diff --git a/app/generalconfigpage.ui b/app/generalconfigpage.ui
--- a/app/generalconfigpage.ui
+++ b/app/generalconfigpage.ui
@@ -26,7 +26,7 @@
     </widget>
    </item>
    <item row="1" column="1">
-    <spacer name="verticalSpacer">
+    <spacer name="verticalSpacer_1">
      <property name="orientation">
       <enum>Qt::Vertical</enum>
      </property>
@@ -123,27 +123,63 @@
     </spacer>
    </item>
    <item row="4" column="0">
+    <widget class="QLabel" name="label">
+     <property name="text">
+      <string>JPEG save quality:</string>
+     </property>
+    </widget>
+   </item>
+   <item row="4" column="1">
+    <widget class="QSpinBox" name="kcfg_JPEGQuality">
+     <property name="minimum">
+      <number>1</number>
+     </property>
+     <property name="maximum">
+      <number>100</number>
+     </property>
+     <property name="suffix">
+      <string>%</string>
+     </property>
+    </widget>
+   </item>
+   <item row="5" column="1">
+    <spacer name="verticalSpacer_3">
+     <property name="orientation">
+      <enum>Qt::Vertical</enum>
+     </property>
+     <property name="sizeType">
+      <enum>QSizePolicy::Fixed</enum>
+     </property>
+     <property name="sizeHint" stdset="0">
+      <size>
+       <width>20</width>
+       <height>20</height>
+      </size>
+     </property>
+    </spacer>
+   </item>
+   <item row="6" column="0">
     <widget class="QLabel" name="label_3">
      <property name="text">
       <string>Thumbnail actions:</string>
      </property>
     </widget>
    </item>
-   <item row="4" column="1">
+   <item row="6" column="1">
     <widget class="QRadioButton" name="allButtonsThumbnailActionsRadioButton">
      <property name="text">
       <string>All buttons</string>
      </property>
     </widget>
    </item>
-   <item row="5" column="1">
+   <item row="7" column="1">
     <widget class="QRadioButton" name="selectionOnlyThumbnailActionsRadioButton">
      <property name="text">
       <string>Show selection button only</string>
      </property>
     </widget>
    </item>
-   <item row="6" column="1">
+   <item row="8" column="1">
     <widget class="QRadioButton" name="noneThumbnailActionsRadioButton">
      <property name="text">
       <string>None</string>
diff --git a/app/gvcore.cpp b/app/gvcore.cpp
--- a/app/gvcore.cpp
+++ b/app/gvcore.cpp
@@ -361,9 +361,16 @@
         return;
     }
 
+     if (format == "jpg") {
+         // Gwenview code assumes JPEG images have "jpeg" format, so if the
+         // dialog returned the format "jpg", use "jpeg" instead
+         // This does not affect the actual filename extension
+         format = "jpeg";
+    }
+
     // Start save
     Document::Ptr doc = DocumentFactory::instance()->load(url);
-    KJob* job = doc->save(saveAsUrl, format.data());
+    KJob* job = doc->save(saveAsUrl, format);
     if (!job) {
         const QString name = saveAsUrl.fileName().isEmpty() ? saveAsUrl.toDisplayString() : saveAsUrl.fileName();
         const QString msg = xi18nc("@info", "<emphasis strong='true'>Saving <filename>%1</filename> failed:</emphasis><nl />%2",
diff --git a/lib/gwenviewconfig.kcfg b/lib/gwenviewconfig.kcfg
--- a/lib/gwenviewconfig.kcfg
+++ b/lib/gwenviewconfig.kcfg
@@ -57,6 +57,10 @@
             <default>false</default>
         </entry>
 
+        <entry name="JPEGQuality" type="Int">
+            <default>90</default>
+        </entry>
+
         <entry name="LastTargetDir" type="Path">
         </entry>
 
diff --git a/lib/jpegcontent.cpp b/lib/jpegcontent.cpp
--- a/lib/jpegcontent.cpp
+++ b/lib/jpegcontent.cpp
@@ -185,6 +185,7 @@
     {
         QBuffer buffer;
         QImageWriter writer(&buffer, "jpeg");
+        writer.setQuality(GwenviewConfig::jPEGQuality());
         if (!writer.write(mImage)) {
             mErrorString = writer.errorString();
             return false;