The contents of the PDF have been tagged to permit access by assistive technologies.


Example 4 — HTML with RDFa
<span property="accessibilityFeature" title="taggedPDF">
   tagged PDF
Example 5 — HTML with microdata
<span itemprop="accessibilityFeature" title="taggedPDF">
   alternative text


The taggedPDF value is used to indicate that a PDF includes accessibility tags to improve its readability.

Accessibility tags are a way of labeling the components of a PDF to try and retain some of the semantics that are otherwise only visually present. They are a key part of the PDF Universal Accessibility (PDF/UA) standard.

This value is not relevant to Web-based publication formats such as EPUB.

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