Am 21.01.2017 um 08:40 schrieb Harry Yoon:
Hi Tilman, Thanks for the answer.


My knowledge of PDF is rather limited (I've been researching only for the last 
few days), but yes, I understand that I have to create a standards-compliant 
doc using the APIs. It seems that the requirements for PDF/X-1a are generally 
easy to satisfy, maybe except for CMYK colors. I am not sure why it is harder 
than other requirements, but I hear that ghostscript tool ps2pdf, for instance, 
cannot currently convert a ps/pdf to a fully compliant PDF/X-1a pdf because of 
this CMYK requirement. I presume that PDFBox does not have such limitations?


Just to follow up, can PDFBox be used to convert an existing pdf to PDF/X-1a 
conformant pdf (in addition to generating a PDF/X-1a conformant pdf from 
scratch)? If so, is there a facility in PDFBox to make this task easier? Or, is 
it just a manual process going through the original pdf (after parsing) and 
re-generating output pdf (enforcing the requirements)?

See the answer by Olaf Drümmer...

I see that in my own answer I sometimes wrote "A" where I meant "X" which made it even more confusing, but the link is correct, it does also explain a little bit about PDF/X.

For a tool, see here
https://www.callassoftware.com/files/attachments/.2562/callas_pdfToolBox8_LR_EN.pdf

Tilman



Thanks,

~Harry


________________________________
From: Tilman Hausherr <[email protected]>
Sent: Saturday, January 21, 2017 7:06:19 AM
To: [email protected]
Subject: Re: PDF/X-1a?

Am 21.01.2017 um 07:38 schrieb Tilman Hausherr:
Am 21.01.2017 um 00:11 schrieb Harry Yoon:
Hi,


I'm new to PDFBox. I'm currently trying to figure out how to generate
PDF/X-1a conformant PDF using PDFBox. I found some references related
to PDF/A validation using PDFBox, but none pertinent to PDF/X.


Is it possible to use PDFBox to generate PDF/X-1a compliant PDF docs?
Or, at least to validate PDF files against PDF/X-1a standards?
Yes it is possible to use PDFBox to generate PDF/A-1a compliant docs.
Just read the standard ( this https://en.wikipedia.org/wiki/PDF/X
gives a preview) and respect the requirements. No, PDFBox doesn't have
a validator for that.
To clarify this -
PDFBox is rather low level, i.e. you have to know a bit about PDF
itself. There isn't switch in PDFBox that sets PDF/A-1a compatibility.
To see what I mean, have a look at the CreatePDFA.java example. This
isn't what you need, but it shows what extra work is to be done for that
standard, e.g. output intents and XMP.

More on PDF/A here
https://www.pdfa.org/pdfa-faq/

Tilman

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