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Add-ons, extensions, and themes

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

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Add-on Badges

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

Refresh Firefox - reset add-ons and settings

Find and install add-ons to add features to Firefox

Recommended Extensions program

Multi-Account Containers

Tips for assessing the safety of an extension

Filelink for Large Attachments

Manage your extensions using the extensions button in the toolbar

Manage optional permissions for Firefox extensions on Android

An extension changed my New Tab page or home page

Manage optional permissions for Firefox extensions

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

Cannot remove an add-on (extension or theme)

Upgrade your graphics drivers to use hardware acceleration and WebGL

I found a fake Firefox update

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

Add-on signing in Firefox

Permission request messages for Thunderbird extensions

Use themes to change the look of Firefox

Manage extension shortcuts in Firefox

How to add devices to your Mozilla VPN subscription

Thunderbird add-ons - frequently asked questions

Use Firefox in another language

Install themes to change the look of Thunderbird

Install the Pocket extension in your browser

Open Search

Why is there an OpenH264 plugin in Firefox?

What is search hijacking?

Access your add-ons with a Mozilla account

Report extensions and themes for abuse

Facebook Container - Prevent Facebook from tracking you on other websites

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

How to Customize Toolbars

Uninstall Firefox for Android extensions

How is Facebook Container different from Multi-account Containers?

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

Recommended Firefox extensions for families and students

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

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

Add-Ons FAQ

Add Search Engine to Open Search

How can I digitally sign and encrypt emails?

How to Customize the New Mail Sound

Installing and Using another Language in the Dictionary

Installing an Add-on in Thunderbird

How to update add-ons

Built-in themes in Firefox - alternative to complete themes

How to add the translate add-on to Firefox

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)

Firefox Translations Add-on

Site Permission Add-ons

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

Unified Toolbar

userChrome.css and .js and userContent are unsupported

Using the Save to Pocket extension for Google Chrome

Use the Save to Pocket extension for Safari

Troubleshooting Save Button issues with Pocket Chrome extension

Using the Pocket Must Reads extension in Google Chrome

Using the Save to Pocket extension in Microsoft Edge

Using the Save to Pocket extension in Brave, Opera and Vivaldi

Integrate Firefox Relay into the Firefox Password Manager

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