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



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 …

Logo for ISO standard.

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

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/Raster 1.0

This document describes PDF/raster, a strict subset of the PDF file format designed for storing, transporting and exchanging multi-page raster-image documents.