Browser Extensions

Extensions allow developers to add features to browsers and empower users to customize their browsing experience. Extensions for Firefox are built using the WebExtensions API, a Web-based framework that offers a powerful way to build extensions that can easily be ported to Chrome, Opera, and Edge.

Browse addons.mozilla.org

Firefox Browser Add-ons Wordmark

Explore the directory to find great extensions and themes for Firefox.

Follow us on Twitter

ext-twit.png

Official Twitter account of Firefox Add-ons

Forums

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Visit our community forums to get help with extension development and see important community announcements.

Browse addons.mozilla.org

Explore the directory to find great extensions and themes for Firefox.

Firefox Browser Add-ons Wordmark

Follow us on Twitter

Official Twitter account of Firefox Add-ons

ext-twit.png

Forums

Visit our community forums to get help with extension development and see important community announcements.

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