# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

.XPI File Extension

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Mozilla Installer Package Icon
File TypeMozilla Installer Package
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Rare Uncommon Average Common Very Common
CategoryPlugin Files
File Format Description

Compressed installation archive used by various Mozilla applications, including Firefox, Thunderbird, and SeaMonkey; may contain the primary components installed with the software, or may contain an software extension, such as a Web-browser plug-in.

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.

Program(s) that open .XPI files
Updated 1/17/2012