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So I have this PSD with several transparent layers. As I need to hand out the file for a professional printing, I export it through Photoshop (CS5) using the usual PDF/X-4:2008 PDF 1.4 profile to retain the transparency.

But the written PDF doesn't have any transparency :

  • when I open it under Adobe Reader (with the transparency rendering option set to on), it has a white background
  • when I open it under Photoshop, it also has that white background which means the transparency is not kept

So I guess there's something wrong with the layers as the profile used is the correct one, but I don't know what. Any hint ?

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The PDFx format does not support transparency. Why do you need transparency if this is for press? –  Scott Oct 30 '12 at 0:52
    
Logo printing on white clothes. Also, yes, the X/4 standard allows transparency : iso.org/iso/iso_catalogue/catalogue_tc/… –  shroom Oct 30 '12 at 0:59
    
Well, I get no transparency ever if a Photoshop file is saved as PDFx. This may be a shortcoming of Photoshop. Illustrator seems to save the transparency with no issue. –  Scott Oct 30 '12 at 1:08
    
Do you export (as you say in the text) or "save as" (as in the header)? Have you tried both? –  Ken Fyrstenberg Oct 30 '12 at 3:50
    
I used "Save as", you can't make a PDF with the "Export" option :) –  shroom Oct 30 '12 at 9:22

1 Answer 1

up vote 2 down vote accepted

After specifying the name of your file, you should get a Save Adobe PDF window with a set of options. At the top, under Adobe PDF Preset: choose [High Quality Print]. This will preserve your transparency settings.

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You can see what each preset does (including whether it flattens transparency or not) here: help.adobe.com/en_US/photoshop/cs/using/… –  Anne Nov 19 '12 at 22:53
    
I'll try that next time thanks :) Though it also says "This preset creating ISO PDF/X-4:2008 files supports live transparency (transparency is not flattened)", so I'm still clueless on why this doesn't work here. –  shroom Dec 6 '12 at 15:23

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