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

Disable or remove Add-ons

Extensions in Private Browsing

Find and install add-ons to add features to Firefox

Personalized extension recommendations

Filelink for Large Attachments

Recommended Extensions program

JavaScript settings and preferences for interactive web pages

Add-on signing in Firefox

Multi-Account Containers

Manage optional permissions for Firefox extensions on Android

Manage your extensions using the extensions button in the toolbar

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

Thunderbird add-ons - frequently asked questions

Permission request messages for Thunderbird extensions

Use Firefox VPN in Firefox

Use Firefox in another language

An extension changed my New Tab page or home page

Tips for assessing the safety of an extension

On-device AI models in Firefox

Use themes to change the look of Firefox

Upgrade your graphics drivers to use hardware acceleration and WebGL

Manage optional permissions for Firefox extensions

Cannot remove an add-on (extension or theme)

Manage extension shortcuts in Firefox

Send plugin crash reports to help Mozilla improve Firefox

Extension data collection

Why is there an OpenH264 plugin in Firefox?

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

Install themes to change the look of Thunderbird

Access your add-ons with a Mozilla account

Site Permission Add-ons

Get started with the Mozilla VPN extension

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

Facebook Container - Prevent Facebook from tracking you on other websites

How to add devices to your Mozilla VPN subscription

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

Uninstall Firefox for Android extensions

How to add the translate add-on to Firefox

Report extensions and themes for abuse

Change your location for a specific website

Orbit Frequently Asked Questions

Unable to install add-ons (extensions or themes)

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

How to Customize Toolbars

Installing an Add-on in Thunderbird

How to update add-ons

Built-in themes in Firefox - alternative to complete themes

How is Facebook Container different from Multi-account Containers?

Block add-ons in Firefox for Enterprise

Troubleshoot issues related to add-ons

Install the Firefox Relay extension on Firefox for desktop

Firefox Translations Add-on

Integrate Firefox Relay into the Firefox Password Manager

A program on your computer interferes with the Mozilla VPN extension

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

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

Get help with Firefox Developer Edition

What is search hijacking?

Facebook Container isn't working

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

Install system add-ons on Firefox for Enterprise

Review installed extensions

Lightbeam extension for Firefox is no longer supported

Unable to uninstall add-ons (extensions or themes)

Change your theme in Firefox Focus for Android

Change your theme in Firefox Focus for iOS

Recommended Firefox extensions for families and students

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?

Disable Mozilla VPN protection for a specific website

How will DNS work when using the VPN extension?

Manage the Mozilla VPN extension preferences

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