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Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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Firefox
Add-ons, extensions, and themes

Add-ons, extensions, and themes

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

In English

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

JavaScript settings and preferences for interactive web pages

Recommended Extensions program

On-device AI models in Firefox

Multi-Account Containers

Upgrade your graphics drivers to use hardware acceleration and WebGL

Add-on signing in Firefox

Find and install add-ons to add features to Firefox

Manage your extensions using the extensions button in the toolbar

Extension data collection

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

An extension changed my New Tab page or home page

Cannot remove an add-on (extension or theme)

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

Manage optional permissions for Firefox extensions

Tips for assessing the safety of an extension

Use Firefox in another language

Get started with the Mozilla VPN extension

Manage extension shortcuts in Firefox

Use themes to change the look of Firefox

Built-in themes in Firefox - alternative to complete themes

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

How to update add-ons

Facebook Container - Prevent Facebook from tracking you on other websites

Site Permission Add-ons

Change your location for a specific website

Access your add-ons with a Mozilla account

How to add the translate add-on to Firefox

How is Facebook Container different from Multi-account Containers?

Report extensions and themes for abuse

Unable to install add-ons (extensions or themes)

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

Get help with Firefox Developer Edition

Why is there an OpenH264 plugin in Firefox?

What is search hijacking?

Troubleshoot issues related to add-ons

Firefox Translations Add-on

Disable Mozilla VPN protection for a specific website

A program on your computer interferes with the Mozilla VPN extension

Manage the Mozilla VPN extension preferences

Send plugin crash reports to help Mozilla improve Firefox

Flash-based videos and sound do not play correctly

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

Facebook Container isn't working

Review installed extensions

Lightbeam extension for Firefox is no longer supported

Recommended Firefox extensions for families and students

X-Mouse Button Control in Firefox 110

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

Orbit Frequently Asked Questions

Harmful add-on protection

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