File Extension [.xpi]
April 27, 2009Firefox or Mozilla browser File Extension XPI archive file
This is basically a ZIP file that, when opened by the Firefox browser utility, installs a browser extension. This File Extension XPI applies to both Mozilla and Firefox browsers. then what are those add-ons? well , Add-ons are small pieces of software that can add new features or tiny tweaks to your Firefox. They can add new search engines or dictionaries in other languages, change the look of Firefox with a new theme, or much more.
when renaming an .xpi file you cannot usually change a file extension (like the XPI file extension) to one that your computer recognizes and expect the newly renamed file to be usable.
