A favicon is a small icon or logo displayed in the web browser’s address bar, tabs, bookmarks, or history, and that represents a web page, a website, or a brand. Favicons are usually 16×16 or 32×32 pixels in size, and can be created in various formats, such as ICO, PNG, or SVG. Favicons can enhance the recognition, visibility, and branding of web sites, and can improve the user experience, navigation, and trust of users.