Meet the World’s Best Browser

With security, stability, speed and much more, Firefox is made for the way you use the Web. Free and easy to install!

What Makes Firefox the Best?

One Size Doesn’t Fit All

Everybody uses the Web differently, so why should your browser be exactly like the next person’s? Firefox has more than 6,000 add-ons to help you customize it to your exact needs, plus thousands of Personas to instantly change the way it looks.

View all personalization features.
Learn more about Firefox personalization.

More Ways to Keep You Safe

Keeping you safe while you surf is our top priority, which is why Firefox includes advanced anti-phishing and anti-malware technologies plus features like private browsing and “forget this site” to ensure your privacy.

Plus, our open source security process means we have experts around the globe working around the clock to keep you (and your personal information) safe.

View all security features.
Learn more about Firefox security.

Speed You Can Really Use

We’re constantly optimizing Firefox to be great for the way you use the web – things like making new tabs open up more quickly, or having the Awesome Bar provide results even faster. In the end, it’s about getting you where you need to go as quickly and easily as possible.

Firefox Performance: Fast - Faster - Fastest

Results of a SunSpider test on a Windows 7 machine

Firefox 3, Firefox 3.5, Firefox 3.6 performance chart
  • 3,198 ms
  • 1,188 ms
  • 995 ms!

View all performance features.
Learn more about Firefox 3.6’s performance upgrades.

* Based on the results of a SunSpider test of JavaScript performance on a Windows 7 machine.

Made for the Way You Use the Web

We’ve packed Firefox full of cool features to make sure you get the most out of the modern web. Whether it’s the Awesome Bar for convenience, instant site ID for security or a faster JavaScript engine for performance, our goal is deliver better browsing every step of the way.

View the top new features.

Awesome Bar

Making the Web Better

We believe the Internet is a public resource that must remain open and accessible to all. As public benefit software, every Firefox download supports the Mozilla mission of encouraging choice, innovation and opportunity on the Web.

Learn more about Mozilla's mission.

Take a Tour of Firefox Watch the Video

Awards

Firefox is great, but don’t just take our word for it:

See the Awards

Tips & Tricks

Get handy hints for beginning, intermediate or advanced Firefox users.

Learn Some New Secrets