A favicon is the tiny icon that appears in the tab next to your domain name. It used to appear in the address bar next to your domain name, but it has been removed from that location for security reasons. The one exception is the Microsoft Internet Explorer which still shows the favicon next to the address in the address bar. All the other browsers have removed the favicon from the address bar in order to prevent confusion with the state of website security.
If you have WordPress 4.3 and higher.
- Go to Appearance > Themes > Customizer
- Under Site identity section select your icon and upload. WordPress will do all the rest.
If you have an older version of WordPress.
We have implemented fallback for old WP installations in our themes. Search for favicon upload field at Theme settings page. This will work the same way.