EPUB 3 - Full Accessibility Metadata (schema.org + conformsTo)
An EPUB 3 carrying the accessibility metadata distributors now require: schema:accessMode, accessModeSufficient, four accessibilityFeature values, a hazard statement, a written summary, and a dcterms:conformsTo link. The claims are true of the file, so a checker can verify rather than take the metadata's word.
- mimetype
- container.xml
- content.opf
- nav.xhtml
- style.css
- cover.png
- chapter1.xhtml
Specifications
- Seed
- 20260807
- Epub Version
- 3.0
- Access Modes
- textual, visual
- Access Mode Sufficient
- textual
- Accessibility Features
- 4
- Accessibility Hazard
- none
- Has Accessibility Summary
- true
- Conforms To
- EPUB Accessibility 1.0 WCAG 2.0 Level AA
Testing contract
Expected to pass- Scenario
- Run an accessibility metadata check and compare each claim against the content.
- Expected result
- Every declared value is present and accurate: the reading order and headings back structuralNavigation, the nav document backs tableOfContents, and the one image really does carry alternative text.
What is a .epub file?
EPUB is the open e-book standard, a ZIP archive containing XHTML content documents, CSS, images, and a package manifest describing reading order and metadata. It supports reflowable text that adapts to screen size and is supported by most e-readers except Kindle natively. It is the dominant format for distributable e-books.
How to use this file
Use an example EPUB to test e-book parsing, ZIP-package and manifest handling, reading-order and metadata extraction, and rendering in e-reader applications.
How to use this file for testing
“EPUB 3 - Full Accessibility Metadata (schema.org + conformsTo)” is a deterministic Novus Examples fixture for Media accessibility, Metadata testing. Containers carrying several subtitle and audio tracks at once, with real language tags and the default, forced, hearing-impaired and visual-impaired flags actually set — for testing track pickers, accessibility menus, and the flag handling that only shows up when more than one track exists.
Documented properties for this file: seed 20260807. Compare results against paired or grouped companions on this page when present (clean↔damaged, searchable↔scanned, or format twins) so scores stay reproducible across runs.
Download the file once, keep the path stable in CI or local scripts, and treat the spec table as the contract: dimensions, seeds, field lists, and roles are intentional. Corrupt or invalid samples are labelled as such — expect parsers to fail loudly rather than silently accept them.
E-book fixtures are structured archives documented down to their spine and manifest. Test readers and converters, and where a valid↔intentionally-invalid pair exists, assert graceful handling of the malformed container.
Code examples
ebook-convert accessibility-metadata.epub out.pdf # Calibre
unzip -l accessibility-metadata.epub # EPUB is a ZIPRelated files
- azwConvert v2 DRM-Free AZW E-bookDRM-free AZW/MOBI7 e-book source copied byte-for-byte from the catalog's valid reader fixture for legacy import testing. Stable P8 artifact p8-convert-legacy-azw.
- cbrConvert v2 Two-Page CBR ComicValid CBR comic container with two deterministic PNG pages in lexical reading order for legacy comic conversion. Stable P8 artifact p8-convert-legacy-cbr.
- epubEPUB 2.0.1 - Cover by meta name="cover" Only (no guide, no cover page)The cover convention that predates every standard way of doing it: a bare meta name="cover" pointing at a manifest id, with no guide reference, no cover XHTML page and nothing in the spine. For testing cover extraction against the messiest of the three EPUB 2 conventions.
- epubEPUB 2.0.1 - NCX pageList with pageTargetsAn EPUB 2.0.1 that records print pagination the older way: an NCX pageList of pageTarget elements pointing at anchors in the text. The EPUB 2 counterpart of the EPUB 3 page-list nav, and what a converter has to translate between.
- epubEPUB 3 - MathML with altimg and alttext FallbackThe same equation carrying the fallbacks a reader without a MathML engine needs: an altimg raster, its declared dimensions and baseline offset, and an alttext reading of the formula for speech. For testing fallback selection and what a screen reader announces.
- epubEPUB 3 - Media Overlay (SMIL + MP3 narration)An EPUB 3 with a real media overlay: a SMIL document ties three paragraph ids to clip ranges in an embedded MP3, and the package declares media:duration and media:active-class. The narration track is deliberately silent audio, so the fixture stays small and byte-identical on every run.
Generated by generation/ebooks_p7.py. Free for any use, no attribution required — license.