pdf_a11y - Programmatic PDF Accessibility Remediation
Copyright 2026 ASSERT I.K.E. and contributors

This product is licensed under the Apache License, Version 2.0
(see the accompanying LICENSE file).

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External tooling invoked at runtime (not bundled in source form):

- veraPDF (PDF/UA-1 and WTPDF 1.0 Accessibility validation)
  https://verapdf.org/ - GPL v3 and MPL v2 (dual licensed)
  Installed at runtime via the bundled scripts/install-verapdf.{sh,ps1}
  or by the Docker image's build step.

  "veraPDF" is a trademark of the veraPDF Consortium / the PDF
  Association. This project uses the name nominatively to identify
  the validator it invokes. This project is not affiliated with,
  endorsed by, certified by, or sponsored by the veraPDF Consortium
  or the PDF Association.

- opendataloader-pdf (structure tagger)
  https://github.com/opendataloader-project/opendataloader-pdf
  Apache License 2.0
  Installed as a Python wheel dependency (see requirements.txt).

Python dependencies (FastAPI, pikepdf, PyMuPDF, openai, anthropic,
pydantic, etc.) carry their own licenses; see requirements.txt and
each upstream project for details.

Maintainer: ASSERT I.K.E. - info@assert.gr
Source:     https://github.com/adamopoulosa1980/pdf_accessibility

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Bundled example document:

The file examples/a short guide to the eu-NA0522433ENN.pdf is the
European Commission publication "A Short Guide to the EU".

  Title:     A Short Guide to the EU
  Author:    European Commission, Directorate-General for Communication
             Editorial Service & Targeted Outreach, 1049 Brussels, BE
  Year:      2023
  Source:    https://op.europa.eu/webpub/com/short-guide-eu/en
  Mirror:    https://www.eeas.europa.eu/sites/default/files/documents/2024/
             a%20short%20guide%20to%20the%20eu-NA0522433ENN.pdf
  ISBN:      978-92-68-07131-1
  DOI:       10.2775/523891
  Reference: NA-05-22-433-EN-C
  Copyright: (C) European Union, 2023
  Licence:   Creative Commons Attribution 4.0 International (CC BY 4.0)
             https://creativecommons.org/licenses/by/4.0/
  Reuse:     Per Commission Decision 2011/833/EU of 12 December 2011
             on the reuse of Commission documents (OJ L 330, 14.12.2011).

The file is included unmodified, solely as a reproducible demonstration
input for the pdf_a11y accessibility-remediation pipeline. The
pipeline's REMEDIATED OUTPUT is a derivative work of this document;
anyone redistributing that output must comply with CC BY 4.0 by
crediting the European Union and indicating that the document has
been modified for accessibility.

Per the document's own colophon: "All photos (C) European Union unless
otherwise stated. For any use or reproduction of elements that are not
owned by the European Union, permission may need to be sought directly
from the respective rightholders."

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Other third-party trademarks referenced in this project's documentation
for comparison and interoperability purposes only (nominative use):

- Adobe(R), Adobe Acrobat(R), and Autotag(R) are trademarks of
  Adobe Inc.

- PAC / PDF Accessibility Checker is a trademark of the PDF/UA
  Foundation (originally axes4 GmbH).

- CommonLook(R) is a trademark of NetCentric Technologies / Allyant.

This project is not affiliated with, endorsed by, certified by, or
sponsored by any of the above trademark holders.
