1. upcoming changes to the viewport meta tag for firefox mobile

    • by Christopher Blizzard • Mobile, Standards • 5 comments

    This is a guest post by Matt Brubeck who works on the Firefox Mobile team. The upcoming release of Mobile Firefox (Fennec) 1.1 features improved support for the <meta name="viewport"> tag. Previous version of Fennec supported the width, height, and initial-scale viewport properties, but had Read more…

  2. Fast JavaScript and Audio: Speech Synthesis in Your Browser

    • by Christopher Blizzard • Audio, Demo, Firefox • 10 comments

  3. Firefox 4: Better performance with Lazy Frame Construction

    • by Paul Rouget • DOM, Firefox 4, Performance • 40 comments

    This is a re-post from Timothy Nikkel’s blog. Lazy Frame Construction is new to Gecko and allows many DOM operations (appendChild, insertBefore, etc) to not trigger immediate reflows. This can vastly improve the interactive performance of very complex web pages. If you want to test Read more…

  4. Firefox, YouTube and WebM

    • by Christopher Blizzard • Featured Article, Firefox 4, HTML5, Standards, Video • 96 comments

    Five important items of note today relating to Mozilla’s support for the VP8 codec: 1. Google will be releasing VP8 under an open source and royalty-free basis. VP8 is a high-quality video codec that Google acquired when they purchased the company On2. The VP8 codec Read more…

  5. Firefox 4: -moz-any() selector grouping

    • by Paul Rouget • CSS, Feature, Firefox • 27 comments

    This is a re-post from David Baron’s blog. This feature has landed in Mozilla Central (trunk) and only available with a Firefox Nightly Build for the time being. Last night I landed support for :-moz-any() selector grouping. This allows providing alternatives between combinators, rather than Read more…

  6. Firefox 4: easier JS form handling with FormData

    • by Paul Rouget • FileAPI, JavaScript, XMLHttpRequest • 19 comments

    This feature has landed in Mozilla Central (trunk) and only available with a Firefox Nightly Build for the time being. XMLHttpRequest Level 2 (editor’s draft) adds support for the new FormData interface. FormData objects provide a way to easily construct a set of key/value pairs Read more…

  7. Getting involved with Account Manager

    • by Dan Mills • Firefox 4, Identity, Standards • 6 comments

    It’s been a couple of weeks since we originally posted about Account Manager and we’ve gotten a lot of feedback. We’ve got a few opportunities for people to get more involved with the project, listed below. Join us at the Account Manager Meet-up or at Read more…

  8. Firefox 4: the HTML5 parser – inline SVG, speed and more

    • by Christopher Blizzard • Firefox, HTML5, Performance, Standards, SVG • 66 comments

    This is a guest post from Henri Sivonen, who has been working on Firefox’s new HTML5 parser. The HTML parser is one of the most complicated and sensitive pieces of a browser. It controls how your HTML source is turned into web pages and as Read more…

  9. Revitalizing Caching

    • by Arun Ranganathan • Firefox, HTML5, Offline, Performance, Standards • 22 comments

    Apparently, there are only two hard problems in computer science: cache invalidation and the naming of things (or so Phil Karlton’s dictum goes). Earlier this month, we invited representatives of Twitter, Facebook, SproutCore, Palm’s webOS, Microsoft’s “Office On The Web”, Yahoo, and Google to talk Read more…