Add-ons, extensions, and themes

Enhance product functionality with add-ons, extensions, and themes.

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About Add-on Badges

About permission request messages for Firefox extensions

Understanding the risks of installing self-hosted extensions

Extensions in Private Browsing

Disable or remove Add-ons

Personalized extension recommendations

Find and install add-ons to add features to Firefox

Manage optional permissions for Firefox extensions on Android

Recommended Extensions program

On-device AI models in Firefox

JavaScript settings and preferences for interactive web pages

Add-on signing in Firefox

Permission request messages for Thunderbird extensions

Filelink for Large Attachments

Upgrade your graphics drivers to use hardware acceleration and WebGL

Extension data collection

Get started with the Mozilla VPN extension

Why does Mozilla disable some add-ons from running in Firefox?

Use themes to change the look of Firefox

Tips for assessing the safety of an extension

Thunderbird add-ons - frequently asked questions

Cannot remove an add-on (extension or theme)

Manage your extensions using the extensions button in the toolbar

An extension changed my New Tab page or home page

Manage optional permissions for Firefox extensions

Site Permission Add-ons

Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems

Facebook Container - Prevent Facebook from tracking you on other websites

How to add devices to your Mozilla VPN subscription

How to update add-ons

Uninstall Firefox for Android extensions

Installing an Add-on in Thunderbird

Access your add-ons with a Mozilla account

Multi-Account Containers

Install the Firefox Relay extension on Firefox for desktop

Recommended Firefox extensions for families and students

Disable Mozilla VPN protection for a specific website

Send plugin crash reports to help Mozilla improve Firefox

Remove a toolbar that has taken over your Firefox search or home page

How to Install and Use another Language in the Dictionary on Thunderbird

How to Customize Toolbars

Why is there an OpenH264 plugin in Firefox?

Facebook Container isn't working

Manage extension shortcuts in Firefox

Firefox Translations Add-on

Change your location for a specific website

A program on your computer interferes with the Mozilla VPN extension

Orbit Frequently Asked Questions

Unable to install add-ons (extensions or themes)

Re-enable add-ons that were disabled when updating Firefox

Flash-based videos and sound do not play correctly

Certificates

Add-Ons FAQ

How can I digitally sign and encrypt emails?

Installing and Using another Language in the Dictionary

Use Firefox in another language

Get help with Firefox Developer Edition

What is search hijacking?

Why do Java, Silverlight, Adobe Acrobat and other plugins no longer work?

Built-in themes in Firefox - alternative to complete themes

How to add the translate add-on to Firefox

How is Facebook Container different from Multi-account Containers?

Report extensions and themes for abuse

Install themes to change the look of Thunderbird

Unable to install add-ons (extensions or themes) in Thunderbird

Install system add-ons on Firefox for Enterprise

Block add-ons in Firefox for Enterprise

Review installed extensions

Lightbeam extension for Firefox is no longer supported

Troubleshoot issues related to add-ons

Unable to uninstall add-ons (extensions or themes)

Change your theme in Firefox Focus for Android

Change your theme in Firefox Focus for iOS

X-Mouse Button Control in Firefox 110

Install the Firefox Relay extension in Firefox for Android

Why aren’t my add-ons working on some websites?

Integrate Firefox Relay into the Firefox Password Manager

How will DNS work when using the VPN extension?

What to do if another extension interferes with the Mozilla VPN extension

Manage the Mozilla VPN extension preferences

Install the Thunderbird Pro Add-on in Thunderbird Desktop

Harmful add-on protection

Support for add-ons using Experiment APIs in Thunderbird

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