Favicons are used by web browsers on tabs, bookmarks, and elsewhere which help visually identify a website. WordPress makes it easy to add a site icon, which acts the same as a favicon. Adding a favicon as a site icon is much easier than generating a favicon.ico file, which is the standard file type for favicons.

Important: In order to use the site icon feature, your image must be square and at least 512 pixels in height and width. The image can be a .jpg, .gif, or .png file type.

Add a Site icon

1. Sign in to your WordPress dashboard.
2. Mouse over Appearance then select Customize.
   
3. Click Site Identity.
   
4. In the Site Icon section, click the Select site icon button. 
   
5. You will be taken to your Media Library. If you need to, upload the image to your Media Library.
6. Once your image is uploaded, select the image. Note: You will have an option to crop the image.
   
7. Click the Select button.
   
   Back on the Site Icon section, you'll see a preview of your Site Icon.
   
8. On the top of the Site Identity pane, click the Publish button.
   

Go back to the WordPress Index.