PSD-File Preview shows wrong color, but inside Photoshop and when exporting to PDF/X, PNG is correc

[Oliver32739966qs6b]

Hi,

I want to send a design to print (new to creating stuff for print instead of web), so I created a CMYK-Project and everything went fine while working on it. But now I noticed, when I uploaded my PSD-File to OneDrive and Google Drive: the preview is significantly different to the colors of the files I exported as PDF/X and PNG, which are displayed as the correct colors were shown inside the Photoshop-Editor. I selected CMYK when exporting to PDF/X, so I'm really unsure why the .PSD-Preview is a faulty color? (the darker shade in the image is the correct one)

Is that just a faulty preview by OneDrive/GDrive because they can't use the PSD color space or something like that? Does someone know why this is happening?

[D Fosse]

Very few (if any) web browsers or consumer-oriented image viewers support CMYK at all. The files will display, but with random colors.

That said, there is no such thing as just "CMYK". You need to use the correct CMYK profile for the actual printing process, or you may get color shifts and other technical problems on press. The Photoshop default just happns to be US Web Coated (SWOP) v2, just because there has to be some default. Ask the printer which one to use.