diff --git a/src/backend/core/Project.h b/src/backend/core/Project.h
--- a/src/backend/core/Project.h
+++ b/src/backend/core/Project.h
@@ -73,7 +73,7 @@
 	bool hasChanged() const;
 	void navigateTo(const QString& path);
 
-	void save(QXmlStreamWriter*) const override;
+	void save(const QPixmap&, QXmlStreamWriter*) const;
 	bool load(XmlStreamReader*, bool preview) override;
 	bool load(const QString&, bool preview = false);
 
@@ -98,6 +98,7 @@
 	class Private;
 	Private* d;
 	bool readProjectAttributes(XmlStreamReader*);
+	void save(QXmlStreamWriter*) const override;
 };
 
 #endif // ifndef PROJECT_H
diff --git a/src/backend/core/Project.cpp b/src/backend/core/Project.cpp
--- a/src/backend/core/Project.cpp
+++ b/src/backend/core/Project.cpp
@@ -53,6 +53,7 @@
 #include <QMenu>
 #include <QThreadPool>
 #include <QUndoStack>
+#include <QBuffer>
 
 #include <KConfig>
 #include <KConfigGroup>
@@ -223,10 +224,8 @@
 //##############################################################################
 //##################  Serialization/Deserialization  ###########################
 //##############################################################################
-/**
- * \brief Save as XML
- */
-void Project::save(QXmlStreamWriter* writer) const {
+
+void Project::save(const QPixmap& thumbnail, QXmlStreamWriter* writer) const {
 	//set the version and the modification time to the current values
 	d->version = LVERSION;
 	d->modificationTime = QDateTime::currentDateTime();
@@ -240,10 +239,26 @@
 	writer->writeAttribute("fileName", fileName());
 	writer->writeAttribute("modificationTime", modificationTime().toString("yyyy-dd-MM hh:mm:ss:zzz"));
 	writer->writeAttribute("author", author());
+
+	QByteArray bArray;
+	QBuffer buffer(&bArray);
+	buffer.open(QIODevice::WriteOnly);
+	QPixmap scaledThumbnail = thumbnail.scaled(512,512);
+	scaledThumbnail.save(&buffer, "JPEG");
+	QString image = QString::fromLatin1(bArray.toBase64().data());
+	writer->writeAttribute("thumbnail", image);
+
 	writeBasicAttributes(writer);
 
 	writeCommentElement(writer);
 
+	save(writer);
+}
+
+/**
+ * \brief Save as XML
+ */
+void Project::save(QXmlStreamWriter* writer) const {
 	//save all children
 	for (auto* child : children<AbstractAspect>(IncludeHidden)) {
 		writer->writeStartElement("child_aspect");
diff --git a/src/kdefrontend/MainWin.cpp b/src/kdefrontend/MainWin.cpp
--- a/src/kdefrontend/MainWin.cpp
+++ b/src/kdefrontend/MainWin.cpp
@@ -1097,8 +1097,10 @@
 	if (file->open(QIODevice::WriteOnly)) {
 		m_project->setFileName(fileName);
 
+		QPixmap thumbnail = centralWidget()->grab();
+
 		QXmlStreamWriter writer(file);
-		m_project->save(&writer);
+		m_project->save(thumbnail, &writer);
 		m_project->undoStack()->clear();
 		m_project->setChanged(false);
 		file->close();