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santhoshr29800103
santhoshr29800103
Known Participant
November 25, 2019
Answered

what is the differencee between PDFX1 and PDFX1a

  • November 25, 2019
  • 2 replies
  • 2152 views

Hi,

 

I have run the PDFX-1A conformace in Acrobat XI and Save it as new PDF. If i check the Custom tab in document properties i am getting two conformances.

1. GTS_PDFVersion: PDF/X-1:2001

2. GTS_PDFConformance: PDF/X-1a:2001

Why the above PDF/X-1:2001 is showing and what is it for?

 

 

Thanks,

Santhosh

    This topic has been closed for replies.
    Correct answer Test Screen Name

    No, you are getting only one conformance. PDF/X-1a. The reasons for this are historical. 18 years ago, you might have found a PDF/X-1 file that was not PDF/X-1a, but today only PDF/X-1a is still used (and that is considered almost obsolete, except by the people still using it). 

     

    There are two different keys here. I'm going to quote ISO 15930-1, the PDF/X-1a specification:

    "The value of the GTS_PDFXVersion key for files prepared in accordance with this part of ISO 15930 is (PDF/X-1:2001)... A PDF/X-1a conforming file shall be further identified using the GTS_PDFXConformance key in the Info dictionary... The value of the GTS_PDFXConformance key in a PDF/X1a conforming file shall be (PDF/X-1a:2001). "

    So your file is correct. Anything else would be wrong, and rejected.

    2 replies

    T
    Test Screen NameCorrect answer
    Legend
    November 25, 2019

    No, you are getting only one conformance. PDF/X-1a. The reasons for this are historical. 18 years ago, you might have found a PDF/X-1 file that was not PDF/X-1a, but today only PDF/X-1a is still used (and that is considered almost obsolete, except by the people still using it). 

     

    There are two different keys here. I'm going to quote ISO 15930-1, the PDF/X-1a specification:

    "The value of the GTS_PDFXVersion key for files prepared in accordance with this part of ISO 15930 is (PDF/X-1:2001)... A PDF/X-1a conforming file shall be further identified using the GTS_PDFXConformance key in the Info dictionary... The value of the GTS_PDFXConformance key in a PDF/X1a conforming file shall be (PDF/X-1a:2001). "

    So your file is correct. Anything else would be wrong, and rejected.

    santhoshr29800103
    santhoshr29800103Author
    Known Participant
    November 28, 2019

    Thanks for the detailed reply....

      G
      gkaiseril
      Inspiring
      November 25, 2019

      See the Wikiapedia PDF/X article for this information. It has to do with the embedding of fonts and the format of the colors.

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