

Quantum also sports a new UI, the first major redesign since 2011's Firefox 4. Other changes ran down the page and onto the next in Firefox's release notes, and included active tab prioritization and a switch-over from legacy add-ons to those built using the WebAssembly API (application programming interface). "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," said Mayo, who credited the rendering engine's use of multiple processor cores for the boost.

The result: a significant speed increase. Along with other components, the engine was written in Rust, a programming language that originated in Mozilla's research group. Until now, Mozilla has always numbered, never named, its browser releases.įirefox Quantum boasts a revamped rendering engine with a new CSS (cascading style sheets) layout engine. The new browser's official designation is Firefox 57, just another in an every-six-week series of upgrades. "It's by far the biggest update we've had since we launched Firefox 1.0 in 2004," Mark Mayo, the Mozilla executive who oversees the browser, wrote in a Tuesday post to a company blog.

The browser maker also dumped Yahoo as Firefox's default search engine in the U.S., Canada and elsewhere, to return to Google, its partner - and primary financier - before a falling out three years ago. Mozilla today delivered a re-engineered Firefox, branded "Quantum," that it claims is twice as fast as just a few months earlier, and unveiled a re-drawn UI (user interface) with minimalist leanings.
