Re: PDF/UA Support

[Hans Hagen <pragma@wxs.nl>]

On 10/19/2015 5:50 PM, Andrew Dunning wrote:
> Dear list,
>
> I am beginning to see increasing need for PDF/UA (ISO 14289) files. Earlier this year, the US Access Board announced an update to the rules for the accessibility of electronic documents produced by the government that embraces the standard, which I expect will make it much more prominent.
>
> XeTeX cannot produce PDF/UA, and it seems unlikely that it ever will, but unless I am misreading the documentation it appears that ConTeXt has already implemented the necessary functionality. If this is so, it would be helpful to have a page discussing its use in parallel to <http://wiki.contextgarden.net/PDF/A>, and I would even suggest making PDF/UA the default for documents that do not have conflicting commands. The PDF Association seems to be pushing this as the future of the format; if this is so, this is an opportunity to bring ConTeXt to much greater prominence.

Indeed context supports tagged pdf already for a while, although only 
acrobat can do something with it. Making it default is not really an 
option as there is overhead involved (a bit more runtime and much larger 
filesize) that makes no sense when proofing documents and in workflows 
for print, but enabling is easy with

\setuptagging[state=start]

Btw, this feature relates to export to XML. Personally I wonder why this 
UA is such a hype, probably because publishers are reluctant to embed 
the document source in the pdf, which make much more sense when 
alternative rendering is needed.

Feel free to add information to the wiki (I have no time for that myself 
now). Probably much that applies to the export also applies to tagging.

Hans

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