Content features of the resource, such as accessible media, supported enhancements for accessibility and alternatives.


Example 1 — EPUB 3
<meta property="schema:accessibilityFeature">captions</meta>
<meta property="schema:accessibilityFeature">alternativeText</meta>
Example 2 — EPUB 2
<meta name="schema:accessibilityFeature" content="captions"/>
<meta name="schema:accessibilityFeature" content="alternativeText"/>
Example 3 — Audiobooks
"accessibilityFeature": ["captions", "alternativeText"]
Example 4 — HTML with RDFa
<p>Video includes
   <span property="accessibilityFeature">captions</span>.</p>
Example 5 — HTML with microdata
<p>Video includes
   <span itemprop="accessibilityFeature">captions</span>.</p>


The following values are used to identify features of the content that are helpful for accessibility.


Unless the metadata format used supports lists (e.g., JSON-LD), use a separate property declaration for each feature. Do not merge the values into a single property using spaces, commas, or other delimiters.

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