Adding a favicon to your Joomla site is easy. All you need is the favicon.
ico file and a few simple steps.
Upload the favicon.ico file to your Joomla site. In the Site Administration area, under the Site Appearance tab, click on the Favicon button.
Once you have created your favicon image, you need to upload it to the root directory of your Joomla site. The root directory is the directory where your index.php file is located. If you are not sure where your root directory is, you can contact your Joomla host and they will be able to tell you.
Once you have uploaded your favicon image to the root directory of your Joomla site, you need to edit the index.php file and add the following code:
Replace “/favicon.ico” with the URL of your favicon image. Save and close the index.php file and your favicon should now be visible on your Joomla site!
In the Favicon dialog box, select the favicon.ico file from your site and click OK.