diff --git a/src/lib/downloads/downloadfilehelper.cpp b/src/lib/downloads/downloadfilehelper.cpp
index 2242299da..c2db65e86 100644
--- a/src/lib/downloads/downloadfilehelper.cpp
+++ b/src/lib/downloads/downloadfilehelper.cpp
@@ -73,7 +73,7 @@ void DownloadFileHelper::handleUnsupportedContent(QNetworkReply* reply, const Do
 
     m_fileSize = m_reply->header(QNetworkRequest::ContentLengthHeader).toLongLong();
     if (m_fileSize > 0) {
-        mimeType.append(QString(" (%1)").arg(DownloadItem::fileSizeToString(m_fileSize)));
+        mimeType.append(QString(" (%1)").arg(qz_fileSizeToString(m_fileSize)));
     }
 
     // Close Empty Tab
diff --git a/src/lib/downloads/downloaditem.cpp b/src/lib/downloads/downloaditem.cpp
index b0e86b06c..806437c06 100644
--- a/src/lib/downloads/downloaditem.cpp
+++ b/src/lib/downloads/downloaditem.cpp
@@ -24,6 +24,7 @@
 #include "downloadmanager.h"
 #include "iconprovider.h"
 #include "networkmanager.h"
+#include "globalfunctions.h"
 
 #include <QMenu>
 #include <QClipboard>
@@ -236,27 +237,6 @@ QString DownloadItem::currentSpeedToString(double speed)
     return QString::number(speed, 'f', 2) + " GB/s";
 }
 
-QString DownloadItem::fileSizeToString(qint64 size)
-{
-    if (size < 0) {
-        return tr("Unknown size");
-    }
-
-    double _size = (double)size;
-    _size /= 1024; //kB
-    if (_size < 1000) {
-        return QString::number(_size, 'f', 0) + " kB";
-    }
-
-    _size /= 1024; //MB
-    if (_size < 1000) {
-        return QString::number(_size, 'f', 1) + " MB";
-    }
-
-    _size /= 1024; //GB
-    return QString::number(_size, 'f', 2) + " GB";
-}
-
 void DownloadItem::updateDownloadInfo(double currSpeed, qint64 received, qint64 total)
 {
 #ifdef DOWNMANAGER_DEBUG
@@ -275,8 +255,8 @@ void DownloadItem::updateDownloadInfo(double currSpeed, qint64 received, qint64
     QString remTime = remaingTimeToString(time);
     m_remTime = time;
 
-    QString currSize = fileSizeToString(received);
-    QString fileSize = fileSizeToString(total);
+    QString currSize = qz_fileSizeToString(received);
+    QString fileSize = qz_fileSizeToString(total);
 
     if (fileSize == tr("Unknown size")) {
         ui->downloadInfo->setText(tr("%2 - unknown size (%3)").arg(currSize, speed));
diff --git a/src/lib/downloads/downloaditem.h b/src/lib/downloads/downloaditem.h
index ed7e2f463..4482904a7 100644
--- a/src/lib/downloads/downloaditem.h
+++ b/src/lib/downloads/downloaditem.h
@@ -53,7 +53,6 @@ public:
 
     static QString remaingTimeToString(QTime time);
     static QString currentSpeedToString(double speed);
-    static QString fileSizeToString(qint64 size);
 
 signals:
     void deleteItem(DownloadItem*);
diff --git a/src/lib/other/browsinglibrary.cpp b/src/lib/other/browsinglibrary.cpp
index 4d5d3ca79..1e9c5b42a 100644
--- a/src/lib/other/browsinglibrary.cpp
+++ b/src/lib/other/browsinglibrary.cpp
@@ -141,9 +141,9 @@ void BrowsingLibrary::optimizeDatabase()
 {
     mApp->setOverrideCursor(Qt::WaitCursor);
     QString profilePath = mApp->currentProfilePath();
-    QString sizeBefore = DownloadItem::fileSizeToString(QFileInfo(profilePath + "browsedata.db").size());
+    QString sizeBefore = qz_fileSizeToString(QFileInfo(profilePath + "browsedata.db").size());
     mApp->history()->optimizeHistory();
-    QString sizeAfter = DownloadItem::fileSizeToString(QFileInfo(profilePath + "browsedata.db").size());
+    QString sizeAfter = qz_fileSizeToString(QFileInfo(profilePath + "browsedata.db").size());
     mApp->restoreOverrideCursor();
     QMessageBox::information(this, tr("Database Optimized"), tr("Database successfully optimized.<br/><br/><b>Database Size Before: </b>%1<br/><b>Database Size After: </b>%2").arg(sizeBefore, sizeAfter));
 }
diff --git a/src/lib/tools/globalfunctions.cpp b/src/lib/tools/globalfunctions.cpp
index 415cf0bc7..fb4421587 100644
--- a/src/lib/tools/globalfunctions.cpp
+++ b/src/lib/tools/globalfunctions.cpp
@@ -265,6 +265,28 @@ QString qz_alignTextToWidth(const QString &string, const QString &text, const QF
     return returnString;
 }
 
+QString qz_fileSizeToString(qint64 size)
+{
+    if (size < 0) {
+        return QObject::tr("Unknown size");
+    }
+
+    double _size = (double)size;
+    _size /= 1024; //kB
+    if (_size < 1000) {
+        return QString::number(_size > 1 ? _size : 1, 'f', 0) + " KB";
+    }
+
+    _size /= 1024; //MB
+    if (_size < 1000) {
+        return QString::number(_size, 'f', 1) + " MB";
+    }
+
+    _size /= 1024; //GB
+    return QString::number(_size, 'f', 2) + " GB";
+}
+
+
 QPixmap qz_createPixmapForSite(const QIcon &icon, const QString &title, const QString &url)
 {
     const QFontMetrics fontMetrics = QApplication::fontMetrics();
diff --git a/src/lib/tools/globalfunctions.h b/src/lib/tools/globalfunctions.h
index f4bebdf71..b60e0526e 100644
--- a/src/lib/tools/globalfunctions.h
+++ b/src/lib/tools/globalfunctions.h
@@ -49,11 +49,11 @@ QString QT_QUPZILLA_EXPORT qz_getFileNameFromUrl(const QUrl &url);
 QString QT_QUPZILLA_EXPORT qz_filterCharsFromFilename(const QString &name);
 
 QString QT_QUPZILLA_EXPORT qz_alignTextToWidth(const QString &string, const QString &text, const QFontMetrics &metrics, int width);
+QString QT_QUPZILLA_EXPORT qz_fileSizeToString(qint64 size);
 
 QPixmap QT_QUPZILLA_EXPORT qz_createPixmapForSite(const QIcon &icon, const QString &title, const QString &url);
 QString QT_QUPZILLA_EXPORT qz_applyDirectionToPage(QString &pageContents);
 
-
 QString QT_QUPZILLA_EXPORT qz_buildSystem();
 
 template <typename T>
diff --git a/src/lib/webview/siteinfo.cpp b/src/lib/webview/siteinfo.cpp
index 4e82bb369..a8f65f9aa 100644
--- a/src/lib/webview/siteinfo.cpp
+++ b/src/lib/webview/siteinfo.cpp
@@ -68,7 +68,7 @@ SiteInfo::SiteInfo(WebView* view, QWidget* parent)
     //GENERAL
     ui->heading->setText(QString("<b>%1</b>:").arg(title));
     ui->siteAddress->setText(view->url().toString());
-    ui->sizeLabel->setText(DownloadItem::fileSizeToString(webPage->totalBytes()));
+    ui->sizeLabel->setText(qz_fileSizeToString(webPage->totalBytes()));
     QString encoding;
 
     //Meta
@@ -202,7 +202,7 @@ void SiteInfo::databaseItemChanged(QListWidgetItem* item)
 
     ui->databaseName->setText(QString("%1 (%2)").arg(db.displayName(), db.name()));
     ui->databasePath->setText(db.fileName());
-    ui->databaseSize->setText(DownloadItem::fileSizeToString(db.size()));
+    ui->databaseSize->setText(qz_fileSizeToString(db.size()));
 }
 
 void SiteInfo::copyActionData()