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Firefox Quantum is over twice as fast as Firefox from 6 months ago, built on a completely overhauled core engine with brand new technology stolen from our advanced research group, and graced with a beautiful new look designed to get out of the way and let you do what you do best.
Firefox Quantum is the first web browser that actively taps into the power of your computer’s multi-core processor. Most browsers, like Chrome, aren’t coded with attention to multi-core chips. By not tapping into additional CPU cores most browsers may leave unused power lying idle.
Firefox Quantum aims to tap into those extra cores by putting them to work. This smart resource allocation means Firefox Quantum is technically the quickest browser on the market, depending on your computers benchmark.
The company says it’s ‘by far the biggest update we’ve had’ since 2004
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30% lighter than Chrome
Less memory usage means more space for your computer to keep running smoothly.
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Smooth browsing
From 10 to 1000 tabs open it doesn’t matter. Switching between tabs is faster than ever with Firefox’s new engine.
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Private Browsing
Firefox blocks online trackers while you browse and won’t remember your history.
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Tracking Protection
Some ads have hidden trackers that follow you online. Firefox Quantum puts a stop to the tracking!
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Faster Page Loading
Blocking ads and scripts that bog down browsing allows pages to load up to 44% faster.
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Screenshots
Uncomplicated simple screenshots. Take and share them directly from Firefox to any social platform.
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Built right into the toolbar, it’s the ultimate save-for-later feature. View your articles, videos and pages across any device.
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Gaming & VR
Engineered for next-gen gaming, Firefox has built-in support for WASM and WebVR.
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Customization Features
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Extensions
Customize Firefox with thousands of extensions like uBlock Origin and many more.
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Themes
Choose a new look from our theme categories or create your own. To customize your browsing experience.
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Toolbar
Set up Firefox your way. Drag and drop features in and out of your toolbar for easy access.
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Sync your devices
Seamlessly access passwords, bookmarks and more.
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Browse for good
Firefox is made by Mozilla, the non-profit champions of a healthy internet. Mozilla also tackles issues like privacy, misinformation and trolling by investing in fellowships, campaigns and new technologies designed to make the internet healthier.
The New Firefox Quantum By the Numbers
How many lines of code were touched?
75,342 files changed
4,888,199 lines were added
6,886,199 lines were changed
How many web extensions and compatible add-ons are available?
6,000 listed web extensions on AMO
Over 70% of add-on users already have at least one installed
How many responsiveness and performance bugs were fixed?
We triaged 369 bugs targeted specifically at performance and responsiveness.
How many bugs were filed and fixed for the user experience?
For the user experience, we filed and fixed 1,190 software bugs.
How many authors contributed code?
More than 700 authors contributed code to Firefox since the August 6th release.
How many volunteers contributed to code development?
80 contributors from all over the world, with nearly every time-zone represented in round-the-clock awesomeness!
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