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Firefox 15 Released

Notice: This post is more than a year old. It may be outdated.

Firefox 15 has finally hit stable and been released to the wild.

Amongst the iterative changes rocking up in this release improvements to the memory usage of add-ons, and enhanced WebGL performance.

Version 3 of the SPDY (‘speedy’) networking protocol is also included – though not by default. The technology, developed by Google and on its way to becoming a web standard, aims to ‘reduce web page load latency and improve web security.’

To enable SPDY v3 in Firefox 15 go to about:config and search ‘SPDY’. 

A full list of changes can be read online @

Firefox 15 will ship as the default browser in Ubuntu 12.10.

No PDF Reader

The HTML5 PDF reader included in earlier beta releases of Firefox 15 has not been included in the final release.

Several bugs were not fixed in time for the release of FF15 but chances are it  will form part of the Firefox 16, due early October.


As with all Firefox updates Ubuntu users will be automatically upgraded through Update Manager at some point in the coming days – no need for additional PPAs.