Rated 4 out of 5 stars

This add-on is useful for when I use firefox and have another application on the side,and I'd like it sized to fit just right, or fit the minimum width that doesn't have a horizontal scrollbar for a favorite website.

It'd be nice if I could name my resolutions. So I could know which resolutions went good with which sites, before having to try them out.

It would also be neat if it had a feature to resize the window to the minimum size less than or equal to screen size that doesn't need a scrollbar (horizontal and vertical). Maybe even make it do this automatically.

It would also be nice if it had the option to move the position as well. The standard 9 positions or a custom positions
(Top-Middle-Bottom, Left-Center-Right)
TL TC TR
ML MC MR
BL BC BR
with the taskbar in consideration. (optional)

This review is for a previous version of the add-on (0.90).