Installation

Note

Since Firefox removed the internal component that loads legacy extension, in order to install Tab Mix Plus, or any other legacy extension, you have to install 3rd party helper scripts.

Tip

If you are using Waterfox browser, it ships with a built-in Bootstrap Loader, so you only need to install the firefox-scripts configuration files if you use userChromeJS scripts. If you only restyle the browser with userChrome.css and run no scripts or legacy extensions, Waterfox’s built-in loader may be all you need.

Install Firefox Scripts

Firefox Scripts, the helper scripts that load legacy extensions, has its own documentation site. Start there for everything about the scripts:

• 

  Firefox Scripts Installation

  : set up with the installer or by hand with screenshots and per-OS paths.
• FAQ: safe mode, profiles, forks, security.
• Troubleshooting: what to check when something does not load.

Install Tab Mix Plus

Download XPI

Download xpi file from our download page to your local computer.
All Tab Mix Plus downloads are also located here

If you are using Firefox Beta, Developer Edition or Nightly we recommend using the latest Tab Mix Plus development build (tags with pre or test-build in the title). Note that the latest development build is compatible with all supported versions of of Firefox. (see Browser Compatibility)

Install XPI

To install the XPI file you have just downloaded:

1. Open Add-ons Manager tab (about:addons) and select Extensions.
   or Click the menu button ☰, click Add-ons and Themes and select Extensions.

2. In Add-ons Manager page click on the cog icon and select Install Add-on From File….

3. Alternatively, drag and drop the XPI file into the Add-ons Manager page.

4. The installation process should begin automatically, once it complete you should restart firefox.

   Note

   Some users report that their Firefox is not able to install or use Tab Mix Plus unless they set extensions.experiments.enabled to true in about:config.

Troubleshooting

Add-on appears corrupt

If you see this message when you try to install Tab Mix Plus, it means that Firefox Scripts is not installed properly. Repeat the installation steps on the Firefox Scripts site.

Tab Mix Plus stops working

If Tab Mix Plus stops working after Firefox update was installed or after you installed update of Firefox Scripts , follow these instructions

1. Uninstall Tab Mix Plus.
2. Reinstall the latest version of Firefox Scripts (see the installation page)
3. Open about:support page and click Clear startup cache… to force Firefox to load the installed scripts on the next startup.
4. Close Firefox again, wait 10 second, to make sure Firefox finished to clear the cache.
5. Open Firefox and reinstall latest Tab Mix Plus again.

extensions.experiments.enabled

Some users report that their Firefox is not able to install or use Tab Mix Plus unless they set extensions.experiments.enabled to true in about:config.

Profile Cache Issues

Sometimes the profile cache is not cleared when you install new version of Firefox, or new version of these scripts, this can cause problems with Tab Mix Plus.

First step will be to use firefox command to clear the profile cache:
Open about:support page and click Clear startup cache… to force Firefox to load the installed scripts on the next startup.

Danger

Don’t remove the profile in Root Directory, it will remove the profile and all your data.

You can try to clear your profile cache, go to ‘about:config’, find your profile, and follow the link to Local Directory where Firefox save your profile cache, and remove it.

Browser Compatibility

Tab Mix Plus is fully compatible with the following browsers:

• Firefox 128 ESR - Nightly
• Zen Browser 1.7+
• Waterfox 6.5.0+
• Floorp 11.9.0+
• LibreWolf 122+

For Pale Moon download Tab Mix Plus from here