A favicon is an image or small icon (often a logo) associated with a particular website. This icon makes your website identifiable on bookmarks/favorites bars or when a user has multiple tabs open. Plus, it makes your site look more professional!
Here are the steps to add or change your website's favicon.
1. From the website editor home screen, click on the SEO and metadata tab that is under the Website section in the left pane.
2. Under the Search engine optimization section in the right pane, click Choose from library below Favicon.
3. Choose your image from the library or upload a new one. Then click Continue, then Save to update the changes.
4. Make sure to click the purple Publish button in the top right of your screen to update these changes on your website!
You can use http://www.favicon-generator.org/ to generate a favicon if you don’t have one!