You can very easily add a favicon to your Joomla! site.
Here are some simple steps...
- The default favicon is located in the "images" directory of your Joomla! installation.
- Remove the default icon from your site, and upload your new icon in its place.
- You can use this favicon generator to upload and create your own personal favicon.ico
- You may need to place this line of code in your template between the <head> </head>
<link rel="shortcut icon" href="images/favicon.ico" />