The main highlights here are the comprehensive JavaScript debugger which is capable of targeting multiple browsers and the support for the CSS Grid which, along with other built-in tools (Style Editor, for example) makes it simple for you to create rich web layouts in the browser. Making life better for web developers, one of the top priorities of this new version of FirefoxДЇurthermore, there's a new set of developer tools available, on top of the ones you're already accustomed to from past versions of Firefox. For instance, Firefox Quantum is better equipped to block online trackers, as well as at keeping your privacy untouched than the generation it replaces. Indeed, performance was one of the main goals, but you'll be pleased to hear that various privacy-related improvements have been added as well. The effects of those tons of performance improvements are pretty obvious from the first few seconds you start browsing. The star of the show is the new, next-generation engine which now allows Firefox to make the most of all your computer's CPU cores. New and improved engine is sure to win back former Firefox users Instead, the developer version is now based on the Beta channel. One of the main differences between the latest developer editions and the ones from the past is that they're no longer based on the Aurora channel which has now been scrapped. Firefox Developer Edition, also called Firefox Quantum, allows users to get their hands on the latest features and development tools which will eventually find their way into the mainstream, stable versions of Firefox.

Firebox offline editor tool