File Extension Database

Open XPI File

XPI file extension is used by XPInstall (cross-platform install) files. These files are most commonly used to distribute plugin extensions for Mozilla Firefox web-browser. To open XPI file just drag it into Firefox web-browser window. This will install a plugin located in XPI file

Normally XPI file is a ZIP archive that contains a number of other files in compressed format. Usually one of these files is install.js that contains main install script. These may also be other files that are referenced by this script. So if you want to open XPI file and view what is inside, you can just rename it to ZIP and open it using any unarchiver.

Since installer packages can change system configuration and install additional executable modules they can be used to spread computer viruses and trojans. We recommend that you only install packages from trusted sources and have up-to-data antivirus software running at all time.

How Can I Open XPI File on Windows

We researched and learned that the best way to open XPI file is to find a XPI file in question in Windows OS File Explorer and double click on it to launch the corresponding application.
If a XPI file is not opened in an application and you instead get a "Windows can't open a file" error message you should try looking for an application which can open the file in question.
If you know the application which can open XPI file then run it and see if there is a File->Open main menu option in the application.
If you don't know the application which function as XPI file opener then try to search online for "XPI viewer", "application to open XPI file" or "open XPI file" queries in the search engine you like.
Install the application you found and check if it can open XPI file

How Can I Open XPI File on Mac OS

We recommend to find a XPI file in question in Mac OS Finder and double click on it to launch the corresponding application.
If a XPI file is not opened in a Mac OS application and you instead get a "There is no application set to open the file" error message you can click on "Search App Store" in the error dialog and Mac OS will show you applications compatible with XPI file.
If you know the Mac OS application which can work as XPI file opener you can choose the "Choose Application..." option in the error box to associate the file extension and open XPI file in it.
If you don't know the application which can open XPI file then try to search for "XPI viewer", "application to open XPI file" or "read XPI file" queries in the online search engine you like.
Install the application you found and check if it can read XPI file

How Can I Open XPI File on Android

If you downloaded a XPI file on Android device you can open it by following steps below:

In the Android apps list on your Android device find "My Files" or "File manager" app and tap to start it.
Tap on "Downloads" folder inside the app.
You should see your downloaded XPI file in that folder.
Tap on the file. If Android device supports opening the file you downloaded it will open in the corresponding app.
If file does not open you can look for the corresponding app that can open the file by searching Android App Store for the "XPI".
If you cannot open the file with the apps from Android App Store it is possible that the file could only be opened on desktop platforms such as Windows or Mac OS. Try searching for "XPI viewer", "XPI file reader" online and see if any desktop applications can open it.
It is also possible that the file you downloaded is outdated and is no longer supported.

How to Open XPI File on iPhone or iPad

To open XPI File on iOS device follow steps below:

We advies to open Files app on your iPhone or iPad device. You can find it by swiping down on the home screen and typing "Files" in the search bar.
Tap on the Downloads folder on the Files app home screen.
You will see all files that you recently downloaded. Tap on the XPI file to view it.
If you have the right app that can open it it will automatically launch and open your file.
If you don't have the app which can open it you need to serch Apple app store for "XPI". This way you can find apps which can open XPI files.
If this doesn't help it is possible that your file could be opened only by the desktop application. To find an app which can open it on desktop look for "XPI viewer" or "XPI file" online in your favorite search engine.