Unable to install add-ons (extensions or themes)
This article describes various reasons that would cause an add-on not to be able to be installed and what you can do to fix the issue.
Found 10000 results for themes for All Products
Tips for assessing the safety of an extension
Here are a few tips for assessing the safety of a third party extension.
Use themes to change the look of Firefox
A theme is a type of add-on that changes the visual appearance of Firefox. Learn how to find, install, and manage themes in Firefox.
Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems
Learn how to find out if an extension, theme or hardware acceleration is causing a Firefox problem and what steps you can take to fix it.
Change your theme in Firefox Focus for Android
Firefox Focus for Android has built-in light and dark themes so you can customize its appearance. You can also choose to have the theme follow your device theme.
Permission request messages for Thunderbird extensions
More information about each permission request you may encounter when installing an extension into Thunderbird.
Change your theme in Firefox Klar for Android
Firefox Klar for Android has built-in light and dark themes so you can customize its appearance. You can also choose to have the theme set by battery saver.
Disable or remove Add-ons
Extensions and themes are types of add-ons for Firefox. This article describes how to disable and remove add-ons in Firefox.
Find and install Add-ons on Firefox for Android
There are several extensions that you can install to add features to Firefox. Learn how to find, install and manage these add-ons to Firefox for Android.
Change your theme in Firefox Klar for iOS
Firefox Klar for iOS has built-in light and dark themes so you can customize its appearance. You can also choose to have the theme set by your system.