optipng.exe -zw32k -quiet -o1 -strip all "z:\tmp\FileOptimizer_Input_tst.png" you don`t use -nx option - is it useless now? (lossless mode)
According to nx switch it combines: −nb Do not apply bit depth reduction. −nc Do not apply color type reduction. −np Do not apply palette reduction.
Indeed we are not worried about bit or color reduction if it does not induce a quality loss, right?
Thats exactly my point - you dont use this flag in lossless mode but should)
s exactly my point - you don
The thing here is that even if the image is reduced from 24 to 8 bpp, and the quality is exactly the same pixel-by-pixel, it will be lossless for me.
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According to nx switch it combines:
−nb Do not apply bit depth reduction.
−nc Do not apply color type reduction.
−np Do not apply palette reduction.
Indeed we are not worried about bit or color reduction if it does not induce a quality loss, right?
That
s exactly my point - you dont use this flag in lossless mode but should)The thing here is that even if the image is reduced from 24 to 8 bpp, and the quality is exactly the same pixel-by-pixel, it will be lossless for me.