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#706 Invalid PDF-A

closed
nobody
None
5
2012-10-09
2012-05-02
supportxc
No

Hi,

We have been testing some functionalities of your great library and detected the following issue.

When creating a PDF/A from an HTML (all files are included in the attachment) when verifying the standard conformance with Adobe Acrobat Pro, it is shown as an invalid PDF/A.

Conformance
Standard: PDF/A-1B
ISO Name: ISO 19005-1
Status: verification failed

We think that it could be a problem when calculating the geometries, because if the texts of the document vary (adding or substracting some lines) the verification failure only happens occasionally.

Attachment with:

  • html file.
  • php files that call the tcpdf core lib.
  • jpg file for the header.
  • ttf file (OFL license) for the font.
  • created pdf file for the example with the verification failure in Adobe Acrobat.

Thanks a lot,
best regards

Discussion

  • Nicola Asuni

    Nicola Asuni - 2012-05-02

    I am unable to open the attachment.
    Please provide a very simple test case, otherwise this bug will be closed.

     

  • supportxc

    supportxc - 2012-05-03

    I'd like to know your problem with the attachment in order to solve it, I have zip it with zip linux command and I am able to unzip it and to open it with WinRar app on Windows.
    Maybe the problem is due to different behaviours of the mailing lists and web form for bugs tracks.

    So, I send you the direct link to the download of the attachment:
    https://sourceforge.net/tracker/download.php?group_id=128076&atid=710532&file_id=442598&aid=3523053

    Some other clarifications to the issue,

    When opening the document in Adobe Acrobat, you could click after verifying conformance on the link "Open Preflight" where it appears a list with a node called "PDF/A Compliance". Selecting it and after -> Verify compliance with PDF/A-1b->Analyze, the result ir a bit more detailed, saying:
    "Errors in PDF syntax".

    Also, in case you were not using Adobe Acrobat Pro, a free online test can be done on this web:
    http://www.datalogics.com/products/callas/callaspdfA-onlinedemo.asp
    And the results show the same info.

    For testing the attachment you only have to put included files on a folder and execute createpdf.php,
    (it requires to have included the "belleza font", for it we have let commented the line 185 on the script).

    Thanks a lot, if you need some other explain, we are at your service.

     

  • Nicola Asuni

    Nicola Asuni - 2012-05-03

    I removed the attachment because was corrupted. Please compress it using tar.gz and attach it here.

     

  • supportxc

    supportxc - 2012-05-03

    Test PDFA targz

     
    test_pdfa.tgz

  • Nicola Asuni

    Nicola Asuni - 2012-05-03

    The Acrobat Preflight report an "unknow" syntax error when performing the PDF/A-1b test but do not report any error when performing a syntax analysis. I suspect that the problem relies on the used font or an external image.
    Try to rebuild the document as simple as possible (i.e. using standard fonts and without images) and test for PDF/A-1b compliance. Then add one font/image at time and test again to find where the problem is.

     

  • supportxc

    supportxc - 2012-05-04

    Please, regarding to your succesfull example with the case I have attached (as you indicated in the other thread), could you send us the result PDF for the cases that previously failed the PDF/A check.
    This is because I have modified the code supressing all warnings and the results are the same, PDF/A compliance is not verified.

    Thank you very much Nicola,
    best regards

     

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