Web, domains and email
favicon
In short and in plain language
A favicon is a small picture for your website.
The browser shows it in the tab and in bookmarks. Search engines sometimes show it next to the name of your site too.
It is added in the code of your pages.
Definition
A favicon is a small icon that identifies a website. Browsers show it in tabs and bookmarks, for example, and search engines sometimes show it next to the website's name in search results. It is linked in the head section of the pages; for display in search results, some search engines only evaluate the home page.