Enhance Firefox's functionality and appearance with add-ons
- Permission request messages for Firefox extensions More information about each permission request you may encounter when installing an extension into Firefox.
- Firefox add-on technology is modernizing Add-ons have been updated to make Quantum awesome. Here's what's changing for Firefox 57 and beyond.
- Add-on signing in Firefox Learn about add-on signing and what to do if an extension you want to use could not be verified for use in Firefox.
- Disable or remove Add-ons Extensions, themes, and plugins are all types of add-ons for Firefox. This article describes how to disable and remove add-ons in Firefox.
- Use themes to change the look of Firefox A theme is a type of add-on which changes the visual appearance of Firefox. Learn how to find, install, and manage themes in Firefox.
- Frequently asked questions - Firefox add-on technology is modernizing Add-ons have experienced big changes in Firefox 57+ (aka Firefox Quantum). Check out these frequently asked questions for more information.
- Reporting extensions and themes for abuse Discover what constitutes inappropriate content or behavior in an extension or theme, and see how to report any abuse you find.
- Extensions in Private Browsing You can set which Firefox extensions can run in private windows and which can't, when you install the extension or later on. Learn more.
- Find and install add-ons to add features to Firefox Extend Firefox with add-ons to add new features. Learn about the different types available and how to find and install them.