PDF Reading Order Audit
Compare a PDF's structure-tree reading order against the visual top-to-bottom layout of its content. Flag pages where the tag sequence diverges from visual order.
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How does the PDF Reading Order Audit work?
Audit a tagged PDF's reading order: does the structure tree's tag sequence (which screen readers follow) match the visual top-to-bottom flow of the page? Mismatches indicate the document was tagged in a different order than it visually reads, causing screen-reader users to hear content in the wrong sequence. The tool walks pages, samples the structure tree's text-bearing tags, infers their visual position, and flags pages where the tag order significantly diverges from top-to-bottom order. Per WCAG 2.2 SC 1.3.2 and PDF/UA-1 §7.1.
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Frequently asked
For heavier PDF workflows
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