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.



New process to highlight how PDF’s latest specification answers many questions

A new PDF Association service will provide targeted test-cases to highlight interoperability issues resolved in the latest PDF specification.

Abstract graphic depicting specific questions and industry answers.

PDF – From Visionary Format to Business Mainstay

Author and longtime PDF evangelist Tony McKinley’s latest book, “PDF Expert”, shares his experience working directly with the world’s most demanding companies and users over the last 25 years.

Book cover for PDF Expert by Tony McKinley

PDF Forms to be discussed in Paris

The May meeting of the PDF Forms TWG will begin work on a draft specification for declarative forms in PDF.

A fillable form

Deriving HTML from PDF Explored in Paris

The Deriving HTML from PDF TWG’s specification is an important part of their program of work as it supports one of the most critical use cases for well-tagged pdfs – deriving html from pdf.

HTML for document type

PDF Reuse on the agenda for PDF Week Paris

The goal of the Well-Tagged PDF (WTPDF) specification is to ensure high-quality documents that are suitable for content reuse, extraction, reflow and more. The PDF Reuse TWG meeting in Paris will have WTPDF as the focus of its discussions.

Screenshot of bookmarks from the document.

PDF Accessibility LWG Discusses Techniques for achieving PDF/UA and WCAG compliance

The PDF Accessibility Liaison Working Group (LWG) is taking aim at providing a full set of techniques to demonstrate correct solutions for all tagging issues.

Screen shot of list tags hierarchy

Making PDF/A conversion easier

PDF/A – the ISO standard for long-term archiving – now has four sub-standards. This raises an obvious question: which one should businesses use for document conversion and archival? Dietrich von Seggern from callas software gives the answer.

Two red buttons one with Convert to PDF/A-1 and the other with Convert to PDF/A-2 and a finger getting ready to tap one of the buttons

RichMedia and 3D PDF Working Groups Meet in Paris

The 3D and RichMedia Technical Working Groups will be combining for an in-person session during PDF Week 2023 Paris to review developments in PDF-embedded 3D models and associated multimedia.

3D PDF logo

Digital Signature TWG at PDF Week

The Digital Signature Technical Working Group chair lays out the work to be discussed at PDF Week Paris 2023.

Electronic document being signed

PDF/UA Processor LWG in Paris

The PDF/UA Processor LWG will continue the work of developing a processor and AT specification to help drive better accessible PDF experiences for all!