Accessibility Test Cases

Licensing and attribution

Third-party notices

Source-specific notices for the external material and references used by this library.

Scope

The repository's original code and procedure text are distributed under the repository MIT License. These notices cover the limited external-source material and references recorded in the source-rights register. They do not change third-party ownership, license a different use, imply endorsement or replace lawful access to a referenced standard or product.

World Wide Web Consortium (W3C)

The linked W3C and WAI sources are used under the W3C Document License 2023. The procedures use bibliographic references and limited copied or derived supporting material for implementing accessibility tests. They are not W3C technical specifications and are not endorsed by W3C.

The W3C source URL, copyright notice and document status must remain with copied portions. W3C names and marks must not be used for advertising or publicity without permission.

Matterhorn Protocol 1.1

Matterhorn Protocol 1.1 - PDF/UA Conformance Testing Model, Copyright © 2021 PDF Association, is licensed under the Creative Commons Attribution 4.0 International License.

These independently authored procedures include factual summaries and material informed by the protocol. Changes were made. PDF Association does not endorse this library. CC BY 4.0 material may be shared and adapted commercially when credit, source and licence links, and change indications are retained, and no additional legal or technological restrictions are imposed on the licensed material.

GOV.UK guidance

Contains public sector information licensed under the Open Government Licence v3.0.

No official status or endorsement is implied. Open Government Licence exclusions, including third-party rights and protected marks, continue to apply.

ISO standards

ISO publications are proprietary and are not redistributed with this repository. The procedures use dated references by standard number, title and edition only. Any normative PDF/UA testing requires lawful access to the applicable standard. Do not copy, scan, distribute or expose ISO text through this product.

See ISO copyright and ISO's guidance on direct references.

Product documentation and other reference-only material

The following sources are cited to identify products, publications or independently authored testing steps. Their manuals, screenshots, logos, images and substantive passages are not distributed with this repository. Product and company names are used only for identification and do not imply endorsement.

Verification boundary

The source-rights register is verified for the exact product use and evidence recorded on 27 August 2026. Copying more source text or assets, changing a use, removing a required notice, or using a publisher mark for promotion requires a new disposition. Original-work ownership is recorded in the register; organisational commercial release authority remains separate.