A favicon, short for “favorite icon,” is a small, iconic image that appears in the browser tab or address bar of a website. It serves as a visual representation of the website and helps users easily identify and distinguish it from other open tabs. Favicons are typically square in shape and can be customized to reflect the branding or theme of the website. They not only add a touch of visual appeal to a website, but also provide a convenient way for users to quickly return to their favorite sites.