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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.


Deriving HTML from PDF

PDF in general PDF/UA

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 …



Technical Note 0006 – Digital Signatures in PDF/A-1

Digital signatures are primarily used to check the integrity of the signed part of the document. They also can be used to authenticate the signer¬ís identity and determine the time of signing. The concept of digital signatures was introduced in …

Technical Note 0002 – Color in PDF/A-1

The PDF/A-1 requirements related to color handling may be confusing to users and developers who are not familiar with color management concepts and ICC profiles. This TechNote describes the affected objects in PDF, details the requirements of PDF/A-1 with respect …

ISO 19005 (PDF/A)

The primary purpose of ISO 19005 is to define a file format based on PDF, known as PDF/A, which provides a mechanism for representing electronic documents in a manner that preserves their static visual appearance over time, independent of the …

The Camelot Project

Written by Adobe Systems co-founder Dr. John Warnock in 1990, the Camelot Project describes the vision that became PDF. Dr. Warnock created this PDF in 1995. It conforms with PDF 1.2, which explains the lack of accessibility features (introduced with …

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