Extensions, themes and plugins are all types of add-ons for Firefox. This article describes how to disable and remove add-ons in Firefox.

Disabling and removing extensions

Disabling extensions

Disabling an extension will turn it off without removing it.

1. Click the menu button , click Add-ons and themes and select Extensions.
2. Scroll through the list of extensions.
3. Click the ellipsis (3-dot) icon for the extension you wish to disable and select Disable.the blue toggle for the extension you wish to disable.

   

To re-enable the extension, find it in the list of extensions and click the toggle for the corresponding extension. The toggle turns blue when enabled., click the ellipsis (3-dot) icon and select Enable (restart Firefox if required).

To disable extensions that have changed your New Tab, New Window or home page, see An extension changed my home page.

Removing extensions

1. Click the menu button , click Add-ons and themes and select Extensions.
2. Scroll through the list of extensions.
3. Click the ellipsis (3-dot) icon for the extension you wish to remove and select Remove.

   

Disabling and removing themes

Firefox comes with a Default theme and optional Light and Dark themes but you can add new themes to Firefox. For additional information, see Use themes to change the look of Firefox.

Disabling themes

Click the menu button , click Add-ons and themes and select Themes. You will see one Enabled theme and a list of Disabled themes.

When the Enabled theme is not the Default theme, you can disable it by clicking the ellipsis (3-dot) icon and selecting Disable.

This will enable the Default theme.

Removing themes

You cannot remove the Default, Light or Dark themes that come with Firefox but you can remove themes you've added to Firefox. To remove an added theme:

1. Click the menu button , click Add-ons and themes and select Themes.
2. Click the ellipsis (3-dot) icon that displays for the theme that you want to remove and then select Remove.

   

Disabling and removing plugins

Disabling plugins

Disabling a plugin will turn it off without removing it:

1. Click the menu button , click Add-ons and themes and select Plugins.
2. Scroll through the list of plugins.
3. Click the ellipsis (3-dot) icon and select Never Activate from the drop-down menu for the corresponding extension.

To re-enable the plugin, find it in the list of plugins, click the ellipsis (3-dot) icon and select Always Activate or Ask to Activate in the drop-down menu.

Removing plugins

Most plugins come with their own uninstall utilities to remove them from your computer. For help uninstalling some popular plugins, go to this list of articles and select the article for the plugin you want to uninstall.

• If you are not able to uninstall a plugin, see Manually uninstalling a plugin.

Troubleshooting

• If you are not able to remove an extension or a theme, see Cannot remove an add-on (extension or theme).
• For help diagnosing problems caused by extensions and themes, see Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems.
• For help diagnosing problems with the Flash plugin, see Flash Plugin - Keep it up to date and troubleshoot problems.
• See the general Troubleshooting add-ons article for more help.