[NTG-context] PDF/UA-2, WTPDF

[NTG-context] PDF/UA-2, WTPDF

[Henning Hraban Ramm]

Quoting a post by Philipp Kiff, 
https://mastodon.social/@pkiff/112219488889350928:


In amongst the release of PDF/UA-2 (PDF for Universal Accessibility) and 
the new Well-Tagged PDF (WTPDF) standard last month, some PDF 
professionals may have missed two other new resources that may help 
explain and view them:

1. Questions and Answers about Tagged PDF from PDF association

2. Acrobat Custom File Info Panels by Peter Wyatt


Last month saw the release of PDF/UA-2 and the new Well-Tagged PDF 
(WTPDF) standard - neither of which revokes PDF/UA-1. And none of those 
are the same as PDF 1.7 vs 2.0. To many, the landscape of PDF specs may 
now seem littered with confusing acronyms and versions!

For some help disentangling it all, the PDF association has a Questions 
and Answers about Tagged PDF:

https://pdfa.org/resource/tagged-pdf-q-a/


In related news, Peter Wyatt released Acrobat Custom File Info Panels. 
This is a free extension for Acrobat that adds new panels to the XMP 
metadata shown when you view File > Properties in Acrobat Pro.

The new panels allow you to view the additional conformance claims and 
dated revisions of ISO standards that can now be included in PDFs, but 
that aren't currently visible in the standard Acrobat panels.

https://pdfa.org/discovering-pdf-metadata/


One thing I realized in reading through the new standards and looking at 
various sample files this week is that I should probably spend some time 
learning LaTeX! Both LaTeX and LibreOffice are already capable of 
producing PDF/UA-2 files, and with some tweaking, LaTeX can produce what 
appear to be really good WTPDF files. Kudos to both those development teams!

https://github.com/latex3/tagging-project/discussions/72


Finally, in case you missed earlier posts from last month, here are 
links to the official sources for the two new PDF standards that these 
other resources relate to:

1. PDF/UA-2
https://pdfa.org/iso-14289-2-pdfua-2/

2. Well-Tagged PDF (WTPDF)
https://pdfa.org/wtpdf/
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[NTG-context] Re: PDF/UA-2, WTPDF

[Hans Hagen]

On 4/6/2024 5:34 PM, Henning Hraban Ramm wrote:

> 1. PDF/UA-2
> https://pdfa.org/iso-14289-2-pdfua-2/

looks likes one has to pay for it

> 2. Well-Tagged PDF (WTPDF)
> https://pdfa.org/wtpdf/
well, tagging ...

Hans

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                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
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[NTG-context] Re: PDF/UA-2, WTPDF

[Henning Hraban Ramm]

Am 07.04.24 um 08:06 schrieb Hans Hagen:
> On 4/6/2024 5:34 PM, Henning Hraban Ramm wrote:
> 
>> 1. PDF/UA-2
>> https://pdfa.org/iso-14289-2-pdfua-2/
> 
> looks likes one has to pay for it

Oh, as usual with PDF association…

That’s not how you promote open standards.

(Didn’t check, jost forwarded the message.)

>> 2. Well-Tagged PDF (WTPDF)
>> https://pdfa.org/wtpdf/
> well, tagging ...

Of course.

But you asked for wanted accessibility features:

We have \pdfbackendactualtext{visible}{alternative}, can we get 
alternative text (ActualText) for images?
Not automatically, of course (if someone wants AI descriptions they can 
implement a module), just as a keyword in \externalfigure?

Hraban
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[NTG-context] Re: PDF/UA-2, WTPDF

[Ulrike Fischer]

Am Sun, 7 Apr 2024 09:31:30 +0200 schrieb Henning Hraban Ramm:

> Am 07.04.24 um 08:06 schrieb Hans Hagen:
>> On 4/6/2024 5:34 PM, Henning Hraban Ramm wrote:
>> 
>>> 1. PDF/UA-2
>>> https://pdfa.org/iso-14289-2-pdfua-2/
>> 
>> looks likes one has to pay for it
> 
> Oh, as usual with PDF association…

Sorry that pdf/UA-2 costs something is due to ISO not to the PDF
association. The PDF association made the WTPDF document which is
for free (and is very similar to pdf/UA-2). And imho they are also
trying to get sponsors for PDF/UA-2 (something they already did for
the PDF 2.0 spec which you now can buy for 0€).

-- 
Ulrike Fischer 
http://www.troubleshooting-tex.de/

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[NTG-context] Re: PDF/UA-2, WTPDF

[Henning Hraban Ramm]

Am 07.04.24 um 11:17 schrieb Ulrike Fischer:
> Am Sun, 7 Apr 2024 09:31:30 +0200 schrieb Henning Hraban Ramm:
> 
>> Am 07.04.24 um 08:06 schrieb Hans Hagen:
>>> On 4/6/2024 5:34 PM, Henning Hraban Ramm wrote:
>>>
>>>> 1. PDF/UA-2
>>>> https://pdfa.org/iso-14289-2-pdfua-2/
>>>
>>> looks likes one has to pay for it
>>
>> Oh, as usual with PDF association…
> 
> Sorry that pdf/UA-2 costs something is due to ISO not to the PDF
> association. The PDF association made the WTPDF document which is
> for free (and is very similar to pdf/UA-2). And imho they are also
> trying to get sponsors for PDF/UA-2 (something they already did for
> the PDF 2.0 spec which you now can buy for 0€).

Ok, sorry for barking at the wrong tree!

And I guess DANTE as a member of PDF association has access to the 
documents anyway?

Hraban

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[NTG-context] Re: PDF/UA-2, WTPDF

[Ulrike Fischer]

Am Sun, 7 Apr 2024 11:57:33 +0200 schrieb Henning Hraban Ramm:

>>> Oh, as usual with PDF association…
>> 
>> Sorry that pdf/UA-2 costs something is due to ISO not to the PDF
>> association. The PDF association made the WTPDF document which is
>> for free (and is very similar to pdf/UA-2). And imho they are also
>> trying to get sponsors for PDF/UA-2 (something they already did for
>> the PDF 2.0 spec which you now can buy for 0€).
> 
> Ok, sorry for barking at the wrong tree!
> 
> And I guess DANTE as a member of PDF association has access to the 
> documents anyway?

No, members have access to drafts during the time such a standard is
developed and discussed in the Working Groups but once it is
released there is no longer a free access.

BTW: The LaTeX Project is a member too https://pdfa.org/member/

 
-- 
Ulrike Fischer 
http://www.troubleshooting-tex.de/

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[NTG-context] Re: PDF/UA-2, WTPDF

[Hans Hagen]

On 4/7/2024 9:31 AM, Henning Hraban Ramm wrote:
> Am 07.04.24 um 08:06 schrieb Hans Hagen:
>> On 4/6/2024 5:34 PM, Henning Hraban Ramm wrote:
>>
>>> 1. PDF/UA-2
>>> https://pdfa.org/iso-14289-2-pdfua-2/
>>
>> looks likes one has to pay for it
> 
> Oh, as usual with PDF association…
> 
> That’s not how you promote open standards.
> 
> (Didn’t check, jost forwarded the message.)
> 
>>> 2. Well-Tagged PDF (WTPDF)
>>> https://pdfa.org/wtpdf/
>> well, tagging ...
> 
> Of course.
> 
> But you asked for wanted accessibility features:

sure.

> We have \pdfbackendactualtext{visible}{alternative}, can we get 
> alternative text (ActualText) for images?
> Not automatically, of course (if someone wants AI descriptions they can 
> implement a module), just as a keyword in \externalfigure?

we can add a description option that then can eb used in the wrapper 
(not that it helps much to make an image accessible)

btw, someone showed me what this acrobat liquid mode does to a document 
... the fact that one has to apply 'ai' to a document is a bad omen and 
makes one wonder ... but anyway, big tech, big money, etc so ... (after 
visiting a typesetting museum today one again realizes that a few 
decades from now one will look back in a certain way, not all is progress)

one thing we need to keep in mind is that as soon as 'obsolete' and 'not 
to be used' enters descriptions (which kind of contradicts the 
flexibility of sofware) one can also wonder how older documents can ever 
match a standard; i often get the impression that instead of some 
thinking ahead we end up adapting to what can't be done or what went 
wrong (and calling something a standard can then be a way to obscure)

anyway, one way or the other we will cope (and it depends on user demand 
which in turn depends on organizational demand)

Hans

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                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
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[NTG-context] Re: PDF/UA-2, WTPDF

[Hans Hagen]

Hi,


-- Support for MathML*

ha, mml and support for it (comes and goes in browsers) has been if flux 
for ages (features get added but also removed) so what are we talking 
about here, maybe in a few decades when people stopped messing with it 
(and somethign new showed up it might work out

-- Support for modern Unicode*

i must have missed something (probably ancient unicode)

Hans

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                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
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[NTG-context] Re: PDF/UA-2, WTPDF

[Hans Hagen via ntg-context]

On 4/7/2024 9:31 AM, Henning Hraban Ramm wrote:
> Am 07.04.24 um 08:06 schrieb Hans Hagen:
>> On 4/6/2024 5:34 PM, Henning Hraban Ramm wrote:
>>
>>> 1. PDF/UA-2
>>> https://pdfa.org/iso-14289-2-pdfua-2/
>>
>> looks likes one has to pay for it
> 
> That’s not how you promote open standards.
should have been an ecma standard instead

Hans

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                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
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