A favicon is a small icon that represents your website. It usually appears in the browser tab next to your page title, and it may also be shown in bookmarks, favorites, and search results.
Favicons help visitors recognize your site quickly and make your website look more professional and consistent with your branding. A favicon is typically a square image (commonly 16×16 or 32×32 pixels) in formats such as .ico, .png, or .svg.