Re: PDF/A generation

[luigi scarso <luigi.scarso@gmail.com>]

On Thu, Oct 13, 2016 at 3:03 PM, Henri Menke <henrimenke@gmail.com> wrote:
> Dear list, (especially Luigi)
>
> for online publication I need to create a PDF/A compliant output file.  Does anyone have any experience with it and can tell me whether my setup will work?  So far I'm using
>
> \setupbackend
>   [
>     format={pdf/a-2a},
>     profile={default_cmyk.icc,default_rgb.icc,default_gray.icc},
>   ]
> \setupstructure[state=start,method=auto]
>
> I chose PDF/A-2a because there I can have PDF 1.7 which keeps the file size down but I can also switch to PDF/A-1a.  I have *no* external pixel graphics, just included PDFs which are also produced by ConTeXt with the same setup.
>
> Online I found Luigi's paper on PDF/A-1a [1].  However, even after reading I'm unsure whether `intent` is optional or required.
>
> Since I don't own Adobe Acrobat (nor am I using Windows) I cannot verify the resulting output.  Does anyone know any working free or open-source tools for GNU/Linux to do this task?
Have a look at
http://verapdf.org/software/
and test the file below  with
$> verapdf -v -x   -f 1a test.pdf
It should be ok

The icc files default_cmyk.icc  default_gray.icc  default_rgb.icc are
from ghostscript, put them in the same directory of the test.


\nopdfcompression
\setupinteraction
  [title=TITLE,
   subtitle=SUBTITLE,
   author=AUTHOR,
   keyword={{KEYWORD1, KEYWORD2}, KEYWORD3}]

%% For PDF/A
\setupbackend[
format={pdf/a-1a:2005}, % or pdf/a-1a:2005
profile={default_cmyk.icc,default_rgb.icc,default_gray.icc},
intent=ISO coated v2 300\letterpercent\space (ECI)]

%% Tagged PDF
%% method=auto ==> default tags by Adobe
\setupbackend[export=yes]
\setupstructure[state=start,method=auto]


\startchapter[title=Testing]
\startcolor[red]
\input knuth
\stopcolor
\input tufte

\input knuth

\placefigure[middle][fig:foo]
  {This is an image}
  {\externalfigure[cow.jpg]}

\input tufte

\stopchapter

\stoptext

I'm in a middle of something else now, I will look into it next days,
but you can play a bit and report problems.
-- 
luigi
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