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Using Photoshop CS4 'Save for Web & Devices' -- I can tell with the Color Table how many colors are in use in the PNG-8, but am not sure how much downsampling to 256-colors is reducing the color depth of my image.

Cheers

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The only way to know is to try it and look at the results. – Mark Ransom Jun 15 '11 at 19:24
Pretty subjective -- any tools out there that count colors in PNGs? – Craig Jun 15 '11 at 22:27
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Counting colors won't help, as it won't tell you if the colors dropped are similar to the starting colors or not. You can subtract the 8-bit result from the original, but again it's going to be a subjective measure. – Mark Ransom Jun 15 '11 at 22:34
Try converting 24 to 8 and back to 24 then you can compare the results byte for byte. – Chris Nava Jun 21 '11 at 20:08
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migrated from stackoverflow.com Jun 21 '11 at 19:26

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