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Question

How can I add HTML links to a downloaded GIF file?

Answer

The original means of defining a favicon was by placing a file called favicon.ico in the root directory of a webserver. This would then automatically be used in Internet Explorer's favorites (bookmarks) display. Later, however, a more flexible system was created, using HTML to indicate the location of an icon for any given page. This is achieved by adding two link elements in the <head> section of the document as detailed below. In this way, any appropriately sized (16×16 pixels or larger) image can be used, and although many still use the .ico format, other browsers now also support the animated GIF and PNG image formats.

— Source: Wikipedia (www.wikipedia.org)