Theme font & Size Changer changes the font and font size in Firefox. The freeware thus ensuring individual designs and better accessibility when surfing the Internet using the Mozilla browser. Theme font & Size Changer latches onto after installation in the Add-ons menu of Mozilla Firefox a. Here the user also determines the type of font next to the font size. The change of the font size and the font affects all windows, menus, toolbars and tabs within Firefox. For lovers of large fonts or people with visual impairments Theme is Font & Size Changer a true blessing. The freeware is also working with other personalized Firefox themes, the highest compatibility, however, is achieved when used with the default skin of the fire fox.