In Firefox, these files are typically installed by dragging and dropping them into the browser window or via the Add-ons Manager .
An .xpi file is essentially a renamed ZIP archive . It contains a manifest file ( manifest.json or install.rdf ), scripts, and assets required for the browser to execute the extension's features. alilauta.xpi
If you have the file and want to verify its safety or functionality: In Firefox, these files are typically installed by