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Competence Center Chair
Duff Johnson
PDF/UA Competence Center

The PDF/UA Competence Center provides resources for developers, marketers and policy makers who need to understand ISO 14289, the International Standard for universally accessible PDF, first published in August 2012.

PDF/UA is of interest to organizations concerned with conformance to regulations requiring accessible electronic content including WCAG 2.0, Section 508 in the US, Canada’s Common Look and Feel standard, Britain’s BS 8878, and others.

Join us!

The PDF/UA Technical Working Group (TWG) is a collaboration of PDF software developers and PDF accessibility subject matter experts who use the TWG’s resources to share their knowledge and experience of PDF/A technology in a vendor-neutral space.

Members of the PDF Association are entitled to participate in online and in-person PDF/UA TWG meetings, subscribe to the PDF/UA TWG listserv, access the PDF Association’s Jira, and gain other benefits as well. Review the options for membership, or get in touch with PDF Association Executive Director Duff Johnson to learn more!

History of PDF/UA

PDF/UA english

Download the PDF/UA Competence Center’s PDF/UA flyer, itself a PDF/UA-conforming document.

Note: ISO 14289-1:2014 is ISO’s first fully accessible standard; the document conforms to PDF/UA.

Competence Center Member


Adam Spencer


Duff Johnson


Ferass Elrayes


Jens Kirkegaard


Kai Jing


Matthew Hardy


Olaf Drümmer


Sabine Eichler


Samuel Hofer


Shaun Emond