April 20, 2017: Behind-the-scenes with Firefox 53, plus big Dev Edition news

Firefox 53: Quantum Compositor, Compact Themes, CSS Masks, and More

Today’s release of Firefox includes the first significant piece of Project Quantum, as well as various visible and the under-the-hood improvements.

We’re building a next-generation browser engine that takes full advantage of modern hardware, and shipping one of the first important pieces of this effort – what we’ve referred to as the “Quantum Compositor”.

Read about what’s new in Firefox 53



Other News

Simplifying Firefox Release Channels and Improving Developer Edition’s Stability


Read about what’s changing in pre-release versions of Firefox >>

Replace Bootstrap Layouts with CSS Grid


See what it takes to replace an existing grid framework with CSS Grid >>

Hacking & Contributing to Servo On Windows


Why running Servo on Windows was so complicated… and how it’s now so simple >>


💡 DevTools: Did you know?

The Memory tool lets you take a snapshot of the current tab’s memory heap. It then provides a number of views of the heap that can show you which objects account for memory usage and exactly where in your code you are allocating memory

Read more about the Memory tool >>


On MDN

    1. Drawing graphics, from the Scalable Vector Graphics (SVG) language, to APIs for drawing on HTML <canvas> elements
    2. Just getting started? Check out common questions about the web
    3. Want to search MDN from your address bar? We have an add-on for that!

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