How do I disable or remove browser extensions in Firefox?

@virginie 

To disable or remove extensions in Firefox, follow these steps:

1. Open Firefox and click on the menu button (three horizontal lines) in the top-right corner of the window.
2. Select Add-ons from the drop-down menu.
3. In the Add-ons Manager tab, you will see a list of installed extensions and themes.
4. To disable an extension, click the toggle switch next to it to turn it off.
5. To remove an extension, click on the three-dot button to the right of the extension and select Remove.
6. A confirmation window will appear, click on Remove to confirm.
7. The extension will be removed from Firefox.

Note: Some extensions cannot be removed while Firefox is running, you will need to restart Firefox to complete the uninstallation.