How To: Disable/Remove Add-on in Mozilla Firefox.

1. Click on the Firefox, located at left upper corner of the web browser and go to "Add-ons".

or press "Alt", Menu bar pops-up, then go to Tools > Add-ons, or you can simply use shortcut key "Ctrl+Shift+A" to access add-on (extension) manger.

2. Find the add-on which you like to disable or remove from Mozilla Firefox. Click on "Disable" to disable the add-on temporarily or click "Remove" to remove the add-on permanently from the browser.

NOTE: Most of the add-ons requires restart for the actions to take effect.