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I Speak Cantonese... Many Chinese Web Pages are encoded in Big5-HKSCS or GB18030 but misdeclared as Big5 or GB2312 respectively. This is a patch for Mozilla series applications, including Mozilla, Firefox, Camino, Thunderbird and Sunbird. It forces them to decode Web pages as Big5-HKSCS or GB18030 encoded when they are identified or declared as Big5 or GB2312 encoded respectively. It has no side effects since Big5-HKSCS and GB18030 are supersets of Big5 and GB2312 respectively. Web pages encoded in other schemes are unaffected. [It was named "Force Big5-HKSCS for Big5 in Mozilla"]

What's New

Version 1.2:
  • Added detection of Gecko 2.0 based detection. It cannot handle yet.
  • Added GB2312 to GB18030 conversion.


  • Mac OS X 10.5 or later
  • Mozilla, Firefox, Camino, Thunderbird or Sunbird. (Firefox 4.0 is not supported yet.)

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I Speak Cantonese User Discussion


Current Version (1.x)


Downloads 5,117
Version Downloads 934
License Free
Date 14 Nov 2010
Platform OS X / PPC 32 / Intel 32
Price Free
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