Find and install Add-ons on Firefox for Android

Swipe to the left and tap the Tools button located on the bottom, right side of the screen.

On the Preferences page, select the add-ons "puzzle piece" button located at the bottom of the screen.

On Add-ons page, you can search for the add-ons you wish to install by typing in the search box. Select the add-on of your choice and either "Go to Page" to read more about the add-on, or select Add to Firefox to install. Once you install, you will be asked to restart for it to appear. You can also search for the latest updates to your existing add-ons by selecting the Update button located in the top, right corner of the screen.

Once an add-on is installed, you can select it in your add-ons manager to Disable or Uninstall the add-on.