1. Getting snappy – performance optimizations in Firefox 13

    • by Lawrence Mandel • Firefox, Performance • 44 comments

    Back in the fall of 2011, we took a targeted look at Firefox responsiveness issues. We identified a number of short term projects that together could achieve significant responsiveness improvements in day-to-day Firefox usage. Project Snappy kicked off at the end of the year with Read more…

  2. Firefox in 2011 – Firefox plans for 2012

    • by Robert Nyman • Add-ons, Aurora, Featured Article, Firefox, Performance, SPDY • 140 comments

    A lot of people are interested in Firefox, the progress that is being made and what we plan to do. Therefore, I’d like to outline the things we accomplished with Firefox in 2011, and what we have already done, and plan to do, in Read more…

  3. There is no simple solution for local storage

    • by Chris Heilmann • Featured Article, HTML5, IndexedDB, localStorage, Performance, Research • 94 comments

    TL;DR: we have to stop advocating localStorage as a great opportunity for storing data as it performs badly. Sadly enough the alternatives are not nearly as supported or simple to implement. When it comes to web development you will always encounter things that sound too Read more…

  4. Introducing Aurora 11 with tons of new features and improvements

    • by Robert Nyman • Audio, Aurora, DOM, Featured Article, Firefox, HTML5, Performance • 47 comments

    We have now released Aurora 11, soon to become Firefox 11, and wanted to cover all the the things we have improved in this Read more…

  5. Faster Canvas Pixel Manipulation with Typed Arrays

    • by Paul Rouget • JavaScript, Performance • 21 comments

    Edit: See the section about Endiannes. Typed Arrays can significantly increase the pixel manipulation performance of your HTML5 2D canvas Web apps. This is of particular importance to developers looking to use HTML5 for making browser-based games. This is a guest post by Andrew J. Read more…

  6. Firefox 7 is lean and fast

    • by Mozilla Hacks and Nicholas Nethercote • Firefox, Firefox 7, Performance • 40 comments

    Based on a blog post originally posted here by Nicholas Nethercote, Firefox Developer. tl;dr Firefox 7 now uses much less memory than previous versions: often 20% to 30% less, and sometimes as much as 50% less. This means that Firefox and the websites you use Read more…

  7. Detecting and generating CSS animations in JavaScript

    • by Chris Heilmann • CSS, JavaScript, Performance • 5 comments

    When writing of the hypnotic spiral demo the issue appeared that I wanted to use CSS animation when possible but have a fallback to rotate an element. As I didn’t want to rely on CSS animation I also considered it pointless to write it by Read more…

  8. Aurora 7 is here

    • by louisremi • Aurora, CSS, Performance • 27 comments

    Keeping up the pace with our new development cycle, today we release Aurora 7. Enjoy its new features and performance improvements: CSS “text-overflow: ellipsis“, Navigation Timing API, reduced memory usage, a faster javascript parser, and the first steps of Azure, our new graphics API. text-overflow: Read more…

  9. Firefox 5 is here

    • by louisremi • CSS, Featured Article, Firefox, Firefox 5, HTML5, Performance, Release • 120 comments

    Today, three months after the release of Firefox 4, we release Firefox 5, thanks to our new development cycle. Developers will be able to create richer animations using CSS3 Animations. This release comes with various improvements, performance optimization and bug fixes. CSS3 Animations CSS Animations Read more…

  10. Doom on the Web

    • by louisremi • Canvas, Gaming, JavaScript, Performance • 14 comments

    Update: We had a doubt whether this port of the Open Source Doom respected its term of use. We decided to remove it from our Website before taking an informed and definitive decision. This is a guest post written by Alon Zakai. Alon is one Read more…