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

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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

Personalized extension recommendations

Disable or remove Add-ons

On-device AI models in Firefox

Find and install add-ons to add features to Firefox

Recommended Extensions program

Add-on signing in Firefox

JavaScript settings and preferences for interactive web pages

Multi-Account Containers

An extension changed my New Tab page or home page

Manage your extensions using the extensions button in the toolbar

Manage optional permissions for Firefox extensions

Extension data collection

Upgrade your graphics drivers to use hardware acceleration and WebGL

Tips for assessing the safety of an extension

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

Get started with the Mozilla VPN extension

Facebook Container - Prevent Facebook from tracking you on other websites

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

Use Firefox in another language

Cannot remove an add-on (extension or theme)

Use themes to change the look of Firefox

Manage extension shortcuts in Firefox

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

Site Permission Add-ons

Disable Mozilla VPN protection for a specific website

A program on your computer interferes with the Mozilla VPN extension

Why is there an OpenH264 plugin in Firefox?

How to update add-ons

Integrate Firefox Relay into the Firefox Password Manager

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

Access your add-ons with a Mozilla account

Built-in themes in Firefox - alternative to complete themes

How to add the translate add-on to Firefox

Firefox Translations Add-on

Recommended Firefox extensions for families and students

Change your location for a specific website

Harmful add-on protection

Send plugin crash reports to help Mozilla improve Firefox

Flash-based videos and sound do not play correctly

What is search hijacking?

Facebook Container isn't working

How is Facebook Container different from Multi-account Containers?

Report extensions and themes for abuse

Review installed extensions

Lightbeam extension for Firefox is no longer supported

Troubleshoot issues related to add-ons

X-Mouse Button Control in Firefox 110

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

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

Orbit Frequently Asked Questions

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