[Solved] ColorSync: PNG file option "Reduce color depth if unused" if applied also fixing color profile accordingly ?
Posted: Mon Nov 21, 2022 6:45 pm
We confirmed this works correctly: ColorSync: GC correctly ignores RGB color profile embedded into grayscale image
Followup question: GraphicConverter 's PNG file format options has the option "Reduce color depth if unused" (see screenshot below).
1) If that option is activated and GC on save detects that an RGB image has grayscale pixels only, and hence reduced from 24bit to 8bit, does GC also adapt the PNG file's color profile information accordingly?
2) Or could you end up with an inconsistent file "grayscale image with RGB ICC profile"? As the one I happened to have in the linked issue.
Followup question: GraphicConverter 's PNG file format options has the option "Reduce color depth if unused" (see screenshot below).
1) If that option is activated and GC on save detects that an RGB image has grayscale pixels only, and hence reduced from 24bit to 8bit, does GC also adapt the PNG file's color profile information accordingly?
2) Or could you end up with an inconsistent file "grayscale image with RGB ICC profile"? As the one I happened to have in the linked issue.