Sleazy Fork is available in English.
Shows just fullsize Image with hotkeys & without pop-ups on many image-hosting sites
< Commentaires sur Handy Image
CORRECTION:
TEST PAGE: https://www.flickr.com/photos/84398391@N00/
It appears it does not crash for every user.
fixed
Fix: Flickr.com Crashing
Latest Firefox (V37.0.1) Crashes when opening an Image.
Also tested on earlier Versions.
Tested without other addons.
Test Page: https://www.flickr.com/photos/thomas-riecken/
Click any image
Handy Image Script Unresponsive
Thanks for your time.