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Incremental updates and PDF 1.7
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mLipok View Drop Down
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Points: 453 		Post Options Post Options   Thanks (0) Thanks(0)   Quote mLipok Quote  Post ReplyReply Direct Link To This Post Topic: Incremental updates and PDF 1.7
    Posted: 16 Sep 24 at 10:47PM
I was in hope to use:

https://developers.foxit.com/developer-hub/document/incremental-updates/

My question is how to setup QPDF object to create PDF 1.7  and not PDF 1.4 ?

I see I can use:
SetPDFAMode

...a few minutes later...
found it ...
$DPL.SetInformation(0, '1.7')


Edited by mLipok - 16 Sep 24 at 11:01PM
Here you can find description how to test my examples:
http://www.quickpdf.org/forum/forum_posts.asp?TID=2932&PID=12600&title=drawcapturedpagematrix-matrix-howto#12600
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mLipok View Drop Down
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Points: 453 		Post Options Post Options   Thanks (0) Thanks(0)   Quote mLipok Quote  Post ReplyReply Direct Link To This Post Posted: 16 Sep 24 at 11:04PM
  • My primary needs is related to :

  • "Incremental updates are required when modifying a digitally signed PDF. Any changes to the existing bytes in the file will invalidate existing signatures, so re-writing the PDF is not an option."

But also I was exptecting that if I use incremental update it means for me "versioning".
So my further question is how I can use ACROBAT READER to switch to view each subsequent version ?
Here you can find description how to test my examples:
http://www.quickpdf.org/forum/forum_posts.asp?TID=2932&PID=12600&title=drawcapturedpagematrix-matrix-howto#12600
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mLipok View Drop Down
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Points: 453 		Post Options Post Options   Thanks (0) Thanks(0)   Quote mLipok Quote  Post ReplyReply Direct Link To This Post Posted: 16 Sep 24 at 11:07PM
On second thought, if I have a signed PDF file in version 1.4, I won't be able to do anything with it.
I think so because the signed PDF has to be saved as a PDF in version 1.7 before it's signed.

Please let me know if I'm right.
Here you can find description how to test my examples:
http://www.quickpdf.org/forum/forum_posts.asp?TID=2932&PID=12600&title=drawcapturedpagematrix-matrix-howto#12600
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Ingo View Drop Down
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Points: 3527 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Ingo Quote  Post ReplyReply Direct Link To This Post Posted: 06 Dec 24 at 10:41PM
Wo hast Du diese Information her (mit Version 1.7)?
Auch vor 1.7 sind doch PDFs schon rechtsgültig signiert worden?
Cheers,
Ingo
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