Opening XPI files

Did your computer fail to open a XPI file? We explain what XPI files are and recommend software that we know can open or convert your XPI files.

What is a XPI file?

XPI files are used and created by a variety of Mozilla applications, including the Thunderbird email application and the Firefox Web browser. The files that contain the .xpi extension are very similar to zip files. When they are opened the files "decompress" and install a browser extension into the Mozilla browser or Thunderbird application.

To install an XPI file a user can simply drag and drop the file into the interface of the application the file is associated with. Common add-ons that use the .xpi extension include the Alexa and PR add-on indicator and other plug-ins that are essential to the operation of the Mozilla software applications.

Try a universal file viewer

In addition to the products listed above, I would suggest that you try a universal file viewer like Free File Viewer. It can open over 200 different types of files - and very likely yours too! Download Free File Viewer.

By Prof. Jones (The File Expert)

Chief Content Editor and File Expert

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