How to install Firebug XPI

Written by laurel storm Google
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How to install Firebug XPI
Add development tools to your Firefox browser with Firebug. (Courtesy of the Mozilla Foundation)

The Firebug extension for Firefox provides a set of development tools you can use to troubleshoot and debug your websites. Normally, you can install Firebug with a few clicks either from its official website or through the Firefox add-on repository. If the computer you code on is not connected to the Internet or you need an older version of the extension, however, you can also install Firebug by manually adding its XPI package to Firefox.

Skill level:


  1. 1

    Download the Firebug XPI package and, if necessary, copy it to the computer where you want to install it. The download directory of the official Firebug website (see Resources) contains XPI packages for all versions of the extension starting with 1.0, including pre-release alpha versions. Alternatively, you can download the latest stable version from the extension's page on the Firefox add-on repository by right-clicking the "Add to Firefox" button and selecting "Save Link As."

  2. 2

    Launch Firefox, click the "Firefox" button and select "Add-ons" to open the Add-ons Manager. Click the "Gear" icon and select "Install Add-on From File."

  3. 3

    Browse to the location where you saved the XPI package and double-click it to load it into Firefox and bring up the Software Installation window. Click "Install Now" to finish the installation process.

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