If you have a Firefox desktop shortcut with -no-remote -p appended to it (allows for running multiple instances of Mozilla apps), you can install the extension into whatever profile that you'd like if Firefox is not currently running. If Firefox is not running, it will start up and the Software Installation window appear > Install Now. If Firefox is running, you'll see the Software Installation window appear > Install Now.

Press Alt + f > o > browse to the extension > double click the extension (or select Open) > Install Now.ĭrag the extension to the instance of Firefox on the taskbar > wait for Firefox to appear > drop onto the browser window > Install Now.ĭrag the extension to the Firefox desktop (or other) program shortcut. With Firefox open, hit Ctrl+ o (or Cmd+ o) > browse to the extension > double click the extension (or select Open) > Install Now. > browse to the add-on > double click the add-on (or select Open) > Install Nowĭespite this, the following tips may still be better and/or quicker options for you. Open the Add-ons Manger > (Alt + t > a) click on the gear icon (Tools for all add-ons) > Install Add-on From File. Since Firefox 4, there has been an option to manually, and easily install saved add-ons. To find the location where add-ons are installed by default, press Alt + h > t (Help > Troubleshooting Information) > Profile Folder > Show Folder > extensions. Once you have downloaded the extension, there are several ways that you can install it. XPI file.Įxample: web_developer_tools_toolbar_button-0.9.5-fx.xpi Be sure not to change the file extension. If a download option isn't available, right click on the extension's install link and select 'Save Link As.'. For security reasons, it is highly recommended that you only save/install add-ons from the official Firefox Add-ons site, from an official Mozilla site, from a Mozilla repository on github, or from a trusted Mozilla employee or volunteer. If you have already saved an extension to your desktop (or other location), you can skip this.ĭownload the extension that you want to your computer. Some are quicker than others, you'll just have to pick the one that you like the most.įirst Things First - Install methods - Install a Firefox Theme Manually Here are a few quick and easy ways to install Firefox add-ons manually.

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