WindowSizer sɣur Dr. Cheap

4 n yitran ɣef 5

3 n yiceggiren

Yettwasezmel 2 ɣef 5
sɣur aWalker, 5 jierren lyn
Yettwasezmel 2 ɣef 5
sɣur arnofly, 7 jierren lyn
Position do not works on Windows 7. Sometime there is a bug refresh when you click on the icon extension (the menu is empty). You can find a better extension to do the same thing.
Tiririt n ineflayen
yeffeɣ-d deg 7 jierren lyn
This add-on does not do anything with *position* so maybe it's not for you in the first place.
Yettwasezmel 2 ɣef 5
sɣur Jacob Share, 8 jierren lyn
Potentially useful, but buggy. I was only able to add one size, 800x600. When I then tried adding 720x1280, the add-on wouldn't let me save the new size