Help improve accessibility error messages with PDF4WCAG

Digital accessibility standards are essential but often hard to interpret in practice. Validating PDFs is key to ensuring content is usable for everyone, including people who rely on assistive technologies. The PDF4WCAG accessibility checker helps bridge the gap between technical requirements and real-world implementation, though more work is needed to make validation results clearer and easier to understand. The Challenge: Technical Standards vs. Practical Understanding Standards such as PDF/UA are written in dense, highly technical language. They are designed for precision and legal clarity — not for everyday usability. When a PDF accessibility checker reports validation errors, they are typically: Directly linked to specification clauses Worded in technical terminology Dependent on deep knowledge of PDF structure and object hierarchy For many users — even experienced accessibility professionals — interpreting these errors requires additional knowledge about PDF internals, tagging st