[NTG-context] Re: upload

14 Feb 2025

      On 2/14/2025 11:36 AM, Steffen Wolfrum wrote:
...
...
Am 13.02.2025 um 17:37 schrieb Hans Hagen :
On 2/13/2025 3:28 PM, Steffen Wolfrum wrote:
...
...
Am 12.02.2025 um 16:13 schrieb Hans Hagen via ntg-context :
On 2/12/2025 3:48 PM, Steffen Wolfrum wrote:
...
«Tagged PDF» still is broken:
\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]
\starttext
TEST
\stoptext
define broken ... you're not enabling tagging and enabling export will disable some other features so you get a different pdf anyway
When I run this test files with e.g. ConTeXt  ver: 2022.07.06 21:42 LMTX
then opening the PDF in Acrobat Reader it says: Document Properties > Tagged PDF : »Yes«.
When I use the current ConText its says »No«.
And the publishing houses demand Tagged PDF (because of accessibility).
whatever that means ... for printing it doesn't matter ... for viewinfb they have to provide the tools and i bet they don't give you a full acrobat prescription
(of course not)
...
anyway, you don't read what we answer ... you need to enable tagging and not confuse it with exporting .. think something
\setuptagging
[state=start]
\setupbackend
[format=ua2]
\starttext
   TEST
\stoptext
instead.
Hans
Does that mean that this example should provide the urgently desired alt-text:
\setuptagging
[state=start]
\setupbackend
[format=ua2]
\setupexternalfigures[location=default]
\starttext
   \startPDFalternativetext{this is a cow}
       \externalfigure[cow]
   \stopPDFalternativetext
\stoptext
Really?! If so, I will send it to the publishers so they can check if it fulfills their needs.
I assume you can try and did so because you indicated that your viewer 
gave some report. Of course you need to make sure not to introduce 
unwanted spaces (as in your example).

We can actually put an Alt on a specific image element (by setting 
label={...}) but for now it's disabled for now. Last time we checked 
some validators didn't like it and viewerd didn't do anything useful 
with it so ity made no sense to waste more time on it.

Just putting stuff in a pdf for the sake of having something is is 
tricky because who knows what future validation makes of it. It's a mess 
(and always has been and likely will be).

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