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JPGs created in Photoshop/Mac appear distorted on PCs

Jan 5, 2013 3:04 PM

Tags: #windows #jpg #photoshop_6

We use Creative Suite CS6 on Macs. Recently some (but not all) of our clients using PCs started reporting that JPGs we created for them appeared heavily artifacted, as saved at extremely low quality. (Screen grabs from their PCs confirm this.) When files are sent back to us from these users they look perfect on the Mac. When clients attempt to use these "suspect" JPGs on their websites they are glitched. This isn't an email issue (same result using YouSendIt). And since most PC-using clients do NOT have the problem, it's not strictly a platform problem. We haven't upgraded equipment or OS since the last time we generated JPGs for these same clients (without incident). Has anyone else had a similar problem? Any ideas? I don't even know where to begin to diagnose. The Adobe chat person vaguely suggested maybe it was hardware or software (duh).

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    Jan 5, 2013 1:45 PM   in reply to GMattingly

    One word: Flakey colo profiles. Well that's 3 words, but it is most likely the cause of this since it affects hardware accelerated decoding of JPGs in Windows itself as well. Have them reset their graphics configuration, make sure everything on your end is clean as well and you're not emebdding bad profiles...



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    Jan 5, 2013 3:07 PM   in reply to GMattingly

    JPEG files are the same, regardless of platform.


    But if someone transmitted the resource fork (containing just thumbnail data) by mistake, it might do what you describe.  Do the filenames start with a . , _, or % ?

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    Jan 5, 2013 6:01 PM   in reply to GMattingly

    Are you using a program like iPhoto where it hides the image in a folder and then just presents the thumbnail?  It sure sounds like the PC is viewing a thumbnail, and perhaps on the Mac it is referenced to the real image?

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    Jan 5, 2013 7:20 PM   in reply to GMattingly

    Again, the files are the same, and Photoshop hasn't changed it's JPEG code in a long time.


    Somewhere, there's something going wrong that you aren't telling us about.

    My only guess would be a third party plugin that is reading JPEG instead of Photoshop.

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