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ISO standards, test suites, best-practice guides…

The PDF Association publishes a variety of documents and other resources for those interested in leveraging PDF technology, and as of Q4 2021, also sells the ISO standards relating to PDF technology as developed by ISO TC 171 SC 2.

In addition to formal ISO standards many PDF Association publications developed through our publications process are freely available.

PDF Association members may access process documents and drafts of upcoming ISO standards via the Member Area.

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ISO 32000 (PDF)

PDF 2.0

ISO 32000 is the family of ISO standards that defines the core PDF specification for both PDF 1.7 and PDF 2.0.

PDF Association cover for ISO 32000-2 sponsored by Adobe, Apryse and Foxit.


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The Matterhorn Protocol 1.1

The Matterhorn Protocol, a free publication, identifies all possible ways to fail PDF/UA-1.

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PDF/UA Reference Suite 1.1

The PDF/UA Reference Suite is a resource for software developers and practitioners interested in best-practices for creating tagged and accessible PDF files

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Deriving HTML from PDF

This document describes an algorithm for producing conforming HTML from a well-tagged PDF document. HTML was chosen as a derivation target because HTML is consumed on all platforms and supported by all major vendors.

Cover of Deriving HTML from PDF.


Tagged PDF Best Practice Guide: Syntax

The latest update to the original Tagged PDF Best Practice Guide includes guidance for all structure element types and attributes, and provides forward-looking guidance for PDF 2.0.

Cover of Tagged PDF Best Practice Guide.


PDF/UA (Flyer)

PDF/UA is the common name for ISO 14289. An international standard approved in 2012, PDF/UA defines how to represent electronic documents in the PDF format in a manner that allows the file to be accessible. The standard identifies PDF components …

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ISO 14289 (PDF/UA)

ISO 14289 (PDF/UA) defines the use of tagged PDF providing a mechanism for reuse of PDF page content, especially in the accessibility context.

ISO 14289-1 Document management applications Electronic document file format enhancement for accessibility Part 1 Use of ISO 32000-1 PDF/UA-1 cover with PDF Association logo


PDF/UA in a Nutshell

ISO 14289-1, more commonly known as PDF/UA, was first published in the summer of 2012 as the first complete definition of a set of requirements for universally accessible PDF documents. Rather than applying to the PDF file format alone, these …

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PDF/UA sessions at the PDF Technical Conference 2012

An afternoon of the Technical Conference 2012 in March 27-28, 2012 in Basel, Switzerland was dedicated to PDF/UA, tagged PDF and accessibility of PDF and PDF programs. All three presentations from the PDF/UA session were recorded. What does it feel …

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4th International PDF/A Conference Proceedings

Contents What you need to know about PDF/A and PDF/A-2 Legal Certainty Accessibility and Metadata Archives & Libraries Public Administration Business to Consumer The Portable Document Format – developed by Adobe Systems and first published in 1993 – offers a …

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