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.

It Just Works: PDF turns 20!

June 2013 by PDF Association staff
Article


At 20 years of age PDF has remained very cool with customers and end users. Largely immune to the buzz and hype of Internet technologies PDF still dominates the idea … Read more

PDF Association logo
Visit PDF Association staff's profile.

February 2013 by PDF Association staff
PDF Association logo
Visit PDF Association staff‘s profile.

Where did PDF/A come from?

Article

June 2012 by Nicole Gauger
Visit Nicole Gauger‘s profile.

To promote awareness of PDF/UA, the forthcoming ISO Standard for accessible PDF, the PDF Association has partnered with the non-profit-organisation … Read more

Article

January 2012 by Duff Johnson
Duff Johnson
Visit Duff Johnson‘s profile.

The twice-annual PDF Standards Week for the winter of 2011-2012 was hosted by Microsoft in their Bravern facility in Bellevue, … Read more

Article

September 2011 by Olaf Drümmer
Visit Olaf Drümmer‘s profile.

The PDF/A Competence Center is now part of a larger organization dedicated to promoting International Standards for PDF. As the … Read more

Article

August 2011 by PDF Association staff
PDF Association logo
Visit PDF Association staff‘s profile.

The Isartor test suite is available from pdfa.org free of charge. It can be used to check PDF validation software … Read more

Article

May 2011 by 100th German Library Day Steps into the Future with PDF/A

More than 3,000 librarians from all provinces will exchange experiences and learn about new trends and developments in librarianship, including … Read more

Article

January 2011 by Duff Johnson
Duff Johnson
Visit Duff Johnson‘s profile.

Duff Johnson considers the Beyond the PDF workshop and suggests PDF/E as a means of developing real-world solutions for science … Read more

Article

January 2011 by Duff Johnson
Duff Johnson
Visit Duff Johnson‘s profile.

Duff Johnson reviews a recent report on PDF content accessibility produced by the Australian federal government. The Report accurately characterizes … Read more

Article

October 2010 by A Historic Setting for the 4th PDF/A Conference Sets the Stage for the Future

The PDF/A Competence Center, the professional association of the PDF/A community, expects great progress in PDF/A adoption over the next … Read more

Article

October 2010 by Duff Johnson
Duff Johnson
Visit Duff Johnson‘s profile.

NOTE: Since this article was published the ISO specification for PDF/A has added new “parts”. Visit the PDF/A resource page … Read more

Article

Member News

WordPress Cookie Notice by Real Cookie Banner