This article needs to be updated. The reason given is: Significant portions of this content have not been updated since 2013. Most of this content is about old versions of Firefox compared with obsolete web browsers like Internet Explorer; some of the features listed here, like XUL extensions, have been removed from Firefox years ago. Features such as "find as you type" are expected and present in all major browsers now.. Please help update this article to reflect recent events or newly available information. (August 2020) | 
