Matthias Valvekens explains the difference and respective value of digital signatures vs. MAC-based technology for authenticating PDF files.

Matthias Valvekens, the ISO project leader who led development of ISO 32004, has written a pair of blog posts to explain what ISO 32004 does and does not achieve in leveraging MAC technology for securing encrypted PDF files against tampering.

Non-rectangular links are coming to PDF 2.0! This article offers some background to link technology in PDF and discusses the forthcoming Extension to PDF 2.0.

With the publication of ISO/TS 24064 PDF 2.0 now supports three 3D formats: U3D, PRC and STEP.

The PDF Association’s new PDF Forms Technical Working Group (TWG) is advancing PDF Forms technologies through the introduction of new declarative models with integrated semantics.

This article provides information about virtual ISO meetings during which PDF proper, PDF/A, PDF/X and PDF/VT were discussed. ISO committees are TC 171 and TC 130, the meetings took place between June 15 and 18, 2020. A public status page …