images with alt text

Steffen Wolfrum

21 Sep 2024 21 Sep '24

7:16 p.m.

Hi, as publishing houses (at least in Germany) are forced to provide «alt text» with their PDF-publications (from June 2025 on), I need to know how «images with alternate text» (https://en.wikipedia.org/wiki/Alt_attribute) are typeset with ConTeXt LMTX. In HTML it looks like this: <img src="example.jpg" alt="Example text"> What is the equivalent in ConTeXt LMTX? Yours, Steffen

Show replies by date

Hans Hagen

22 Sep 22 Sep

1:15 p.m.

On 9/21/2024 7:16 PM, Steffen Wolfrum wrote:

...

Hi,

as publishing houses (at least in Germany) are forced to provide «alt text» with their PDF-publications (from June 2025 on), I need to know how «images with alternate text» (https://en.wikipedia.org/wiki/Alt_attribute) are typeset with ConTeXt LMTX.

In HTML it looks like this:

<img src="example.jpg" alt="Example text">

What is the equivalent in ConTeXt LMTX?

afaik there no such tag on an image in pdf so one has to wrap, i'll add \startPDFalternativetext{when will the german government provide full acrobat for free (livelong) to developers} \scale[s=3]{\rotate[rotation=30]{DE}} \stopPDFalternativetext to play with but integrating something more nice also will b emore confusing ... the problem is that anything can be an image (liek a mp picture) 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 -----------------------------------------------------------------

Pablo Rodriguez

2:43 p.m.

On 9/22/24 13:15, Hans Hagen via ntg-context wrote:

...

On 9/21/2024 7:16 PM, Steffen Wolfrum wrote:

...
Hi,

...
...
as publishing houses (at least in Germany) are forced to provide «alt text» with their PDF-publications (from June 2025 on),

Hi Steffen and Hans, this will be a requirement for the whole European Economic Area. This is where the Accessibility Directive should be applied. Since this may not be the single requirement, I started a new wiki page for that: https://contextgarden.net/Accessibility. Please, feel free to contribute (as ever).

...

...
What is the equivalent in ConTeXt LMTX?

afaik there no such tag on an image in pdf so one has to wrap, i'll add

Alternate descriptions are covered in https://opensource.adobe.com/dc-acrobat-sdk-docs/pdfstandards/PDF32000_2008..... From what I see in the sample, they are very similar to /ActualText, but with /Alt instead (related to a marked section). They are applied to all items that have no direct text translation, such as images or formulas (to alternatively describe them in text).

...

\startPDFalternativetext{when will the german government provide full acrobat for free (livelong) to developers} \scale[s=3]{\rotate[rotation=30]{DE}} \stopPDFalternativetext

to play with but integrating something more nice also will b emore confusing ... the problem is that anything can be an image (liek a mp picture)

I think this is great, since this allows it to be applied as allowed by the PDF spec. Also for the expansion of abbreviations, /E is provided for marked sections (https://opensource.adobe.com/dc-acrobat-sdk-docs/pdfstandards/PDF32000_2008....), the same way as /ActualText (but it expects whole words). 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. Many thanks for your help, Pablo

Hans Hagen

9:58 p.m.

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 ) anyway, i might wait till we have some project for some government 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 -----------------------------------------------------------------

Pablo Rodriguez

23 Sep 23 Sep

8:02 a.m.

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). 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 mean, no such as "\enabledirectives[backend.pdf.nounicode=❌]" allowed. Pablo

Hans Hagen

5:09 p.m.

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 -----------------------------------------------------------------

Steffen Wolfrum

4 Feb 4 Feb

3:03 p.m.

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 :

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 ----------------------------------------------------------------- ___________________________________________________________________________________ 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 ___________________________________________________________________________________

Florent Michel

4:40 p.m.

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 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 -----------------------------------------------------------------

___________________________________________________________________________________

...
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) archive : https://github.com/contextgarden/context wiki : https://wiki.contextgarden.net

___________________________________________________________________________________

luigi scarso

5 Feb 5 Feb

12:27 p.m.

On Tue, 4 Feb 2025 at 16:44, Florent Michel wrote:

...

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.)

This is an example https://assets.publishing.service.gov.uk/media/679a0c48a77d250007d313ee/Inte... and this a checker https://pac.pdf-accessibility.org/en (the pdf doesn't seem good for accessibility) -- luigi

...

Best, Florent

Le mar. 4 févr. 2025 à 14:29, Steffen Wolfrum 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 -----------------------------------------------------------------

___________________________________________________________________________________

...
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) 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) archive : https://github.com/contextgarden/context wiki : https://wiki.contextgarden.net

___________________________________________________________________________________

Hans Hagen

1:11 p.m.

On 2/5/2025 12:27 PM, luigi scarso wrote:

...

On Tue, 4 Feb 2025 at 16:44, Florent Michel mailto:florent.m42@gmail.com> wrote:

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.)

This is an example https://assets.publishing.service.gov.uk/media/679a0c48a77d250007d313ee/ International_AI_Safety_Report_2025_accessible_f.pdf

and this a checker https://pac.pdf-accessibility.org/en https://pac.pdf-accessibility.org/en

(the pdf doesn't seem good for accessibility)

well, with over a decade of accesibility not resulting in free viewers that do something useful with it one can always adapt the definition (and implmentation) of accessibility to whatever tool or checker one has a while ago Mikael and I tested Chat on a simple integral with limits ... it started to be clever and didn't need tagging at all because it looked at hwo characters got positioned, but, when challenged, at some point it swapped positive and negative values (top / bottom bounds); when pressed a bit it admitted to be wrong, and in the end we got confirnmed that its interpretation of the pdf page stream for relative positioning (which in itself impressive) was wrong but then it started to hallucinate so we quit 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 -----------------------------------------------------------------

Steffen Wolfrum

3:44 p.m.

I wanted to test the example that Florent mentioned, and I realized I have to update first. But the usual steps ... cd ~/context-osx-arm64/ sh install.sh … didn't work. The following report was created, see below. What went wrong? Steffen ******* Last login: Wed Feb 5 15:33:30 on ttys000 wolfrum@MacBookPro ~ % cd ~/context-osx-arm64/ wolfrum@MacBookPro context-osx-arm64 % sh install.sh xattr: bin/mtxrun: No such xattr: com.apple.quarantine mtxrun | forcing cache reload resolvers | resolving | looking for regular 'texmfcnf.lua' on given path '/Users/wolfrum/texmf/web2c' from specification 'home:texmf/web2c' resolvers | resolving | looking for regular 'texmfcnf.lua' on given path '/Users/wolfrum/texmf-local/web2c' from specification 'selfautoparent:/texmf-local/web2c' resolvers | resolving | looking for regular 'texmfcnf.lua' on given path '/Users/wolfrum/texmf-context/web2c' from specification 'selfautoparent:/texmf-context/web2c' resolvers | resolving | looking for regular 'texmfcnf.lua' on given path '/Users/wolfrum/texmf-dist/web2c' from specification 'selfautoparent:/texmf-dist/web2c' resolvers | resolving | looking for regular 'texmfcnf.lua' on given path '/Users/wolfrum/texmf/web2c' from specification 'selfautoparent:/texmf/web2c' resolvers | resolving | looking for fallback 'contextcnf.lua' on given path '/Users/wolfrum/texmf/web2c' from specification 'home:texmf/web2c' resolvers | resolving | looking for fallback 'contextcnf.lua' on given path '/Users/wolfrum/texmf-local/web2c' from specification 'selfautoparent:/texmf-local/web2c' resolvers | resolving | looking for fallback 'contextcnf.lua' on given path '/Users/wolfrum/texmf-context/web2c' from specification 'selfautoparent:/texmf-context/web2c' resolvers | resolving | looking for fallback 'contextcnf.lua' on given path '/Users/wolfrum/texmf-dist/web2c' from specification 'selfautoparent:/texmf-dist/web2c' resolvers | resolving | looking for fallback 'contextcnf.lua' on given path '/Users/wolfrum/texmf/web2c' from specification 'selfautoparent:/texmf/web2c' resolvers | resolving | resolvers | resolving | warning: no lua configuration files found resolvers | resolving | no texmf paths are defined (using TEXMF) resolvers | resolving | mtxrun | the resolver databases are not present or outdated mtx-install | provide valid server and instance If you want to run ConTeXt everywhere, you need to adapt the path, like: export PATH=/Users/wolfrum/context-osx-arm64/tex/texmf-osx-arm64/bin:$PATH If you run from an editor you can specify the full path to mtxrun: /Users/wolfrum/context-osx-arm64/tex/texmf-osx-arm64/bin/mtxrun --autogenerate --script context --autopdf ... The following settings were used: server : lmtx.contextgarden.net,lmtx.pragma-ade.com,lmtx.pragma-ade.nl instance : install-lmtx extras : ownpath : /Users/wolfrum/context-osx-arm64 platform : osx-arm64 wolfrum@MacBookPro context-osx-arm64 % wolfrum@MacBookPro context-osx-arm64 % wolfrum@MacBookPro context-osx-arm64 %

Hans Hagen

5:35 p.m.

On 2/5/2025 3:44 PM, Steffen Wolfrum wrote:

...

I wanted to test the example that Florent mentioned, and I realized I have to update first.

But the usual steps ...

cd ~/context-osx-arm64/ sh install.sh

… didn't work. The following report was created, see below.

What went wrong? Steffen *******

Last login: Wed Feb 5 15:33:30 on ttys000 wolfrum@MacBookPro ~ % cd ~/context-osx-arm64/

wolfrum@MacBookPro context-osx-arm64 % sh install.sh

xattr: bin/mtxrun: No such xattr: com.apple.quarantine

you probably havbe to set some permissions 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 -----------------------------------------------------------------

Steffen Wolfrum

6:49 p.m.

Hmm… macOS users out there, can you help me? Updating ConTeXt LMTX in the described way never was a problem. Does updating today lead to the error below, because meanwhile my macOS is 15.3? Working with ConTeXt LMTX on my Mac (via TeXShop) still works without any problems. Why is the update process not working anymore? Does anybody know which files might need a changed permission, as Hans suggested? Yours, Steffen

...

Am 05.02.2025 um 17:35 schrieb Hans Hagen :

On 2/5/2025 3:44 PM, Steffen Wolfrum wrote:

...
I wanted to test the example that Florent mentioned, and I realized I have to update first. But the usual steps ... cd ~/context-osx-arm64/ sh install.sh … didn't work. The following report was created, see below. What went wrong? Steffen ******* Last login: Wed Feb 5 15:33:30 on ttys000 wolfrum@MacBookPro ~ % cd ~/context-osx-arm64/ wolfrum@MacBookPro context-osx-arm64 % sh install.sh xattr: bin/mtxrun: No such xattr: com.apple.quarantine

you probably havbe to set some permissions

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 ----------------------------------------------------------------- ___________________________________________________________________________________ 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 ___________________________________________________________________________________

Keith McKay

7:13 p.m.

Hi Steffen I use context on my mac mini M1 but I haven't updated to the most recent version yet. However I see on your output xattr: bin/mtxrun: No such xattr: com.apple.quarantine Does it have anything to do with the mac security when it wont let you open an app which has not come from the App store or a signed developer? If so you can go into the settings, and under security allow it to run. Although if it worked before I can't see why it shouldn't now. Best Wishes Keith McKay On 05/02/2025 17:49, Steffen Wolfrum wrote:

...

Hmm… macOS users out there, can you help me?

Updating ConTeXt LMTX in the described way never was a problem. Does updating today lead to the error below, because meanwhile my macOS is 15.3?

Working with ConTeXt LMTX on my Mac (via TeXShop) still works without any problems. Why is the update process not working anymore?

Does anybody know which files might need a changed permission, as Hans suggested?

Yours, Steffen

...
Am 05.02.2025 um 17:35 schrieb Hans Hagen :

On 2/5/2025 3:44 PM, Steffen Wolfrum wrote:

...
I wanted to test the example that Florent mentioned, and I realized I have to update first. But the usual steps ... cd ~/context-osx-arm64/ sh install.sh … didn't work. The following report was created, see below. What went wrong? Steffen ******* Last login: Wed Feb 5 15:33:30 on ttys000 wolfrum@MacBookPro ~ % cd ~/context-osx-arm64/ wolfrum@MacBookPro context-osx-arm64 % sh install.sh

you probably havbe to set some permissions

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 ----------------------------------------------------------------- ___________________________________________________________________________________ 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) archive : https://github.com/contextgarden/context wiki : https://wiki.contextgarden.net ___________________________________________________________________________________

Henning Hraban Ramm

9:51 p.m.

Am 05.02.25 um 19:13 schrieb Keith McKay:

...

Hi Steffen I use context on my mac mini M1 but I haven't updated to the most recent version yet. However I see on your output

xattr: bin/mtxrun: No such xattr: com.apple.quarantine

Does it have anything to do with the mac security when it wont let you open an app which has not come from the App store or a signed developer? If so you can go into the settings, and under security allow it to run. Although if it worked before I can't see why it shouldn't now.

I think I suggested to add this command. It makes sense if your MacOS quarantines the mtxrun binary, and it doesn’t hurt if not. The error message just says that there’s nothing to do. Hraban

Keith McKay

10:53 p.m.

Thanks Hraban, good to know. Keith On Wed, 5 Feb 2025, 20:51 Henning Hraban Ramm, wrote:

...

Am 05.02.25 um 19:13 schrieb Keith McKay:

...
Hi Steffen I use context on my mac mini M1 but I haven't updated to the most recent version yet. However I see on your output

xattr: bin/mtxrun: No such xattr: com.apple.quarantine

Does it have anything to do with the mac security when it wont let you open an app which has not come from the App store or a signed developer? If so you can go into the settings, and under security allow it to run. Although if it worked before I can't see why it shouldn't now.

I think I suggested to add this command. It makes sense if your MacOS quarantines the mtxrun binary, and it doesn’t hurt if not. The error message just says that there’s nothing to do.

Hraban

___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki!

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___________________________________________________________________________________

Thomas A. Schmitz

7:18 p.m.

...

On 5. Feb 2025, at 17:35, Hans Hagen wrote:

you probably havbe to set some permissions

I had the same error this morning; when I tried again in the afternoon, everything was smooth; I have version 2025.02.04 17:52 now. To me, this looks like the server had a brief problem or something with DNS lookup? All best Thomas

Steffen Wolfrum

8:44 p.m.

You are right. Same command, some hours later: the update works again like a charm. Thank you for your contribution Steffen

...

Am 05.02.2025 um 19:18 schrieb Thomas A. Schmitz :

...
On 5. Feb 2025, at 17:35, Hans Hagen wrote:

you probably havbe to set some permissions

I had the same error this morning; when I tried again in the afternoon, everything was smooth; I have version 2025.02.04 17:52 now. To me, this looks like the server had a brief problem or something with DNS lookup?

All best

Thomas ___________________________________________________________________________________ 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 ___________________________________________________________________________________

Steffen Wolfrum

6 Feb 6 Feb

12:22 p.m.

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 mailto:florent.m42@gmail.com>:

Hi,

It seems that the accessibility page has moved here: https://wiki.contextgarden.net/Input_and_compilation/Accessibility 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 mailto: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 https://contextgarden.net/Accessibility) is empty...

Yours, Steffen

...
Am 23.09.2024 um 17:09 schrieb Hans Hagen via ntg-context mailto: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 http://www.pragma-ade.nl/ | www.pragma-pod.nl http://www.pragma-pod.nl/ ----------------------------------------------------------------- ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki!

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

Florent Michel

12:56 p.m.

...

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 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 :

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 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 -----------------------------------------------------------------

___________________________________________________________________________________

...
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) 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) 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) archive : https://github.com/contextgarden/context wiki : https://wiki.contextgarden.net

___________________________________________________________________________________

Steffen Wolfrum

1:06 p.m.

When running the test with an older (2022.07.06 21:42) LMTX and opening the PDF with Acrobat Reader, checking the Document Properties “Tagged PDF?” it says “Yes”! Steffen

...

Am 06.02.2025 um 12:56 schrieb Florent Michel :

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 mailto: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 mailto:florent.m42@gmail.com>:

Hi,

It seems that the accessibility page has moved here: https://wiki.contextgarden.net/Input_and_compilation/Accessibility 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 mailto: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 https://contextgarden.net/Accessibility) is empty...

Yours, Steffen

...
Am 23.09.2024 um 17:09 schrieb Hans Hagen via ntg-context mailto: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 http://www.pragma-ade.nl/ | www.pragma-pod.nl http://www.pragma-pod.nl/ ----------------------------------------------------------------- ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki!

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

Steffen Wolfrum

2:17 p.m.

I saw that there is a typo in the example from contextgarden. This one is correct: \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 \startPDFalternativetext{this is a cow} \externalfigure[cow] \stopPDFalternativetext \stoptext But again, Acrobat Reader > Document Properties > Tagged PDF > No Steffen

...

Am 06.02.2025 um 13:06 schrieb Steffen Wolfrum :

When running the test with an older (2022.07.06 21:42) LMTX and opening the PDF with Acrobat Reader, checking the Document Properties “Tagged PDF?” it says “Yes”!

Steffen

...
Am 06.02.2025 um 12:56 schrieb Florent Michel mailto:florent.m42@gmail.com>:

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 mailto: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 mailto:florent.m42@gmail.com>:

Hi,

It seems that the accessibility page has moved here: https://wiki.contextgarden.net/Input_and_compilation/Accessibility 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 mailto: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 https://contextgarden.net/Accessibility) is empty...

Yours, Steffen

...
Am 23.09.2024 um 17:09 schrieb Hans Hagen via ntg-context mailto: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 http://www.pragma-ade.nl/ | www.pragma-pod.nl http://www.pragma-pod.nl/ ----------------------------------------------------------------- ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki!

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Florent Michel

2:30 p.m.

Thanks for the information! A wild guess (apologies for the noise if if there is an obvious reason why it can't work!): maybe it's worth trying replacing format={pdf/a-1b:2005}, with format={pdf/a-1a:2005}, or another supported format? (If I read the logs correctly, the supported formats are 2 | 2.0 | a1a2005 | a1b2005 | a2a | a2b | a2u | a3a | a3b | a3u | ua1 | ua2 | x1a2001 | x1a2003 | x32002 | x32003 | x4 | x4p | x5g | x5n | x5pg .) Cheers, Florent Le jeu. 6 févr. 2025 à 13:19, Steffen Wolfrum a écrit :

...

I saw that there is a typo in the example from contextgarden. This one is correct:

\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 \startPDFalternativetext{this is a cow} \externalfigure[cow] \stopPDFalternativetext \stoptext

But again, Acrobat Reader > Document Properties > Tagged PDF > No

Steffen

Am 06.02.2025 um 13:06 schrieb Steffen Wolfrum :

When running the test with an older (2022.07.06 21:42) LMTX and opening the PDF with Acrobat Reader, checking the Document Properties “Tagged PDF?” it says “Yes”!

Steffen

Am 06.02.2025 um 12:56 schrieb Florent Michel :

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 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 :

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 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

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Florent Michel
Hans Hagen
Hans Hagen
Henning Hraban Ramm
Keith McKay
luigi scarso
Pablo Rodriguez
Steffen Wolfrum
Thomas A. Schmitz

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