A Favicon is a small icon associated with a website or a webpage. If you want to use a favicon with your SMF installation, then follow these steps in order to do so:
1. Create a 16×16 pixels OR 32×32 pixels image file using your favorite image editing program like Photoshop, GIMP or MS Paint. Now, name the file as favicon and save it with .ico extension.
2. Now, upload the file to the root directory of your installation (where your forum’s index.php file is located) by using FTP Clients like Filezilla, WinSCP etc.:
3. Once the favicon.ico is successfully uploaded to the root directory of your domain name, clear your browser’s cache and visit your forum again. You will now see a sweet little Icon in the URL Bar!
Note: You can also create and use an animated GIF (favicon.gif) image with 16×16 px (pixels) OR 32×32 px (pixels) as its dimensions.