On 4/25/25 10:32, Ulrike Fischer wrote:
> Am Thu, 24 Apr 2025 17:38:26 +0200 schrieb Pablo Rodriguez via
> ntg-context:
>> [...]
>> 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).

Many thanks for your reply, Ulrike,

the issue I see is that we don’t have PDF/A-4f for PDF/UA-2, so there
would be no way to use images with math.

That being said, I have just discovered that there is an associated file
for all math content in both PDF/UA-1 and PDF/UA-2 (although it has
other problems in PDF/UA-2).

Many thanks for your help,

Pablo
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