Download Firefox Systems and Languages What's New Privacy Give Firefox a tune up Refresh Firefox How does it work? Download a fresh copy Install and manage add-ons Add-ons let you customize and add features to Firefox. All All articles and threads In English Understanding the risks of installing self-hosted extensions Add-on Badges Permission request messages for Firefox extensions Personalized extension recommendations Tips for assessing the safety of an extension Recommended Extensions program Find and install add-ons to add features to Firefox An extension changed my New Tab page or home page Disable or remove Add-ons Refresh Firefox - reset add-ons and settings Extensions in Private Browsing Add-on signing in Firefox Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems Reporting extensions and themes for abuse Facebook Container - Prevent Facebook from tracking you on other websites Use themes to change the look of Firefox Built-in themes in Firefox - alternative to complete themes Manage extension shortcuts in Firefox Troubleshoot issues related to add-ons Manage your extensions using the extensions button in the toolbar Re-enable add-ons that were disabled when updating Firefox Firefox add-on technology is modernizing How to update add-ons Manage Optional Permissions for Extensions Cannot remove an add-on (extension or theme) Unable to install add-ons (extensions or themes) Frequently asked questions - Firefox add-on technology is modernizing Lightbeam extension for Firefox is no longer supported Access your add-ons with Firefox accounts Review installed extensions Recommended Firefox extensions for families and students Site Permission Add-ons