PDF Association logo

Discover pdfa.org

Key resources

Get involved

How do you find the right PDF technology vendor?
Use the Solution Agent to ask the entire PDF communuity!
The PDF Association celebrates its members’ public statements
of support
for ISO-standardized PDF technology.

Member Area

New Accessibility Techniques for PDF: Lists

November 2025 by PDF Association staff

The PDF Association’s third release of its Techniques for Accessible PDF focuses on lists!

This new guidance offers 15 correct (PASS) and 10 incorrect (FAIL) examples of list tagging to help authors properly tag lists in PDF documents.

Proper tagging supports assistive technologies, ensures correct list semantics (ordered, unordered, nested, etc.), and enables accurate reflow and conversions. The provided techniques and failure examples cover all basic types of lists and address common pitfalls. As always, these techniques are vendor-neutral and community-maintained.

The PDF Association’s third release of its Techniques for Accessible PDF focuses on lists!

This new guidance offers 15 correct (PASS) and 10 incorrect (FAIL) examples of list tagging to help authors properly tag lists in PDF documents.

Proper tagging supports assistive technologies, ensures correct list semantics (ordered, unordered, nested, etc.), and enables accurate reflow and conversions. The provided techniques and failure examples cover all basic types of lists and address common pitfalls. As always, these techniques are vendor-neutral and community-maintained.

Translating PDF 2.0 into Chinese

November 2025 by PDF Association staff
Article


An initiative to translate PDF 2.0 (ISO 32000-2) into Chinese aims to expand digital document interoperability and advance the PDF ecosystem with developers whose first language is Chinese.

PDF Association logo
Visit PDF Association staff's profile.

November 2025 by Peter Wyatt
Peter Wyatt
Visit Peter Wyatt‘s profile.

Understanding how URLs can exist and behave in PDF/A files is critical to preservationists who need to identify, audit, and … Read more

Article

October 2025 by Daniel Wilson (BFO (Big Faceless Organization))
Visit Daniel Wilson‘s profile.

The PDF industry is preparing for the quantum era by adopting post-quantum cryptography (PQC) standards. Following key developments at PDF … Read more

Article

September 2025 by Peter Wyatt
Peter Wyatt
Visit Peter Wyatt‘s profile.

ISO standardized subsets of PDF, such as PDF/UA, enable files to claim conformance to a specific version of PDF/UA using … Read more

Article

September 2025 by PDF Association staff
PDF Association logo
Visit PDF Association staff‘s profile.

According to Board chair Raf Hens: “The event showcased what makes the PDF ecosystem unique: a standards-driven, industry-wide collaboration where … Read more

Article

August 2025 by Jacob Mellor (Iron Software)
Jacob Mellor
Visit Jacob Mellor‘s profile.

This article is written from my perspective as a lifelong software engineer and current CTO who codes differently – first … Read more

Article

July 2025 by Peter Wyatt
Peter Wyatt
Visit Peter Wyatt‘s profile.

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

Article

July 2025 by Paul Rayius (Allyant)
Photo of Paul Rayius
Visit Paul Rayius‘s profile.

Experience since PDF/UA-1 was published has revealed that some rules were too prescriptive. In some situations the semantic significance of … Read more

Article

June 2025 by Patrick Gallot (Datalogics)
Patrick Gallot
Visit Patrick Gallot‘s profile.

PDF has long relied on Flate for general-purpose data compression. Today, Brotli has emerged as a promising new approach that … Read more

Article

June 2025 by Patrick Gallot (Datalogics)
Patrick Gallot
Visit Patrick Gallot‘s profile.

This article explains the options in allowing, limiting, and/or preventing data scraping from occurring when AI and text data mining … Read more

Article

June 2025 by PDF Association staff
PDF Association logo
Visit PDF Association staff‘s profile.

In support of the International Archives Week theme and its four subthemes, the PDF Association is announcing its forthcoming Best … Read more

Article

Member News

WordPress Cookie Notice by Real Cookie Banner