Technical Notes, best-practice guides, test suites, educational videos and more

The PDF Association publishes a variety of documents and other resources to help developers, product managers, and others interested in leveraging PDF to meet their business and organizational objectives.

Most publications listed on pdfa.org are developed through our publications process, and are freely available to members and non-members alike.

PDF Association members may access drafts of current and upcoming ISO standards via the members-only intranet.


The Matterhorn Protocol 1.1


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

Matterhorn Protocol 1.1 cover page



ISO 32000 (PDF)

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

ISO 32000-2 Document management Portable Document Format Part 1 PDF 2.0 cover with PDF Association logo

RFC 8118 (application/pdf Media Type)

RFC 8118 defines the application/pdf Media Type and provides an overview of PDF fragment identifiers.

PDF icon with upper right corner folded down and red arrow pointing right and gray arrow pointing left

PDF Specification Index

This page provides external links to legacy Adobe PDF references and errata, as well as the ISO 32000 family of standards. PDF Version Year Reference Documents Adobe PDF 1.0 1993 Portable Document Format Reference Manual Version 1.0 (ISBN 0–201–62628–4) Adobe …

PDF icon with upper right corner folded down and red arrow pointing right and gray arrow pointing left

Stressful PDF Corpus

Understanding the problems faced by diverse parsers can be a great learning experience. The “Issue Tracker” corpus of stressful PDF files was originally developed under the DARPA-funded “SafeDocs” program.

Bell cure of PDF complexity.

ISO 32000 – the core PDF specification

ISO 32000-2:2020 is the current version of the PDF specification. It was developed by the volunteers of ISO TC 171 SC 2 WG 8.

PDF 2.0 on iso.org

Solution Agent

The Solution Agent is a free service for the industry to provide organizations and individuals with a unique, vendor-neutral platform to begin their search

Solution Agent logo

PDF Declarations

PDF Declarations facilitate a machine-readable notification that a PDF file (and/or its contents) conform to a given 3rd party specification.

The cover of PDF Declarations

Electronic Document Conference – the sessions

Videos from the Electronic Document Conference 2019, held in Seattle, WA. The videos are posted on YouTube.

Movie icon.

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.

PDF Products and Services 2019

PDF Association members showcase the diversity of electronic document solutions in “PDF Products & Services 2019”.

Cover of PDF Products and Services 2019