Am Thu, 24 Apr 2025 17:38:26 +0200 schrieb Pablo Rodriguez via
ntg-context:

>> You should be aware that while alt is better than nothing, it has
>> lots of problems. E.g. for braille displays it is typically much too
>> verbose.
> 
> Many thanks for your comment, Ulrike.
> 
> I thought that PDF/UA-1 didn’t allow (or at least, require) mathml.

Yes, PDF/UA-1 is basically unusable for sensible math tagging.

If you really want to produce accessible math (and not only fool
some validator) then you should use PDF 2.0 and UA-2 and MathML
(either as structure elements or as associated file on the Formula
tag).

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

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