If you download a file that has the extension .jpeg or .jfif, this will automatically rename it to a .jpg extension instead. Note that clicking the button in the Chrome bar doesn't do anything - this works completely in the background with no user interaction required. Icons made by Dirtyworks (https://www.flaticon.com/authors/dirtyworks) from Flaticon (https://www.flaticon.com). Licensed by Creative Commons BY 3.0 (http://creativecommons.org/licenses/by/3.0)