Am Sun, 11 May 2025 13:49:49 +0200 schrieb juh+ntg-context--- via ntg-context:
Dear all,
this was a very interesting thread, thanks a lot.
After your recent discussion about accessibility I poke around a little and found that LibreOffice is doing a nice job. I was quite surprised as I rarely use it. I randomly created some documents, exported to pdf and tested against verapdf. They all validate. (I am tempted to use LibreOffice for some small pdf documents we publish on our website.)
Passing validation doesn't garanty accessibility. If a figure has no alternative text, validation for UA-1 will fail. But if all your figure have as alternative text "blablablub", it will pass.
Accessibility is a hard job and people like me are happy if some validators are showing green success lines. But you never know, if it really makes things better.
Well you can test that. Get nvda and then let the PDF read to you.
With this I only get one error:
Specification: ISO 19005-2:2011, Clause: 6.2.4.3, Test number: 3
ISO 19005 is about PDF/A, Archivability. That has nothing to do with accessibility. You must call verapdf with the -f switch and choose ua-1, ua-2, wt1r, or wt1a if you want to validate accessibility. (assuming that you have a current verapdf). -- Ulrike Fischer http://www.troubleshooting-tex.de/