Firefox 9 Released, Up To 30% Faster JavaScript Rendering [News]

Tim Brookes 23-12-2011

Firefox 9 Released, Up To 30% Faster JavaScript Rendering [News] firefox logoMozilla has released the latest version of its popular Firefox web browser, with improvements to the JavaScript rendering engine that could yield speed bumps of 30% over the previous release. According to Mozilla, the new Type Interface feature in the browser’s SpiderMoney JavaScript engine integrates with the existing compiler to deliver more efficient code in less time.


Other highlights of the release include Mac OS X Lion support, with Firefox for OS X now featuring a two-finger swipe gesture for navigating between websites. Also new for the Mac version is an enhanced Lion-friendly user interface, which also makes surfing the web with multiple monitors more straightforward.

Firefox 9 Released, Up To 30% Faster JavaScript Rendering [News] firefox9 js speed

Android users will also see an update to the browser’s mobile edition, with the latest release taking advantage of tablets and their increased screen size. The browser has now been optimized for tablet devices, with support for swiping, a tablet-friendly UI and new HTML5 form validation.

The desktop version has been given plenty of tweaks under the hood as well. Detecting a user’s Do Not Track preference using JavaScript is now possible and support for CSS, HTML5 and MathML has been improved. For the full list of changes, check out the Firefox 9 release notes.

Download: Firefox Desktop (Windows, Mac & Linux) @
Download: Firefox for Android @ Android Market


Source & Image: Mozilla Blog

Related topics: Mozilla, Mozilla Firefox.

Affiliate Disclosure: By buying the products we recommend, you help keep the site alive. Read more.

Whatsapp Pinterest

Leave a Reply

Your email address will not be published. Required fields are marked *

  1. Car Insurance
    December 28, 2011 at 3:52 pm

    My biggest problem with Firefox's new rapid release cycle is add-on upgrading.

  2. Mike
    December 23, 2011 at 10:57 pm

    Firefox 9 is 30% faster then Firefox 8, however it's still much slower then Chrome. I just did a benchmark and it wasn't even close.

  3. Mohamed Tair
    December 23, 2011 at 5:22 pm

    Thanks for the Giveaway.
    I Use Firefox :p

  4. Afaq
    December 23, 2011 at 9:35 am

    I have already started using it and i guess its new version 9.1 is also available now. Btw i didn't notice any increase but hope it must be doing so in the background. :D

  5. Joel Lee
    December 23, 2011 at 6:53 am

    My biggest problem with Firefox has been the gradual slowdown and bloat over the years--performance hitting, memory leaking and resource hogging. I'll give Firefox 9 another shot, hoping that it runs as fast as it once did.

  6. Sheila Warner
    December 23, 2011 at 5:34 am

    The changes are subtle but it's good to see that memory usage is being optimized and the stability issues fixed with subsequent versions.