Mozilla Firefox specifications

What's new in version 13.0

  • When opening a new tab, users are now presented with their most visited pages
  • General performance improvements through incremental JavaScript garbage collection
  • The default home page now has quicker access to bookmarks, history, settings, and more
  • SPDY protocol now enabled by default for faster browsing on supported sites
  • Restored background tabs are not loaded by default for faster startup
  • Smooth scrolling is now enabled by default
  • 72 total improvements to Page Inspector, HTML panel, Style Inspector, Scratchpad and Style Editor
  • The column-fill CSS property has been implemented
  • Experimental support for ECMAScript 6 Map and Set objects has been implemented
  • Support for the CSS3 background-position property extended syntax has been added
  • The :invalid pseudo-class can now be applied to the element
  • The CSS turn unit is now supported


  • Publisher Mozilla
  • Publisher web site
  • Release date June 05, 2012
  • Date added June 05, 2012
  • Version 13.0


System requirements

  • Operating systems Mac OS X 10.7, Mac OS X 10.5 Intel, Mac OS X 10.6 Intel, Mac OS X 10.6, Mac OS X 10.5
  • Additional requirements Not available

Download information

  • File size 30.66MB
  • File name Firefox 13.0.dmg


  • Total Downloads 2,608,386
  • Downloads last week 9,861


  • License model Free
  • Limitations Not available
  • Price Not available