A Favorites Icon, also known as a favicon, is an often overlooked branding tool that every website should have. It is displayed differently by each browser, but in most cases is shown to the left of the URL or opened Tab. It also always appears in the Favorites Folder or Bookmarks, so people can easily find the site they are looking for.
A favicon can only be 16×16 pixels, which is very small. Here are some tips to keep in mind when designing your favicon: