akino_germany Posted January 4, 2022 Share Posted January 4, 2022 (edited) If you open a PNG (rose_eciRGB.png) with an embedded ICC profile (eciRGB v2) and then save it as a PNG (rose_pdn.png), applications using libpng (like ImageMagick) complain about "invalid chromaticities" in the cHRM chunk. The embedded ICC profile is gone as well. This doesn't happen when saving as a JPEG. Edit: I'm using v4.3.6 but this has happened since at least v4.2.16 PS testImages> magick.exe identify .\rose_eciRGB.png .\rose_eciRGB.png PNG 70x46 70x46+0+0 8-bit sRGB 10840B 0.000u 0:00.000 PS testImages> magick.exe identify .\rose_pdn.png .\rose_pdn.png PNG 70x46 70x46+0+0 8-bit sRGB 9060B 0.016u 0:00.011 identify: cHRM: invalid chromaticities `.\rose_pdn.png' @ warning/png.c/MagickPNGWarningHandler/1746. Edited January 4, 2022 by akino_germany version information Quote Link to comment Share on other sites More sharing options...
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