FAQ: How can I disable the “Remove Extension” menu item on Firefox?

FAQ

You can use the userChrome browser customization file to remove the “Remove Extension” menu item from the Firefox toolbar. Carefully follow these steps:

  • Locate your Firefox profile folder.
  • Create a new folder chrome inside your profile folder (if it doesn’t already exist).
  • Create a new file userChrome.css inside that folder with the following content: [label^='Remove Extension'] { display: none !important; }

You will need to close all Firefox windows and restart Firefox for it to take effect.

Note: If you’re using Firefox 69 or above, you’ll also need to go to about:config and ensure the toolkit.legacyUserProfileCustomizations.stylesheets preference is set to true (go here for more detailed instructions).