Downloading Firefox extensions in XPI format allows for manual installation, offline deployment, or inspecting a developer's code. Whether you are an advanced user wanting to archive a specific version or a developer testing a build, understanding how to handle these files is essential.

Choose your download location, and the file will save with the .xpi extension.

: It packages all the necessary resources into a single file that Firefox can easily install or update. How to Download Firefox XPI Files

: It typically contains a manifest.json file (for modern WebExtensions) or an install.rdf (for legacy versions), along with scripts, images, and CSS files.