Firefox Quantum

New. Fast. Fierce.

Launches November 14, 2017. Sign up to stay in the know and get launch updates.

2x faster

Powered by a new, cutting-edge engine, Firefox has doubled its speed from last year. Because the Internet waits for no one.

Lean, mean speed machine

Firefox Quantum’s new engine uses 30% less memory than Chrome, so other programs won’t slow down during browsing. Now that’s a win-win.

Beautiful, intelligent design

Get the job done… faster

  • New Tab

    Search across multiple sites, view your top pages and discover new content.

  • Library

    Enjoy everything you’ve saved to Firefox while browsing in one, easy place.

  • Extensions

    Personalize Firefox with your favorite extras that help you do you.

  • Mobile Browsing

    Access your bookmarks, open tabs and passwords across all your devices.

Powerful privacy

You’re in control of your online information. Use Firefox Private Browsing to block ads with trackers for extra peace of mind… and pages that load up to 44% faster.

Browse for good

Firefox is backed by the non-profit Mozilla, who keeps the Internet healthier through programs that support tech education for girls, create trust around factual news, bring civility to the comments section and more.