Turns off graphical preview of text/image when dragging and dropping.
Compatibility 
Works with: Firefox 3.6+
Background
Whenever text or images are highlighted and then dragged, Firefox displays a graphical preview making it difficult to accurately drag the items to the desired location.
The Tweak
One of the ‘new’ features in Firefox 3 is a graphical preview of the images, text, tabs, etc. your are dragging. This was suppose to make it easier for to see what items are being dragged. The tweak will return the familiar ‘box’ outline for drag and drop as seen in Firefox 2. To turn off this feature:
- In a new tab type about:config
- In the filter field type nglayout.enable_drag_images
- Double-click on the entry below so the value is False
- Close the tab (no restart needed)
Updated: November 15, 2025
