Re: Adobe Acrobat accessibility criteria

[Hans Hagen via ntg-context <ntg-context@ntg.nl>]

On 7/27/2021 3:11 AM, Connor P. Jackson via ntg-context wrote:
> Hello ConTeXt friends,
> 
> I am newly exploring ConTeXt in search of a better way to produce 
> PDF/UA-1 accessible and PDF/A compliant documents programmatically. From 
> my early experiments, ConTeXt docs appear to fully satisfy the veraPDF 
> validator, but Adobe Acrobat’s Accessibility Checker has three qualms 
> with ConTeXt-produced documents:
> 
>  1. The document is configured to display the file name rather than the
>     title in the top of the window (DisplayDocTitle == True is what I
>     think is required). See here
>     <https://www.w3.org/TR/WCAG20-TECHS/PDF18.html>.

Does this work at your end?

\setupinteraction
   [title=MyTitle,state=start]

\setupinteractionscreen
   [option={title}]

\starttext
     test
\stoptext


>  2. "Tagged Annotations" fails, suggesting that the document’s links are
>     not properly tagged. I believe the issue is missing "Link - OBJR”
>     (object reference) tags. See here
>     <https://amp.levelaccess.net/public/standards/view_best_practice.php?violation_id=807>,
>     here <https://www.w3.org/TR/WCAG20-TECHS/PDF11.html>, and here
>     <http://verapdf.org>.
>  3. "Tab Order" fails, I believe because ConTeXt does not specify that
>     the tab order should follow the Document Structure, so Acrobat reads
>     it as unspecified. See here
>     <https://www.w3.org/TR/WCAG20-TECHS/PDF3.html>. 
> 
> 
> Is there something I could be doing to correct these issues in my 
> ConTeXt documents? Or is this a change that would have to be made within 
> ConTeXt itself? I know that Adobe is not the definitive arbiter of what 
> an “accessible” PDF looks like, but for many organizations, passing the 
> Acrobat accessibility checker is a prerequisite, so it seems worthwhile 
> to me to make ConTeXt capable of it.
Most fo this is rather trivial but we need examples (mwe) and expected 
result (in only have an old acrobat x pro and the latest reader, so 
maybe i can't check all the latest greatest fancy features).

Hans

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