Difficulty: Moderately Easy
Step1
Find an icon that you would like to use as your default Firefox icon. The default Firefox icon consists of a red fox and a globe, but many variations exist including one that seems to "eat" an Internet Explorer icon. Make sure that the icon ends in ".ico."
Step3
Right-click on your default Firefox icon and scroll down to "Properties." In the pop-up window, select the "Shortcut" tab. On the bottom portion of the window, choose "Change Icon."
Step4
Click "Browse" and sort through your files until you come across your newly downloaded Firefox icon. Select it and press "OK."
Step5
Return to the main window and press "Apply" to see how your icon looks against your desktop. If you don't like it, find other icons and experiment with them until you find one that you like.
Step6
Choose "OK" in the main window to make your changes permanent.