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renaming 8adcdb3 May 12, 2015
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  • Download and unzip (latest release desirable).
  • Rename the unzipped directory to umatrix
    • When you later update manually, replace the content of the umatrix folder with the content of the latest zipped version.
    • This will ensure that all the extension settings will be preserved
    • As long as the extension loads from same folder path from which it was originally installed, all your settings will be preserved.
  • Go to chromium/chrome Extensions.
  • Click to check Developer mode.
  • Click Load unpacked extension....
  • In the file selector dialog:
    • Select the directory umatrix which was created above.
    • Click Open.

The extension will now be available in your chromium/chromium-based browser.

Remember that you have to update manually also. For some users, updating manually is actually an advantage because:

  • You can update when you want
  • If ever a new version sucks, you can easily just re-install the previous one


Although uMatrix is a restartless addon, I found that installing a newer version over an older one often will glitch the installation. These steps always worked fine:

  • Download uMatrix.firefox.xpi (latest release desirable).
  • Uninstall current uMatrix if already installed
  • Quit Firefox completely
  • Launch Firefox
  • Drag and drop the previously downloaded uMatrix.firefox.xpi into Firefox

uMatrix settings are kept intact even after you uninstall the addon.

On Linux, the settings are saved in a SQlite file located at ~/.mozilla/firefox/[profile name]/extension-data/umatrix.sqlite.

On Windows, the settings are saved in a SQlite file located at %APPDATA%\Mozilla\Firefox\Profiles\[profile name]\extension-data\umatrix.sqlite.

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