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

Filelink for Large Attachments

Recommended Extensions program

Personalized extension recommendations

JavaScript settings and preferences for interactive web pages

Add-on signing in Firefox

Manage optional permissions for Firefox extensions on Android

Multi-Account Containers

Thunderbird add-ons - frequently asked questions

Manage your extensions using the extensions button in the toolbar

On-device AI models in Firefox

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

Use Firefox in another language

Permission request messages for Thunderbird extensions

An extension changed my New Tab page or home page

Upgrade your graphics drivers to use hardware acceleration and WebGL

Tips for assessing the safety of an extension

Use Firefox VPN in Firefox

Facebook Container - Prevent Facebook from tracking you on other websites

Manage optional permissions for Firefox extensions

Extension data collection

Use themes to change the look of Firefox

Cannot remove an add-on (extension or theme)

Manage extension shortcuts in Firefox

How to add devices to your Mozilla VPN subscription

Why is there an OpenH264 plugin in Firefox?

Installing an Add-on in Thunderbird

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

Get started with the Mozilla VPN extension

Install themes to change the look of Thunderbird

Site Permission Add-ons

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

Report extensions and themes for abuse

Send plugin crash reports to help Mozilla improve Firefox

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

Access your add-ons with a Mozilla account

How to update add-ons

Built-in themes in Firefox - alternative to complete themes

How to add the translate add-on to Firefox

Firefox Translations Add-on

Change your location for a specific website

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

Manage the Mozilla VPN extension preferences

Unable to install add-ons (extensions or themes)

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

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

Get help with Firefox Developer Edition

Uninstall Firefox for Android extensions

Block add-ons in Firefox for Enterprise

Install the Firefox Relay extension on Firefox for desktop

Orbit Frequently Asked Questions

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

How to Customize Toolbars

What is search hijacking?

Facebook Container isn't working

How is Facebook Container different from Multi-account Containers?

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

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

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?

Integrate Firefox Relay into the Firefox Password Manager

Disable Mozilla VPN protection for a specific website

How will DNS work when using the VPN extension?

A program on your computer interferes with the Mozilla VPN extension

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