4/8 Bits Indexed+Alpha PNG?

Questions and postings pertaining to the usage of ImageMagick regardless of the interface. This includes the command-line utilities, as well as the C and C++ APIs. Usage questions are like "How do I use ImageMagick to create drop shadows?".
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goruka

4/8 Bits Indexed+Alpha PNG?

Post by goruka »

Hi! I´d like to know if is there any way in imagemagick to generate PNGs using indexed colors (4 or 8 bits indices) with palette data that supports varying alpha opacity (not just visible/invisible pixel).

Basically, take any image with alpha channel, and downsample to N colors WITH alpha and save to PNG. I know PNG supports this, but evertything i try to convert to indexed in imagemagick gets rid of the alpha..

thanks!
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fmw42
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Re: 4/8 Bits Indexed+Alpha PNG?

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