An XPI file is a Mozilla add-on package format used for installing extensions, themes, or other components in Firefox web browser. Opening it requires installation via Firefox.
How to Install an XPI File
Follow these steps to safely open and install an XPI file:
- Step 1: Ensure you have Firefox browser installed on your device. Download the XPI file from a trusted source to avoid security risks.
- Step 2: Launch Firefox. In the browser window, click the hamburger menu icon (three horizontal lines) in the top-right corner.
- Step 3: Navigate to "Add-ons and themes" or select "Extensions" from the menu to open the Add-ons Manager.
- Step 4: Drag the XPI file directly onto the Add-ons Manager page. Alternatively, click the gear icon or settings menu in the manager and choose "Install Add-on From File..." to browse and select the file.
- Step 5: Confirm the installation when prompted by Firefox. The extension or theme will activate automatically after installation completes.
After installation, access the add-on via Firefox tools or settings. Always verify add-on sources to prevent malware.
