Want to add extensions to Firefox so that you can customize various features in the browser. If you want to add an extension to Firefox, you can open Add-ons in the menu bar at the bottom of the browser, click Add on the page, and the extension can be added successfully. The following will introduce you to the specific operation method.
1. Open Firefox and click the "three horizontal lines" icon at the bottom.
2. In the menu bar that opens, click "Add-ons".
3. On the add-ons page, click the "+" icon on the right.
The above is how to add extensions to the mobile Firefox browser? For methods of adding add-ons and more related information and tutorials, please pay attention to this website.