See also Improved pngnq and GUI for it.
Improvements
- Better handling of alpha channel when remapping and dithering — very transparent areas are smoother.
- Increased maximum histogram size — color of large images isn't degraded as much.
- Color “averaging” algorithm prefers very bright/dark or saturated colors — images don't look “washed out” as much.
- Added special handling of alpha channel in a few places — transparent areas of the image get less colors, leaving more for opaque areas.
- Command-line arguments don't require number of colors (256 is default) and support special arguments:
--(end of options) and-(read from stdin).
Download
Version 1.1.1, January 2009.
Binary for Mac OS X (Universal, 10.4 or newer)
Run it from Terminal:
/path/to/pngquant /path/to/file.png(you can use drag'n'drop instead of typing paths)GUI for Mac OS X (Universal, 10.5)
Source code (all platforms)
Example images
Mouse over images to see them on dark background.
pngquant 1.0 (old) | pngquant 1.1 (new) | |
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| Icicles 32 colors | ||
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| Redbrush flower 64 colors | ||
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| Horned Owl 128 colors | ||
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