Access Keys
To change the text size in Mozilla Firefox (version 1.5 and later), do the following:
* Select the View menu from the top of the browser window.
* From the dropdown menu that appears, select Text Size.
* Choose from the options that appear in a side menu to either Increase or Decrease the text size. If you choose Normal, the text in the browser will return to the default size.
Firefox also provides keyboard shortcuts to change the text size:
* Press Ctrl and + to increase the text size.
* Press Ctrl and + to decrease the text size.
* Press Ctrl and 0 to return the text to its default size.