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

If you use a word processor creating Tagged PDF is your default. | FOGRA’s summary of developments in print | … Read more

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