Favicons are extremely useful to quickly identify the type of document you are opening or closing. They are commonly used by websites to indicate that a web page is offline or to notify a user that the document is a video or image.

But you can do a lot more with favicons, such as adding them to the bookmark bar of your browser, adding them to the notification area of your phone, adding them to your email signature, etc.

To change your favicon, you can download the “Bookmark Favicon Changer” extension for Google Chrome or the “Bookmark Favicon Changer” extension for Firefox.