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Best Practice in Creating Print Files for Variable Data Printing (VDP) now published

The PDF Association publishes new guidance to aide in optimizing PDF files for maximally-efficient rendering and print.

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MACs vs. signatures in PDF

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

A signed document delivered via computer.


ISO 32004: an overview

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.

Schematic of an ISO/DTS 32004 MAC in context.


Artifex Software is pleased to announce the release of MuPDF 1.20.0

The MuPDF 1.20.0 release focuses on improving annotations, enhanced form handling, and ease of integration.

Person working at a desk two people standing discussing information on a white board MuPDF1.20.0 release


Updating PDF-related MIME types

The PDF Association has updated IANA’s MIME media types registry for FDF, XFDF, PRC and U3D.

application/fdf, application/xfdf, application/pdf, model/prc, model/u3d, model/step


Introducing non-rectangular links to PDF

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.

Screen-shot of long Table of Contents entries line wrapping with Link annotation QuadPoints boundaries highlighted.


PDF 2.0 adds STEP 3D model support

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

Engineering drawing and finished piece.


Understanding UTF-8 in PDF 2.0

PDF Association’s CTO, Peter Wyatt discusses text strings in PDF.



Announcing the Email Archiving with PDF Liaison Working Group

Almost every email client can save email messages as PDF files, but none do so in a manner that retains email structures or metadata proving message authenticity. The EA-PDF specification development effort will explore a better way.

A swirl of email.


SafeDocs unearths PDF inline image issue

This freely-available PDF file includes 8 test cases that only render correctly if the abbreviated key name is used. If the full key name is used then something else happens (precisely what is implementation dependent!).

Screen-shot of a test failure.


PDF 2.0 corrections now easier to use

PDF issues has been redesigned based on industry feedback: all resolved errata are now published via https://pdf-issues.pdfa.org.

Screen-shot of correction to issue 81.