Free Tool
EPUB 3 Accessibility Scanner
Upload your digital publications to check core EPUB Accessibility 1.1 requirements: schema.org accessibility metadata, EPUB 3 navigation structure, and MathML presence, read directly from the OPF package document.
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What This Scanner Checks
Accessibility Metadata
Whether the OPF package document declares schema.org accessMode, accessibilityFeature, and accessibilitySummary properties.
EPUB 3 Navigation Document
Whether the manifest declares a properties="nav" item: the table of contents and landmarks document that screen readers rely on.
MathML Presence
Scans content files for MathML markup, needed for math content to be read correctly by assistive technology instead of as an image.
Also scanning PDF documents? Try the PDF/UA scanner.