According to pages 28-29 of the documentation for the newtx package, version 1.704 (January 9, 2022), the following source includes the "elements [needed] to specify to generate a pdf satisfying the PDF/A-1b standards, as verified by Adobe Acrobat Pro."
With loading of the pdfx and hyperxmp packages along with the pdfa options in \hypersetup:
- Adobe Acrobat Pro's File > Properties > Custom shows PDF/A-1b; but
- Adobe Acrobat Pro's File > Properties > Description shows values only for the metadata items Title and Subject but not for Author or Keywords.
On the other hand, if I comment out loading pdfx, then:
- Acrobat Pro's File > Properties > Custom no longer shows PDF/A-1b; and now
- Acrobat Pro's File > Properties > Description also shows values for Author and Keywords metadata.
I'm using Adobe Acrobat Pro version 2021.011.20039, pdfTeX, Version 3.141592653-2.6-1.40.23 (TeX Live 2022/dev), LaTeX2e <2021-11-15> patch level 1 with L3 programming layer <2022-01-21>.
Question: How can I get all the indicated metadata properties included in the pdf and, at the same time, have it verified by Acrobat Pro as PDF/A-1b compliant?
% !TEX TS-program = pdflatex
\begin{filecontents*}{\jobname.xmpdata}
\Title{A Book}
\Author{A. Nonymous}
\Language{en}
\Subject{A General Introduction to Things}
\Keywords{things\sep stuff}
\Publisher{My Self, Inc.}
\Copyright{Creative Commons by-nc-nd}
\end{filecontents*}
\documentclass{article}
% To examine pdf as pure ASCII:
\pdfcompresslevel=0
\pdfobjcompresslevel=0
\input glyphtounicode
\usepackage{pdfx} % v 1.6.4 or higher
\InputIfFileExists{glyphtounicode-cmr.tex}{}{}
\InputIfFileExists{glyphtounicode-ntx.tex}{}{}
\usepackage[T2A,T1]{fontenc}
\usepackage{substitutefont} % to allow non-default Cyrillic
\usepackage[russian,ngerman,polish,english]{babel}
\babeltags{russian=russian,french=french,german=ngerman,polish=polish}%
\substitutefont{T2A}{\rmdefault}{Tempora-TLF} % for Cyrillic
\usepackage[type1,sfdefault,scale=1]{sourcesanspro}% used by \mathsf
\usepackage[nohelv,amsthm,largesc,trueslanted,vvarbb,smallerops]{newtx}
\usepackage[varqu,varl]{inconsolata} % typewriter
\usepackage{hyperxmp}
\RequirePackage[type={CC},modifier={by-nc-nd},version={4.0},lang={english}]{doclicense}
\usepackage{datetime2} % to satisfy the "\today" in \hypersetup
\DTMusemodule{english}{en-US}
\usepackage{hyperref}
\hypersetup{
pdfapart=2, pdfaconformance=u,
bookmarksnumbered,
pdftitle={A Book},
pdfauthor={A. Nonymous},
pdfcreator={somebody},
pdfpublisher={My Self, Inc.},
pdfsubject={A General Introduction to Things},
pdfkeywords={things, stuff},
pdfdate={\today},
pdflang={en},pdfmetalang={en},
pdflicenseurl={http://creativecommons.org/licenses/by-nc-nd/4.0/}
}
\pdfgentounicode=1
\pdfglyphtounicode{EM}{0058 0058 0058 0058 0058 0058 0058 0058}%
\pdfglyphtounicode{NUL}{0060 0060 0060 0060 0060 0060 0060 0060}%
\pdfglyphtounicode{uni222B.dsp}{222B}%
\pdfglyphtounicode{summationdisplay.1}{0060 0060 0060 0060 0060 0060 0060 0060}%
\pdfglyphtounicode{summationdisplay}{0060 0060 0060 0060 0060 0060 0060 0060}%
\pdfglyphtounicode{radicalBigg}{0060 0060 0060 0060 0060 0060 0060 0060}%
\pdfglyphtounicode{radicalbig}{0060 0060 0060 0060 0060 0060 0060 0060}%
\pdfglyphtounicode{radicalbigg}{0060 0060 0060 0060 0060 0060 0060 0060}%
\immediate\pdfobj stream attr{/N 3} file{sRGB.icc}
\pdfcatalog{%
/OutputIntents [
<<
/Type /OutputIntent
/S /GTS_PDFA1
/DestOutputProfile \the\pdflastobj\space 0 R
/OutputConditionIdentifier (sRGB)
/Info (sRGB)
>>
]
}
\usepackage{blindtext}
\begin{document}
To be finished!
\blindmathpaper
\end{document}
Best Answer
The following code (updated 2023-10) pass the preflight test for pdf/A-1b. It requires a current latex/tex system (so e.g an up-to-date texlive 2023)
I don't know why setting the pdfproducer is needed, but it is too late now to check.