[wp-trac] [WordPress Trac] #36684: CMYK profile images do not render in Microsoft Edge/IE/Windows Photos (was: Image crunched does not render in Microsoft Edge/IE/Windows Photos)

[WordPress Trac]

#36684: CMYK profile images do not render in Microsoft Edge/IE/Windows Photos
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 Reporter:  lxxiii             |       Owner:  (none)
     Type:  defect (bug)       |      Status:  reviewing
 Priority:  normal             |   Milestone:  Awaiting Review
Component:  Media              |     Version:  4.5
 Severity:  normal             |  Resolution:
 Keywords:  close 2nd-opinion  |     Focuses:
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Changes (by desrosj):

 * keywords:   => close 2nd-opinion
 * owner:  markoheijnen => (none)
 * milestone:   => Awaiting Review


Comment:

 Seems this one lost a milestone somewhere along the way.

 I've done some testing, and it seems that generated image sizes are
 maintaining a CMYK color model. I do recall encountering this myself at
 some point along the road in the past, and changing the image to RGB fixed
 the issue.

 I can't seem to find any official documentation of a problem with CMYK in
 IE/Edge, but in my testing so far, it seems that CMYK model images no
 longer have issues in Microsoft Edge (all versions of IE are no longer
 supported by WordPress). I tested on Windows 10, and was able to go back
 and test Edge 18 (which is pretty old) and Edge 80-99 (more modern
 versions), and all of these successfully rendered CMYK model images.

 Because nothing is technically broken now, I almost lean towards closing
 this as a `wontfix`.

 Reviewing the Slack conversations linked above, it did seem that there was
 general agreement that images generated for use on screen should have an
 RGB model (which I do agree with). My hunch is that there would be a
 difference in file size between RGB and CMYK images, but that's not based
 on any actual data.

 I'm also not familiar with how color profiles work in WebP format images.
 With #55443 aiming to make WebP the default image format, It's worth
 exploring. @adamsilverstein do you have any insight here?

 I'm adding the `close` suggestion pending a `2nd-opinion`.

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Ticket URL: <https://core.trac.wordpress.org/ticket/36684#comment:8>
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