Mozilla Firefox Beta

Mozilla Firefox 58 Beta 4

Experience cutting edge features but with more stability. This new beta is also known as Firefox Quantum.

Windows/macOS/Linux
Freeware
37.4 MB
107,833
4.6 312 votes

Mozilla has switched Firefox to a rapid release development cycle which means New versions will come more frequently. The non-profit organization has promised to push out a New stable build every six weeks.

The latest Mozilla Firefox Nightly is now available for testing on Windows, Mac, Linux and Android. This beta includes performance enhancements that improve the browsing experience for users and enable Developers to create faster Web apps and websites.

What's New:

In October of last year we announced Project Quantum, our effort to create a next-generation engine. Firefox 57 includes many aspects of this project, so we’re calling this release Firefox Quantum.

Firefox Quantum is roughly 2X faster than Firefox 49 on the Speedometer 2.0 benchmark, thanks to its new CSS engine, its “just right” multi-process architecture, the way it prioritizes your active tab, and much more. Firefox Quantum also includes a visual refresh – Photon – that looks and feels right at home with modern operating systems. To learn more about Firefox Quantum, visit the Mozilla Blog.

New

  • Firefox is getting a major Visual Redesign (Photon project) activated on the Nightly channel and which will ship with Firefox 57 on the release channel.
  • Accessibility indicator will now appear in the title bar of the window when Accessibility services are enabled
  • Added support for Date/Time input
  • Allow users to manage the site data

Changed

  • Middle mouse paste in the content area on Unix systems no longer navigates to URLs by default
  • The browser's "autoscrolling" feature now uses asynchronous scrolling, similar to other input methods like mousewheel, providing a smoother scrolling experience.
  • Support more strict sandboxing protection (level 3) on Linux

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