Encoding multilingual content | The US Library of Congress recognizes individual PDF/A-4 conformance levels | “There was no book” | … Read more

In the context of the European Accessibility Act (EAA), accessible PDFs are shifting from a “nice to have” to a … Read more

The PDF Research Portal supports and encourages research into the PDF format and its broader role in modern economies.

We were asked to investigate non-functional internal document (intra-document) hyperlinks in PDFs stored on Google Drive and viewed with Google’s … Read more

Browsers battle over PDF capabilities | ISO’s “Publicly Available Standards” page is gone | PDF to Brainrot | JHOVE update … Read more

This initial FAQ focuses on HDR in the PDF/A and PDF/X contexts, to help stakeholders understand how high dynamic range … Read more

The poster sessions are a great way to interact with each other at PDF Days Europe 2025!

Here’s what previous PDF Days attendees have told me about this event, and why attending is a good investment.

Experience since PDF/UA-1 was published has revealed that some rules were too prescriptive. In some situations the semantic significance of … Read more

PDF has long relied on Flate for general-purpose data compression. Today, Brotli has emerged as a promising new approach that … Read more