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Re: PDF Tagging - layout tables.

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From: Duff Johnson
Date: Jul 13, 2022 8:35AM

> But Duff, there is no PDF/UA-2. Yet.

That's right.

> So I'll correct my original statement to read:
> There is no Aria anything in the current PDF/UA-1 standard.

Yes, PDF/UA-1 is based on PDF 1.7, which does not include support for ARIA attributes.

PDF 2.0, however, published in 2017 and updated in 2020, does include support for ARIA attributes.

> Don't want people confused about the differences between the main PDF standard and the PDF/UA, PDF/A, PDF/X, etc. micro-standards (or subsets) that create targeted standards for different types of PDFs used for different purposes.

I agree; that's why I wanted to clarify that "the PDF standard” at this time DOES support ARIA… but to your point I neglected to also mention that PDF/UA (at this time) does not.

The fact that PDF/UA has not yet caught up to PDF 2.0 shouldn't stop anyone from supporting ARIA in a PDF 2.0 context.

Thanks, Bevi!

Duff.


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