Accessibility information (eng)

To make digital products and services accessible to people with disabilities, the European Accessibility Directive was published and widely adopted in 2019. This directive has been converted into Dutch law and will apply to e-books and audiobooks, among other things, from June 28, 2025.

It is therefore necessary that the metadata regarding accessibility is described so that this can be shown by booksellers, libraries, etc. to their users so that they can make the right choice.

Visual adjustments
Description	ONIX element	M/O	Codelist	Value
This indicates whether a user can change the appearance of the text or page provided the reading device can handle it.
Description	ONIX element	M/O	Codelist	Value
The appearance of the text and page layout can be customized (font, font size, color etc.)	ProductFormFeatureType ProductFormFeatureValue	M	79 196	09 36	These values exclude each other
Text and page layout cannot be adjusted, the reading experience is similar to a printed book	ProductFormDetail	M	175	E201 (fixed format)
Possibility to customize the appearance is unknown	If previous 2 not included	O/M	-	-
Ondersteunt niet-visueel lezen
Indicates whether all content is available to assistive and reading systems that use text-to-speech or electronic braille functionality.
Description	ONIX element	M/O	Codelist	Value
Full content is available via read-aloud and electronic braille	ProductFormFeatureType ProductFormFeatureValue	M M	79 196	09 52
Full alternate audio description for non-text content	ProductFormFeatureType ProductFormFeatureValue	M M	79 196	09 28
Voldoet aan standaarden
Description	ONIX element	M/O	Codelist	Value
EPUB Accessibility Specification 1.0 A	ProductFormFeatureType ProductFormFeatureValue ProductFormFeatureDescription	M M O	79 196	09 02	These values exclude each other
EPUB Accessibility Specification 1.0 AA	ProductFormFeatureType ProductFormFeatureValue ProductFormFeatureDescription	M M O	79 196	09 03
EPUB Accessibility Specification 1.1	ProductFormFeatureType ProductFormFeatureValue ProductFormFeatureDescription	M M O	79 196	09 04
PDF/UA-1	ProductFormDetail ProductFormFeatureType ProductFormFeatureValue ProductFormFeatureDescription	M M M O	175 79 196	E107 of E108 09 05	These values exclude each other
PDF/UA-2	ProductFormDetail ProductFormFeatureType ProductFormFeatureValue ProductFormFeatureDescription	M M M O	175 79 196	E107 of E108 09 06	These values exclude each other
WCAG v2.0	ProductFormFeatureType ProductFormFeatureValue ProductFormFeatureDescription	M M O	79 196	09 80	These values exclude each other
WCAG v2.1	ProductFormFeatureType ProductFormFeatureValue ProductFormFeatureDescription	M M O	79 196	09 81
WCAG v2.2	ProductFormFeatureType ProductFormFeatureValue ProductFormFeatureDescription	M M O	79 196	09 82
WCAG level AA	ProductFormFeatureType ProductFormFeatureValue ProductFormFeatureDescription	M M O	79 196	09 85	These values exclude each other
WCAG level AAA	ProductFormFeatureType ProductFormFeatureValue ProductFormFeatureDescription	M M O	79 196	09 86
WCAG level A	ProductFormFeatureType ProductFormFeatureValue ProductFormFeatureDescription	M M O	79 196	09 84
Additionally, the following information may be included:
Description	ONIX element	M/O	Codelist	Value
Certification Compliance by (name)	ProductFormFeatureType ProductFormFeatureValue ProductFormFeatureDescription	M M M	79 196	09 90
Last date of certification	ProductFormFeatureType ProductFormFeatureValue ProductFormFeatureDescription	M M M	79 196	09 91
Accessibility Addendum	ProductFormFeatureType ProductFormFeatureValue ProductFormFeatureDescription	M M M	79 196	09 92
Certification Compliance by (URL)	ProductFormFeatureType ProductFormFeatureValue ProductFormFeatureDescription	M M M	79 196	09 93
Web page with detailed certification information	ProductFormFeatureType ProductFormFeatureValue ProductFormFeatureDescription	M M M	79 196	09 94
Pre-recorded audio
Indicates the presence of pre-recorded audio and specifies whether this audio is standalone (an audiobook), accompanied by text (embedded audio and video clips), or an alternative to the text (synchronized text-audio playback).
Description	ONIX element	M/O	Codelist	Value
Audio only	PrimaryContentType ProductFormFeatureType ProductFormFeatureValue	M M M	81 79 196	01 09 39
Content supports reading via pre-recorded audio	PrimaryContentType ProductFormFeatureType ProductFormFeatureValue	M M M	81 79 196	01 09 51
Pre-recorded synchronized audio and text	PrimaryContentType ProductFormFeatureType ProductFormFeatureValue	M M M	81 79 196	01 09 20
Navigation
Displays the navigation options in the publication.
Description	ONIX element	M/O	Codelist	Value
Includes a table of contents that provides direct access to all chapters	ProductFormFeatureType ProductFormFeatureValue	M M	79 196	09 11
IIndex contains direct links to terms in the main text	ProductFormFeatureType ProductFormFeatureValue	M M	79 196	09 12
One logical reading order	ProductFormFeatureType ProductFormFeatureValue	M M	79 196	09 13
Contains references to page numbering of the physical book	ProductFormFeatureType ProductFormFeatureValue	M M	79 196	09 19
Correct markers for next/previous navigation in the book	ProductFormFeatureType ProductFormFeatureValue	M M	79 196	09 29
Orientation navigation	ProductFormFeatureType ProductFormFeatureValue	M M	79 196	09 32
Graphs, charts and formulas
Indicates the presence of formulas (mathematical, chemical, etc.).
Description	ONIX element	M/O	Codelist	Value
Contains diagrams as non-graphical data	ProductContentType ProductFormFeatureType ProductFormFeatureValue	M M M	81 79 196	19 09 16
Diagrams, graphs and formulas as short alternative text	ProductContentType ProductFormFeatureType ProductFormFeatureValue	M M M	81 79 196	19 09 14
Diagrams, graphs and formulas as full description	ProductContentType ProductFormFeatureType ProductFormFeatureValue	M M M	81 79 196	19 09 15
Contains chemical formulas as ChemML	ProductContentType ProductFormFeatureType ProductFormFeatureValue	M M M	81 79 196	47 09 18
Contains chemical formulas as MathML	ProductContentType ProductFormFeatureType ProductFormFeatureValue	M M M	81 79 196	47 09 34
Contains mathematical formulas as MathML	ProductContentType ProductFormFeatureType ProductFormFeatureValue	M M M	81 79 196	48 09 17
Contains chemical formulas as LaTeX	ProductContentType ProductFormFeatureType ProductFormFeatureValue	M M M	81 79 196	47 09 35
Accessibility Summary
This can provide a summary of accessibility in prose.
Description	ONIX element	M/O	Codelist	Value
Accessibility summary	ProductFormFeatureType ProductFormFeatureValue ProductFormFeatureDescription	M M M	79 196	09 00
Legal exceptions
Description	ONIX element	M/O	Codelist	Value
Exception for micro enterprises	ProductFormFeatureType ProductFormFeatureValue ProductFormFeatureDescription	M M M	79 196	09 75
Exception for disproportionate taxation	ProductFormFeatureType ProductFormFeatureValue ProductFormFeatureDescription	M M M	79 196	09 76
Exception for fundamental change	ProductFormFeatureType ProductFormFeatureValue ProductFormFeatureDescription	M M M	79 196	09 77
Additionele toegankelijkheidsinformatie
Below is displayed accessibility information that does not fit into the other categories.
Structuring aids
Description	ONIX element	M/O	Codelist	Value
Accessible Rich Internet Applications (ARIA) roles are used	ProductFormFeatureType ProductFormFeatureValue	M M	79 196	09 30
Accessible controls for interactive content	ProductFormFeatureType ProductFormFeatureValue	M M	79 196	09 31
Adjustments
Description	ONIX element	M/O	Codelist	Value
Readable with dyslexia	ProductFormFeatureType ProductFormFeatureValue	M M	79 196	09 24
Brightness
Description	ONIX element	M/O	Codelist	Value
Text to speech hint provided	ProductFormFeatureType ProductFormFeatureValue	M M	79 196	09 21
Provided with language tags	ProductFormFeatureType ProductFormFeatureValue	M M	79 196	09 22
Color is not the only means of conveying information	ProductFormFeatureType ProductFormFeatureValue	M M	79 196	09 25
High contrast between text and background	ProductFormFeatureType ProductFormFeatureValue	M M	79 196	09 26
Ultra high contrast between text and background	ProductFormFeatureType ProductFormFeatureValue	M M	79 196	09 37
High contrast between foreground and background sounds	ProductFormFeatureType ProductFormFeatureValue	M M	79 196	09 27
Limited or unknown accessibility
Description	ONIX element	M/O	Codelist	Value
Unknown accessibility	ProductFormFeatureType ProductFormFeatureValue	M M	79 196	09 08	If this is provided, no other values except 00 may be provided.
Inaccessible or known limited accessibility	ProductFormFeatureType ProductFormFeatureValue	M M	79 196	09 09
More information about accessibility
Description	ONIX element	M/O	Codelist	Value
Web page of a reliable intermediary for detailed accessibility information	ProductFormFeatureType ProductFormFeatureValue ProductFormFeatureDescription	M M M	79 196	09 95
Publisher's web page for detailed accessibility information	ProductFormFeatureType ProductFormFeatureValue ProductFormFeatureDescription	M M M	79 196	09 96
Compatibility tested	ProductFormFeatureType ProductFormFeatureValue ProductFormFeatureDescription	M M M	79 196	09 97
Email address of reliable intermediary	ProductFormFeatureType ProductFormFeatureValue ProductFormFeatureDescription	M M M	79 196	09 98
Publisher's email address	ProductFormFeatureType ProductFormFeatureValue ProductFormFeatureDescription	M M M	79 196	09 97