Feeling frustrated with the size of Firefox 4’s menu button? You are just a step away from converting it into an icon that is pleasing to look at and takes up very little room.
As you can see in the image there is a definite size difference once the add-on is installed. The add-on currently works with Firefox versions 4.0b3 – 4.0b5pre.
Iconic Firefox Menu 1.0b1 [Mozilla Add-ons]