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• Quantum Up Close: What is a browser engine?

  A web browser is a piece of software that loads remote files and displays them locally, allowing for user interaction. Quantum is the code name for an project we’ve undertaken at Mozilla to massively upgrade the Firefox browser engine. In this post, we'll start from the beginning, by explaining the ...

  Posted May 09, 2017 by Potch

• Debugging Web Push in Mozilla Firefox

  Introduction This article is part of an ongoing series about using and working with WebPush and Mozilla’s WebPush service. This article is not meant to be a general guide, but instead offers suggestions and insight into best using the service. Some knowledge of Javascript, Python, or other technologies is presumed. ...

  Posted May 02, 2017 by JR Conlin

• Fathom: a framework for understanding web pages

  It’s time we went beyond a browser that just renders pages. On the modern web, trying to accomplish a simple task can get you buffeted by pop-overs, squinting at content crammed into a tiny column, and trying to suss out the behavior of yet another site’s custom widgets. To restore ...

  Posted April 26, 2017 by Erik Rose

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

  Firefox 53, available today, includes the following key new features and enhancements. Quantum Compositor Process on Windows One of the first pieces of Project Quantum, the Compositor Process, has arrived on Windows. Compositors are responsible for flattening all of the various elements on a webpage into a single image to ...

  Posted April 19, 2017 by Dan Callahan

• Simplifying Firefox Release Channels and Improving Developer Edition’s Stability

  Streamlining our release process and quickly getting stable new features to users and developers is a priority for Firefox. Taking a close critical look at our release channels, it became clear that Aurora was not meeting our expectations as a first stabilization channel. Starting on April 18, the Firefox Aurora ...

  Posted April 17, 2017 by Ali Spivak