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HyperDither is an OS X image processing utility that converts color or grayscale images to 1 bit black & white using a sophisticated dithering routine. Specifically, HyperDither implements the ?Atkinson? dithering filter.

Years ago, during the development of the first Mac, Bill Atkinson (of HyperCard, QuickDraw, MacPaint & now nature photography fame) discovered a very elegant dithering filter to convert greyscale image data to the 1 bit black & white Mac video display. The dithering produced by this routine was much higher quality than the now-a-days ubiquitous more...

What's New

Version 1.3:
  • 12.5%, 25% & 50% reduced views
  • Optimized PNG export -- tiny, loss-less files!
  • Several redraw bugs related to the view menu have been fixed.


Mac OS X 10.3 or later

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Current Version (1.x)


Downloads 6,336
Version Downloads 3,970
License Free
Date 18 Feb 2011
Platform OS X / PPC 32 / Intel 32
Price Free
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