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Color quantizer (http://x128.ho.ua/color-quantizer.html http://x128.ho.ua/color-quantizer.html) lets you use up to 12-bit (4096 colors). For command line, the a

by ashmud 12y ago

Color quantizer (http://x128.ho.ua/color-quantizer.html http://x128.ho.ua/color-quantizer.html) lets you use up to 12-bit (4096 colors). For command line, the author has TruePNG (http://x128.ho.ua/pngutils.html http://x128.ho.ua/pngutils.html).

mark-r 12y ago
That's interesting, since there isn't a 12-bit PNG format. Do they leave it in 24 bit then, and just rely on better compression due to fewer unique bit combinations?
- ashmud 12y ago
  It looks that way. Irfanview reports 24bpp for images saved when I selected > 256 colors in CQ.