WARNING: This document is OBSOLETE.

The EPUB Accessibility Vocabulary is now an appendix of the EPUB Accessibility Specification.

EPUB Accessibility Vocabulary

5 October 2016

Document history


Matt Garrish, Invited Expert

Copyright © 2010-2016 International Digital Publishing Forum™

All rights reserved. This work is protected under Title 17 of the United States Code. Reproduction and dissemination of this work with changes is prohibited except with the written permission of the International Digital Publishing Forum (IDPF).

EPUB is a registered trademark of the International Digital Publishing Forum.

Status of this Document

This document is subject to change at any time. The terms defined herein will never be removed, but may be deprecated.

Any use of terms marked [draft] should be considered experimental.

Deprecated term are identified by the label [deprecated]. These terms are no longer recommended for use.

Requests for additions, modifications and clarifications can be made through the Issue Tracker. Pull requests are also welcome.

Refer to the IDPF Issue Reporting Guidelines for more information about the change request process.

  1 Overview

  1.1 About this Vocabulary

This section is informative

This vocabulary defines properties for describing the accessibility of EPUB Publications in the Package Document metadata.

This vocabulary is a companion to the EPUB Accessibility specification and is intended to be read in conjunction with that document.

  1.2 Referencing

The base IRI for referencing this vocabulary is http://www.idpf.org/epub/vocab/package/a11y/#.

The prefix "a11y:" is reserved for use with properties in this vocabulary and does not have to be declared in the Package Document.

  1.3 Terminology

Terms with meanings specific to EPUB are capitalized in this document (e.g., "Author", "Reading System"). See the EPUB Accessibility specification for their meanings.

Only the first instance of a term in a section is linked to its definition.

  2 Conformance Properties

  2.1 certifiedBy

Name: certifiedBy
Description: Identifies a party responsible for the testing and certification of the accessibility of an EPUB Publication.
Allowed value(s): xsd:string
Cardinality: One or more
Example: <meta property="a11y:certifiedBy">Accessibility Testers Group</meta>

  2.2 certifierCredential

Name: certifierCredential
Description: Identifies a credential or badge that establishes the authority of the party identified in the certifiedBy property to certify content accessible.
Allowed value(s): xsd:string
Cardinality: Zero or more
Example: <meta property="a11y:certifierCredential">DAISY OK</meta>

  2.3 certifierReport

Name: certifierReport
Description: Provides a link to an accessibility report created by the party identified in the certifiedBy property.
Allowed value(s): xsd:anyURI
Cardinality: Zero or more
Example: <link rel="a11y:certifierReport" href="http://example.com/a11y/reports/9780000000001"/>