Home : File Types : XPI File

.XPI File Extension

File TypeMozilla Installer Package

4.1 (495 Votes)
CategoryPlugin Files


This file is saved in a binary format, which requires a specific program to read its contents.

What is an XPI file?

An XPI file is a compressed installation archive used by various Mozilla applications, including Firefox, Thunderbird, and SeaMonkey. It may contain the primary components installed with the software, or may contain an software extension, such as a web browser plug-in.

More Information

XPI files can often be installed by simply dragging and dropping the file onto an open web browser window. The Mozilla software uses a component called XPInstall, (which includes Mozilla installer script) to install the XPI packages.

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Programs that open XPI files
Updated 9/7/2017

About XPI Files

Our goal is to help you understand what a file with a *.xpi suffix is and how to open it.

The Mozilla Installer Package file type, file format description, and Mac, Windows, and Linux programs listed on this page have been individually researched and verified by the FileInfo team. We strive for 100% accuracy and only publish information about file formats that we have tested and validated.

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