What this test checks
This test verifies that the document is identified as a tagged PDF by checking
its MarkInfo dictionary and ensuring the
Marked flag is present and set to true.
Why this maybe a barrier
A tagged PDF explicitly declares that it contains accessibility structure. This declaration allows PDF viewers, accessibility tools and assistive technologies to recognize that the document should be interpreted using its logical structure rather than relying solely on the visual page content.
If the document is not identified as a tagged PDF, some software may ignore its accessibility information or treat it as an untagged document, reducing the reliability of navigation and content interpretation.
WCAG 2.2 Success Criterion
1.3.1 Info and Relationships (Level A) — "Information, structure, and relationships conveyed through presentation can be programmatically determined or are available in text."
For more information, visit WCAG 2.2 Success Criteria 1.3.1, under the guideline Adaptable.
PDF/UA Principle
Section 7.1: General requires accessible PDF documents to be identified as tagged and to expose their logical structure for assistive technologies.