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Re: Reference/Note tags

for

From: Paul Rayius
Date: Apr 10, 2025 8:08AM

Hi Alan,
Regarding your documentation that you're using - and probably your validation tool:
ISO-TS-32005-2023, and ISO-14289-2-2024 are for PDFs in the PDF 2.0 context, using ISO 32000-2. Meanwhile, the current "Tagged PDF Best Practices Guide," from the PDF Association is based on PDF/UA-1 (and, therefore, ISO 32000-1). Also, "most" PDF validators out there now, currently in use, are validating against PDF/UA-1. So, while it might be allowed, and appropriate, in the PDF 2.0 / PDF/UA-2 context, to have a Lbl inside a Reference, that's not allowed in PDF/UA-1.

I hope that helps,
Paul

Paul Rayius, ADS
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