A theme is a type of Firefox add-on which changes the visual appearance of Firefox. This article describes how to find, install and manage themes in Firefox.

What are themes?

A theme changes the appearance of Firefox, such as the color scheme and background image of the toolbars.

How to install themes

1. Click the menu button , click Add-ons and themes and select Get Add-onsRecommendations or Themes.
2. Scroll through the suggested themes or visit addons.mozilla.org to browse more themes.
   • Click on the theme's author to see more information about it.
3. To install a theme, click the + Install Theme button.

   

   • To install a theme from addons.mozilla.org, click on the theme and select the + Install Theme button on the resulting page.

   

4. Firefox will download the requested theme and may notify you that it has been installed.

Managing themes

How to switch themes

When several themes are installed:

1. Click the menu button , click Add-ons and themes and select Themes.
2. Select a theme in the list.
3. Click the ellipsis (3-dot) icon and then select the Enable button.

   

How to remove themes

When several themes are installed:

1. Click the menu button , click Add-ons and themes and select Themes.
2. Select a theme in the list.
3. Click the ellipsis (3-dot) icon and then select the Remove button.

   

Troubleshooting

• If you have a problem with Firefox, it may be caused by your theme or your theme's interaction with other add-ons. For troubleshooting instructions, see Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems.
• If you cannot install a theme, see Unable to install add-ons (extensions or themes).