How to Uninstall Extensions in Mozilla Firefox
Extensions are a type of add-on for Firefox that allows you to add new features to Firefox or modify existing ones.
This tutorial will show you how to uninstall an extension to remove it from Firefox for your account in Windows 7, Windows 8, and Windows 10.
If you are not able to remove an extension, see Cannot remove an add-on (extension or theme).
CONTENTS:
- Option One: Uninstall an Extension in Firefox from Extension's Icon
- Option Two: Uninstall an Extension in Firefox from Extensions Page
OPTION ONE
Uninstall an Extension in Firefox from Extension's Icon
1. Open
Firefox.
2. To the right of the address bar, look for the icon of the extension you want to uninstall. Right click or press and hold on the icon, and click/tap on
Remove Extension. (see screenshot below)
The extension's icon will only be available if the extension is currently enabled (turned on).
3. Click/tap on
Remove to confirm. (see screenshot below)
4. If prompted, click/tap on
Restart now to restart Firefox.
Your tabs will be saved and restored after the restart.
OPTION TWO
Uninstall an Extension in Firefox from Extensions Page
1. Open
Firefox.
2. Click/tap on the
Menu 
button, and click/tap on
Add-ons (Ctrl+Shift+A). (see screenshot below)
If you like, you could also enter about:addons into the address bar of Firefox and press Enter to directly open to Add-ons Manager settings.
3. Click/tap on the
Remove button for the extension you want to uninstall. (see screenshot below)
4. If prompted, click/tap on
Restart now to restart Firefox.
Your tabs will be saved and restored after the restart.
5. If you uninstalled the extension by mistake, you can click/tap on the
Undo link to add it back. (see screenshot below)
That's it,
Shawn