Considering the following LaTeX code:




The file ch01.pdf is actually PDF1.5 and pdftex expects PDF1.4. What modifications do I need to do so that PDF1.5 is accepted.

  • I hope it is not a misconception of mine, but \pdfminorversion declares a lower bound for the PDF version. So if pdfTeX expects 1.4 and you provide 1.5 it should be okay. Could it be that you confused something? – Henri Menke May 27 '16 at 18:08
  • @HenriMenke Its actually upper bound. – Shahzad May 27 '16 at 18:35
  • A quick look to pdfx.sty suggests that the a-1b option causes \pdfminorversion to be lowered to 3; but even without this option, the package would set it to 4. Anyway, this happens with the version of pdfx distributed with TeX Live 2013: give me twenty minutes and I’ll get where I can check a TeX Live 2015. – GuM May 27 '16 at 18:59
  • I confirm that even with version 1.5.6 (2016/02/04) of the pdfx package, the value of \pdfminorversion is lowered to 4 when producing PDF/A. On the other hand, quoting from Wikipedia: “PDF/A-1 is based on the PDF Reference Version 1.4 from Adobe Systems Inc.”, so this behavior seems unavoidable. :-( – GuM May 27 '16 at 19:17

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