("audio-volume-muted") : QSL("audio-volume-high")));
     menu->addSeparator();
-    menu->addAction(QIcon::fromTheme("edit-copy"), tr("&Copy Media Address"), this, &WebView::copyLinkToClipboard)->setData(hitTest.mediaUrl());
+    menu->addAction(QIcon::fromTheme(QSL("edit-copy")), tr("&Copy Media Address"), this, &WebView::copyLinkToClipboard)->setData(hitTest.mediaUrl());
-    menu->addAction(QIcon::fromTheme("mail-message-new"), tr("&Send Media Address"), this, &WebView::sendTextByMail)->setData(hitTest.mediaUrl().toEncoded());
+    menu->addAction(QIcon::fromTheme(QSL("mail-message-new")), tr("&Send Media Address"), this, &WebView::sendTextByMail)->setData(hitTest.mediaUrl().toEncoded());
-    menu->addAction(QIcon::fromTheme("document-save"), tr("Save Media To &Disk"), this, &WebView::downloadMediaToDisk);
+    menu->addAction(QIcon::fromTheme(QSL("document-save")), tr("Save Media To &Disk"), this, &WebView::downloadMediaToDisk);
 }
 
 void WebView::checkForForm(QAction *action, const QPoint &pos)
@@ -946,17 +946,17 @@ void WebView::createSearchEngine()
 
 void WebView::addSpeedDial()
 {
-    page()->runJavaScript("addSpeedDial()", WebPage::SafeJsWorld);
+    page()->runJavaScript(QSL("addSpeedDial()"), WebPage::SafeJsWorld);
 }
 
 void WebView::configureSpeedDial()
 {
-    page()->runJavaScript("configureSpeedDial()", WebPage::SafeJsWorld);
+    page()->runJavaScript(QSL("configureSpeedDial()"), WebPage::SafeJsWorld);
 }
 
 void WebView::reloadAllSpeedDials()
 {
-    page()->runJavaScript("reloadAll()", WebPage::SafeJsWorld);
+    page()->runJavaScript(QSL("reloadAll()"), WebPage::SafeJsWorld);
 }
 
 void WebView::toggleMediaPause()
@@ -973,37 +973,37 @@ void WebView::initializeActions()
 {
     QAction* undoAction = pageAction(QWebEnginePage::Undo);
     undoAction->setText(tr("&Undo"));
-    undoAction->setShortcut(QKeySequence("Ctrl+Z"));
+    undoAction->setShortcut(QKeySequence(QSL("Ctrl+Z")));
     undoAction->setShortcutContext(Qt::WidgetWithChildrenShortcut);
     undoAction->setIcon(QIcon::fromTheme(QSL("edit-undo")));
 
     QAction* redoAction = pageAction(QWebEnginePage::Redo);
     redoAction->setText(tr("&Redo"));
-    redoAction->setShortcut(QKeySequence("Ctrl+Shift+Z"));
+    redoAction->setShortcut(QKeySequence(QSL("Ctrl+Shift+Z")));
     redoAction->setShortcutContext(Qt::WidgetWithChildrenShortcut);
     redoAction->setIcon(QIcon::fromTheme(QSL("edit-redo")));
 
     QAction* cutAction = pageAction(QWebEnginePage::Cut);
     cutAction->setText(tr("&Cut"));
-    cutAction->setShortcut(QKeySequence("Ctrl+X"));
+    cutAction->setShortcut(QKeySequence(QSL("Ctrl+X")));
     cutAction->setShortcutContext(Qt::WidgetWithChildrenShortcut);
     cutAction->setIcon(QIcon::fromTheme(QSL("edit-cut")));
 
     QAction* copyAction = pageAction(QWebEnginePage::Copy);
     copyAction->setText(tr("&Copy"));
-    copyAction->setShortcut(QKeySequence("Ctrl+C"));
+    copyAction->setShortcut(QKeySequence(QSL("Ctrl+C")));
     copyAction->setShortcutContext(Qt::WidgetWithChildrenShortcut);
     copyAction->setIcon(QIcon::fromTheme(QSL("edit-copy")));
 
     QAction* pasteAction = pageAction(QWebEnginePage::Paste);
     pasteAction->setText(tr("&Paste"));
-    pasteAction->setShortcut(QKeySequence("Ctrl+V"));
+    pasteAction->setShortcut(QKeySequence(QSL("Ctrl+V")));
     pasteAction->setShortcutContext(Qt::WidgetWithChildrenShortcut);
     pasteAction->setIcon(QIcon::fromTheme(QSL("edit-paste")));
 
     QAction* selectAllAction = pageAction(QWebEnginePage::SelectAll);
     selectAllAction->setText(tr("Select All"));
-    selectAllAction->setShortcut(QKeySequence("Ctrl+A"));
+    selectAllAction->setShortcut(QKeySequence(QSL("Ctrl+A")));
     selectAllAction->setShortcutContext(Qt::WidgetWithChildrenShortcut);
     selectAllAction->setIcon(QIcon::fromTheme(QSL("edit-select-all")));
 

src/lib/webtab/searchtoolbar.cpp

@@ -35,8 +35,8 @@ SearchToolBar::SearchToolBar(WebView* view, QWidget* parent)
     ui->setupUi(this);
 
     ui->closeButton->setIcon(IconProvider::instance()->standardIcon(QStyle::SP_DialogCloseButton));
-    ui->next->setShortcut(QKeySequence("Ctrl+G"));
+    ui->next->setShortcut(QKeySequence(QSL("Ctrl+G")));
-    ui->previous->setShortcut(QKeySequence("Ctrl+Shift+G"));
+    ui->previous->setShortcut(QKeySequence(QSL("Ctrl+Shift+G")));
 
     ui->resultsInfo->hide();
     connect(view->page(), &QWebEnginePage::findTextFinished, this, &SearchToolBar::showSearchResults);
@@ -47,10 +47,10 @@ SearchToolBar::SearchToolBar(WebView* view, QWidget* parent)
     connect(ui->previous, &QAbstractButton::clicked, this, &SearchToolBar::findPrevious);
     connect(ui->caseSensitive, &QAbstractButton::clicked, this, &SearchToolBar::caseSensitivityChanged);
 
-    auto* findNextAction = new QShortcut(QKeySequence("F3"), this);
+    auto* findNextAction = new QShortcut(QKeySequence(QSL("F3")), this);
     connect(findNextAction, &QShortcut::activated, this, &SearchToolBar::findNext);
 
-    auto* findPreviousAction = new QShortcut(QKeySequence("Shift+F3"), this);
+    auto* findPreviousAction = new QShortcut(QKeySequence(QSL("Shift+F3")), this);
     connect(findPreviousAction, &QShortcut::activated, this, &SearchToolBar::findPrevious);
 
     parent->installEventFilter(this);

src/main/main.cpp

@@ -59,7 +59,7 @@ int main(int argc, char* argv[])
         for (int i = 0; i < argc; ++i)
             args[i] = argv[i];
 
-        QString stylecmd = QL1S("-style=") + style;
+        QString stylecmd = QL1S("-style=") + QString::fromUtf8(style);
         args[argc++] = qstrdup(stylecmd.toUtf8().constData());
         argv = args;
     }

src/plugins/AutoScroll/autoscrollplugin.cpp

@@ -49,7 +49,7 @@ void AutoScrollPlugin::unload()
 bool AutoScrollPlugin::testPlugin()
 {
     // Require the version that the plugin was built with
-    return (Qz::VERSION == QLatin1String(FALKON_VERSION));
+    return (QString::fromLatin1(Qz::VERSION) == QLatin1String(FALKON_VERSION));
 }
 
 void AutoScrollPlugin::showSettings(QWidget* parent)