Planet Earth with the light of cities illuminating Europe and the Middle East.
New large-scale PDF corpus now publicly available

This new corpus – nearly 8 million PDFs totaling about 8 TB – was gathered from across the web in July/August of 2021.



Australia and New Zealand jointly adopt PDF/A-4

The joint Australian and New Zealand national committee on Records and Document Management Systems recommendation to both Standards Australia and Standards New Zealand to adopt PDF/A-4 was completed on 23 December 2022.

ISO 19005-4 Document management Electronic document file format for long-term preservation Part 4 Use of ISO 32000-2 PDF/A-4 cover with PDF Association logo

CMap Resource Updates for Unicode 15.0

Adobe engineers have formally added support for Unicode 15 to the CMap resources for both Adobe-Japan1-7 and Adobe-KR-9 in the Adobe CMap Resources GitHub repository.

PDF 2.0 logo

PDF 2.0 and ISO 19445 XMP metadata for image and document proofing

How ISO 19445 might be used with PDF 2.0 and related technology updates relevant to the graphic arts industry.

XMP metadata

An update on PDF errata

CTO Peter Wyatt summarizes key takeaways from the first two years of the PDF specification’s public errata process.

PDF 2.0 modernizes cryptographic support

ISO TC 171 SC 2 is publishing new extensions and clarifications to PDF 2.0 in support of advanced cryptography.

PDF 2.0 security shield with crypto terms surrounding it

Quirks of PDF public-key encryption

A commentary on the interoperability of encrypting PDF documents with public-key cryptography.

Figurative depiction of cryptography with hands and a phone.

How are signers identified?

Identifying the signer’s key in a PDF signature: how does that work?

People exchange credentials.

How to optimally prepare PDF files for variable data printing

Dietrich von Seggern from callas software explains, how companies can optimally prepare PDF files for variable data printing.

Container ship called 'MS Dietrich'

How Google Trends sees “pdf” in 2022

As of October 28 2022 worldwide searches for “pdf” had peaked in March, 2022. Even as internet searches continue to rise worldwide, “pdf” keeps up.

Trend graph March 2022 pdf 100

End of life for Type 1 fonts in authoring applications

Some time ago Adobe announced that it “will disable support for authoring with Type 1 fonts by January 2023”. Dietrich von Seggern from callas software explains what that means from a prepress and PDF point of view.

Fonts: No risk, no fun? on a light maroon background