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What’s New

  • Mozilla Firefox 3.5 Official Release Notes
  • Portable edition has been also provided since now. It will create a profile folder “Firefox (Profile)” if needed.
  • Firefox 3.5 is based on the Gecko 1.9.1 rendering platform, which has been under development for the past 9 months. Firefox 3.5 is an incremental release on the previous version with significant changes to improve web compatibility, performance, and ease of use
  • Support for the HTML5 <video> and <audio> elements including native support for Ogg Theora encoded video and Vorbis encoded audio. (Try it here!)
  • Improved tools for controlling your private data, including a Private Browsing Mode
  • Improved performance and stability with the new TraceMonkey JavaScript engine.
  • The ability to share your location with websites using Location Aware Browsing. (Try it here!)
  • Support for native JSON, and web worker threads
  • Improvements to the Gecko layout engine, including speculative parsing for faster content rendering
  • Support for new web technologies such as: downloadable fonts, CSS media queries, new transformations and properties, JavaScript query selectors, HTML5 local storage and offline application storage, <canvas> text, ICC profiles, and SVG transforms
  • My builds: Reduce memory usage by using jemalloc
  • My builds: Speed improvement by using Profile-Guided Optimization (PGO)

Firefox 3.5 community edition en_US (20090630)

Firefox 3.5 community edition zh_TW (20090630)

Firefox 3.5 community edition zh_CN (20090630)

Firefox 3.5 community edition ja (20090701)

Firefox 3.5 community edition de (20090701)

Firefox 3.5 community edition fr (20090701)

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