Fix hIST chunk position to match W3C specification #759
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The hIST chunk was incorrectly positioned in the code. According to the W3C specification, the hIST chunk must appear before the first IDAT chunk and after PLTE (if present). This commit corrects the chunk positioning to comply with the specification.
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This will fix #758 I'm not sure I should commit the images from PngSuite. If I shouldn't, I will remove the images from this PR. |
svgeesus
approved these changes
Dec 3, 2025
Collaborator
No problem including them; the license allows reuse and modification. |
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The hIST chunk was incorrectly positioned in the code. According to the
W3C specification, the hIST chunk must appear before the first IDAT
chunk and after PLTE (if present). This commit corrects the chunk
positioning to comply with the specification.