What is a Favicon?
Its this tiny little graphic that gets displayed in your browser when you’re visiting certain websites (left of the URL).
Technically it’s a file called “favicon.ico” in the root directory of your installation. It’s a 16×16 pixel graphic in either ICO, JPG or PNG format. For details, check Wikipedia’s excellent article:
If you’d like to add one to your own site, perhaps this article is useful to you: