save a cmyk image in jpeg

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Yiftach
Yiftach 2025-8-19，7:47
评论： Walter Roberson 2025-8-20，17:03
hi
i would like to save a cmyk image in jpeg
thanks!

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John D'Errico
John D'Errico 2025-8-19，12:38
No. Imwrite cannot save a CMYK image to JPG. However, it can save a 4 channel image to a PNG format. Then I would open the image in Photoshop, or your favorite image editing tool, and save it to a JPG format. An extra step, but it should be workable. A quick check online (since it has been 25+ years since I used Photoshop) did tell me that Photoshop can save an image as a CMYK JPG file.
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Walter Roberson
Walter Roberson 2025-8-20，17:03
Sorry, I do not know very much about scripting for Windows.

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Walter Roberson
Walter Roberson 2025-8-19，8:57
Saving jpeg with CMYK is not supported by imwrite() or any other Mathworks supported function.
There just might happen to be appropriate code in the File Exchange, but I would not count on it.

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