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ZopfliPNG fails optimizing specific image #75

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petrdiblik opened this issue Oct 9, 2015 · 1 comment
Open

ZopfliPNG fails optimizing specific image #75

petrdiblik opened this issue Oct 9, 2015 · 1 comment

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@petrdiblik
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Hi,
ZopfliPNG fails optimizing the attached indexed+trns image because it tries to convert it to truecolor+alpha which is bigger than the input.
unable to optimize by zopflipng
(PNGOUT can optimize the image because it keeps the input color type.)
Could you please improve the color type selection algorithm?
Thanks.
@snoack
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snoack commented May 10, 2017

Also see #34.

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@snoack @petrdiblik