This document crosswalks the accessibility metadata for Schema.org, EPUB, and ONIX.

EPUB and ONIX

The following table provides a crosswalk between the properties defined in the EPUB Accessibility specification [[EPUB-A11Y-11]] and the equivalents defined in the ONIX metadata standard [[ONIX]].

The conformsTo term used in EPUB is drawn from Dublin Core.

EPUB ONIX
certifiedBy
certifierReport List: 196; Code: 94: Compliance web page for detailed accessibility information or, if a publisher is self-certifying, Code: 96: Publisher's web page for detailed accessibility information
certifierCredential
dcterms:conformsTo with the URL http://www.idpf.org/epub/a11y/accessibility-20170105.html#wcag-a List: 196; Code: 02: EPUB Accessibility Specification 1.0 A
dcterms:conformsTo with the URL http://www.idpf.org/epub/a11y/accessibility-20170105.html#wcag-aa List: 196; Code: 03: EPUB Accessibility Specification 1.0 AA

Schema.org and ONIX

The following table provides a crosswalk between the Schema.org metadata and ONIX standard [[ONIX]].

Schema.org ONIX
accessibilityFeature (vocabulary list follows) List 196 (specific codes follow)
alternativeText List: 196; Code: 14: Short alternative descriptions
annotations
audioDescription
bookmarks N/A (Reading system feature)
braille
captions
ChemML List: 196; Code: 18: Accessible chem content
describedMath
displayTransformability
highContrastAudio
highContrastDisplay
index List: 196; Code: 12: Index navigation
largePrint
latex
longDescription List: 196; Code: 15: Full alternative descriptions; 16: Visualised data also available as non-graphical data
MathML List: 196; Code: 17: Accessible math content
none
printPageNumbers List: 196; Code: 19: Print-equivalent page numbering
readingOrder List: 196; Code: 13: Reading order
rubyAnnotations
signLanguage
structuralNavigation
sychronizedAudioText List: 196; Code: 20: Synchronised pre-recorded audio
tableOfContents List: 196; Code: 11: Table of contents navigation
taggedPDF
tactileGraphic
tactileObject
timingControl
transcript
ttsMarkup List: 196; Code: 21: Text-to-speech hinting provided; 22: Language tagging provided
unlocked
List: 196; Code 22: Language tagging provided – helps with TTS in multi-lingual content
List: 196; Code 24: Dyslexia readability
List: 196; Code 09: Inaccessible
List: 196; Code 10: No reading system accessibility options disabled
accessibilityHazard (vocabulary list follows)
flashing
noFlashingHazard
motionSimulation
noMotionSimulationHazard
sound
noSoundHazard
unknown
accessibilityAPI (vocabulary list follows)
AndroidAccessibility
ARIA
ATK
AT-SPI
BlackberryAccessibility
iAccessible2
iOSAccessibility
JavaAccessibility
MacOSXAccessibility
MSAA
UIAutomation
accessibilityControl (vocabulary list follows)
fullKeyboardControl
fullMouseControl
fullSwitchControl
fullTouchControl
fullVideoControl
fullVoiceControl
accessMode (vocabulary list follows)
auditory
chartOnVisual List: 81; Code 19: Figures, Diagrams, Charts
chemOnVisual
colorDependent
diagramOnVisual List: 81; Code 19: Figures, Diagrams, Charts
mathOnVisual
musicOnVisual
tactile
textOnVisual
textual List: 81; Code: 10 combined with List: 196; Code: 10 means all text is actual text. Note that List: 81; Code: 10 on its own (without List: 196; Code: 10) admits the possibility that the "text" is inaccessible because it is an image of text.
visual List: 81; Code: 07: Still images / graphics or Code: 18: Photographs or Code: 19: Figures, diagrams, charts, graphs or Code: 12: Maps and/or other cartographic content
accessModeSufficient (vocabulary list follows) ONIX crosswalks are for instances where accessModeSufficient includes this vocabulary entry alone; combinations may occur but are more difficult to crosswalk
auditory List: 81; Code:01
tactile
textual List: 81; Code: 10 combined with List: 196; Code: 10 means all text is actual text. Note that List: 81; Code: 10 on its own (without List: 196; Code: 10) admits the possibility that the "text" is inaccessible because it is an image of text.
visual
accessibilitySummary List: 196; Code: 00: Accessibility Summary
Human-readable text If present, include information from List: 196; Codes 95, 96, 98, and 99 (links for further information about accessibility)