What Is PDF/UA-1 Compliance?

PDF/UA-1 is the technical standard for accessible PDF documents. The designation stands for “PDF/Universal Accessibility,” and it's formally published as ISO 14289-1:2014, an international standard maintained by ISO/TC 171/SC 2, currently in its second edition and reconfirmed as recently as 2025.

What the standard actually requires

PDF/UA-1 defines how to use the underlying PDF specification (ISO 32000-1) to produce documents that work correctly with assistive technology, particularly screen readers. That means:

• A correct tag structure (the document's underlying accessibility tree, not just its visual layout)
• Reading order that matches the logical structure, not just the visual left-to-right flow
• Alternative text for meaningful images
• Properly marked table headers and data cells
• Language identification
• No reliance on color alone to convey information

Why it matters for Medicare Advantage documents

ANOC, EOC, and Summary of Benefits documents are dense, tabular, multi-column PDFs. This is exactly the document shape where PDF/UA-1 violations are most common and most consequential. A screen reader user relying on a broken reading order in an EOC's benefits table isn't getting a degraded experience. They're getting wrong information about their own coverage.

PDF/UA-1 is a conformance standard, not a checklist

This is the detail that gets missed most often. Passing an automated accessibility checker is not the same as conforming to PDF/UA-1. (This connects directly to the next post in this series on that distinction.)