Use themes to change the look of Firefox

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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. Some types of themes can also change the buttons' appearance and can make Firefox look like a completely different program.

fx57 theme - Mac1
fx57_theme_Mac2

There are two types of themes available for Firefox:

  • Background themes - lightweight themes that can change the color scheme and background image of the Firefox toolbars.
background theme
theme2
  • Complete themes - more customizable than background themes, but larger to download.
complete theme
Note: Complete themes will stop being supported with Firefox version 57. For more information, please see Firefox Add-on Technology is Modernizing. All themes for Firefox version 57 and above are lightweight (background) themes. Complete themes are no longer supported. See Built-in themes in Firefox - alternative to complete themes.

How to install themes

  1. Click the menu button Fx89menuButton, click Add-ons and themes and select Get Add-ons.
  2. Scroll through the page until you find the Featured Themes section and click See all to browse through the themes. You can also use the search bar to look for a specific theme.
    themes fx29
    • To see what a background theme will look like before installing it, simply hover over it.
    • Click on a theme to see more information about it.
  3. If you see a theme you like, click the Add to Firefox button to install it.
  4. Firefox will download the requested theme and may ask you to confirm that you want to install it.
  5. Click Restart Now if it pops up. Your tabs will be saved and restored after the restart.

You can also search for more themes on addons.mozilla.org.

  1. Click the menu button Fx89menuButton, click Add-ons and themes and select Get Add-onsRecomendations 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.
    theme card add-ons manager
    • To install a theme from addons.mozilla.org, click on the theme and select the + Install Theme button on the resulting page.
    themes fx57 2
  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 Fx89menuButton, click Add-ons and themes and select Appearance.
  2. Select a theme in the list.
  3. Click the Enable button.
  4. Click the Restart now link if it pops up. Your tabs will be saved and restored after the restart.

How to remove themes

If you want to remove a theme, see Disable or remove Add-ons.

How to switch themes

When several themes are installed:

  1. Click the menu button Fx89menuButton, 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.
    enable add-on

How to remove themes

When several themes are installed:

  1. Click the menu button Fx89menuButton, 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.
    remove theme

Troubleshooting