[NTG-context] Re: images with alt text

[Florent Michel <florent.m42@gmail.com>]

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>
> No. I tested it (and added also the backend stuff) ...
> \setupbackend[
> format={pdf/a-1b:2005},
> profile={default_cmyk.icc,default_rgb.icc,default_gray.icc},
> intent=Coated FOGRA39 (ISO 12647-2:2004),
> level=0]
> \setupstructure[state=start,method=auto]
> \setupbackend[export=yes]

\setupexternalfigures[location=default]
> \starttext
> \pdfalternativetext{\externalfigure[cow]}
>     {alternate description}
> \stopPDFalternativetext
> \stoptext
> … but when opening the PDF with Acrobat Reader and checking the Document
> Properties “Tagged PDF?” it says “No”.
> (Even though it is recognised as PDF/A)


Thanks for having tried! I unfortunately know nothing about how
Acrobat Readers checks for a tagged PDF, so I'll refrain from trying to
propose solutions - which would likely not work.

Cheers,
Florent

Le jeu. 6 févr. 2025 à 11:23, Steffen Wolfrum <context@st.estfiles.de> a
écrit :

> No. I tested it (and added also the backend stuff) ...
>
> \setupbackend[
> format={pdf/a-1b:2005},
> profile={default_cmyk.icc,default_rgb.icc,default_gray.icc},
> intent=Coated FOGRA39 (ISO 12647-2:2004),
> level=0]
> \setupstructure[state=start,method=auto]
> \setupbackend[export=yes]
>
> \setupexternalfigures[location=default]
> \starttext
> \pdfalternativetext{\externalfigure[cow]}
>     {alternate description}
> \stopPDFalternativetext
> \stoptext
>
> … but when opening the PDF with Acrobat Reader and checking the Document
> Properties “Tagged PDF?” it says “No”.
> (Even though it is recognised as PDF/A)
>
> Steffen
>
>
> Am 04.02.2025 um 16:40 schrieb Florent Michel <florent.m42@gmail.com>:
>
> Hi,
>
> It seems that the accessibility page has moved here:
> https://wiki.contextgarden.net/Input_and_compilation/Accessibility .
> Maybe the last example is suitable?
>
> (It seems to correctly embed the alt text in the pdf; this can be checked
> by using the `--nocompression` flag and opening the resulting pdf with a
> text editor. Not sure how to have the alt text in the exported html,
> though; I'm sure others will be able to advise on that better than I could.)
>
> Best,
> Florent
>
>
> Le mar. 4 févr. 2025 à 14:29, Steffen Wolfrum <context@st.estfiles.de> a
> écrit :
>
>> Hi,
>>
>> today my publishers ask for an example of how ConTeXt deals with
>> accessibility.
>>
>> I send them a PDF with
>>
>> \setupbackend[export=yes]
>> \setupstructure[state=start,method=auto]
>>
>> What they needed was like
>> <img src="example.jpg" alt="Example text">
>>
>> What is the equivalent for this with ConTeXt?
>> Contextgarden ( https://contextgarden.net/Accessibility) is empty...
>>
>> Yours, Steffen
>>
>>
>>
>> > Am 23.09.2024 um 17:09 schrieb Hans Hagen via ntg-context <
>> ntg-context@ntg.nl>:
>> >
>> > On 9/23/2024 8:02 AM, Pablo Rodriguez via ntg-context wrote:
>> >> On 9/22/24 21:58, Hans Hagen via ntg-context wrote:
>> >>> On 9/22/2024 2:43 PM, Pablo Rodriguez via ntg-context wrote:
>> >>>
>> >>>> It would be great to have synonyms added the /E information by
>> default.
>> >>>> I think this may be a requirement for text-to-speech conversions.
>> >>>
>> >>> even more crap .. let's wait till abbreviations are completely
>> forbiddeb
>> >>> (and also units and such )
>> >> From what I see, /E may be helpful (similar to /ActualText).
>> >
>> > Imo it's useless:
>> >
>> > (1) normally when a new abbreviation is intriduced one has the expanded
>> meaning after it
>> > (2) after that it is suposed to be known
>> > (3) if one jumps into a document in the middle one cannot expect it to
>> be repeated every time
>> > (4) if that *is* expoected there is no need to use abbreviations at all
>> > (5) so, why should a 'read out' document have all abbreviations with an
>> expanded meaning and a typeset text not
>> >
>> >> For me, the real problem with accessibility (and penalties for
>> >> non-accessible documents) is that it will force all documents to be
>> >> machine-readable (so we have to feed AI with all our public documents,
>> >> whether we like it or not).
>> >
>> > i assume that such a machine learning or pattern recognotion app can
>> quite well figure out that it's an abbreviation
>> >
>> >> I mean, no such as "\enabledirectives[backend.pdf.nounicode=❌]"
>> allowed.
>> >
>> > well, everything is allowed ... after all why do we typeset and
>> visualize otherwise ... it depends on the audience
>> >
>> > one can always generate multiple versions, one with two times the
>> number of pages and all expanded
>> >
>> > Hans
>> >
>> >
>> >
>> > -----------------------------------------------------------------
>> >                                         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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>> >
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>> > wiki     : https://wiki.contextgarden.net
>> >
>> ___________________________________________________________________________________
>>
>>
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>>
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>> ___________________________________________________________________________________
>>
>
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to
> the Wiki!
>
> maillist : ntg-context@ntg.nl /
> https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
> webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
> archive  : https://github.com/contextgarden/context
> wiki     : https://wiki.contextgarden.net
>
> ___________________________________________________________________________________
>
>
>
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to
> the Wiki!
>
> maillist : ntg-context@ntg.nl /
> https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
> webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
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>
> ___________________________________________________________________________________
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___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive  : https://github.com/contextgarden/context
wiki     : https://wiki.contextgarden.net
___________________________________________________________________________________