HTML Kit site requirements.

 

How many browsers support favicons?

All current versions of the major browsers support favicons, including Internet Explorer 5/6+, Firefox 1+, Mozilla 1+, Netscape 7+, Opera 7+, Konqueror 3+, Safari and more.
 
If a particular browser doesn't have support for the favicon feature, it'll simply ignore the favicon and the presence of a favicon won't affect that browser.