From 6f04de7c5e73987d75d89cb95cb86ad3de1bbb42 Mon Sep 17 00:00:00 2001 From: Dawn Childress Date: Wed, 4 Nov 2026 14:11:53 -0800 Subject: [PATCH 1/2] update `provides` registry --- source/registry/accessibility/index.md | 34 ++++++++++++++------------ 1 file changed, 18 insertions(+), 16 deletions(-) diff --git a/source/registry/accessibility/index.md b/source/registry/accessibility/index.md index f0b29fc91..961415fe0 100644 --- a/source/registry/accessibility/index.md +++ b/source/registry/accessibility/index.md @@ -59,22 +59,24 @@ The process for having a new entry added to this registry is [described here][re ## 3. Registry -This table summarizes the known values available for use with the [Presentation API][prezi-api] `provides` propery, which defines accessibility functionality that a linked resource enables for its target, describing why and how a client might use it rather than what the resource is by type or format. The current approved values are defined by Schema.org's [Accessibility Properties for Discoverability Vocabulary][schema-accessibility] and the IIIF Community. - -| Value | Description | Source | -| ------------------------------ | | -| `closedCaptions` | ... | Schema.org | -| `alternativeText` | ... | Schema.org | -| `audioDescription` | ... | Schema.org | -| `longDescription` | ... | Schema.org | -| `signLanguage` | ... | Schema.org | -| `highContrastAudio` | ... | Schema.org | -| `highContrastDisplay` | ... | Schema.org | -| `braille` | ... | Schema.org | -| `tactileGraphic` | ... | Schema.org | -| `transcript` | ... | Schema.org | -| `translation` | ... | IIIF | -| `subtitles` | ... | IIIF | +This table summarizes the known values available for use with the [Presentation API][prezi-api] `provides` property, which defines accessibility functionality that a linked resource enables for its target, describing why and how a client might use it rather than what the resource is by type or format. + +The definitions in this table are the definitions of the values for use with `provides`. Where a value originates in an external source, principally the [Accessibility Properties for Discoverability Vocabulary][schema-accessibility] published by the W3C Accessibility Discoverability Vocabulary for Schema.org Community Group, but also others, the Source column links to the original term for reference only; the definition given here takes precedence. Values with the source IIIF are defined by the IIIF Community. + +| Value | Definition | Source | +| ----- | ---------- | ------ | +| `closedCaptions`{: #closedCaptions} | Synchronized text of the dialogue together with descriptions of sound effects, relevant musical cues and other relevant audio information. Content that transcribes only the dialogue is `subtitles`. | Adapted from [W3C a11y-discov-vocab CG, §4.2.2.4](https://www.w3.org/community/reports/a11y-discov-vocab/CG-FINAL-vocabulary-20241209/#closedCaptions) | +| `alternativeText`{: #alternativeText} | Textual content to be provided to users that cannot or do not wish to interact with the image, audio or video file directly. | Adapted from [W3C a11y-discov-vocab CG, §4.2.2.1](https://www.w3.org/community/reports/a11y-discov-vocab/CG-FINAL-vocabulary-20241209/#alternativeText) | +| `audioDescription`{: #audioDescription} | Audio narration that describes the visual content of a video or image, for users who cannot see it. | Adapted from [W3C a11y-discov-vocab CG, §4.2.2.2](https://www.w3.org/community/reports/a11y-discov-vocab/CG-FINAL-vocabulary-20241209/#audioDescription) | +| `longDescription`{: #longDescription} | A textual representation of visual, auditory or complex structured data. | Adapted from [W3C a11y-discov-vocab CG, §4.2.2.6](https://www.w3.org/community/reports/a11y-discov-vocab/CG-FINAL-vocabulary-20241209/#longDescription) | +| `signLanguage`{: #signLanguage} | A sign language interpretation of audio or video content. | Adapted from [W3C a11y-discov-vocab CG, §4.2.2.8](https://www.w3.org/community/reports/a11y-discov-vocab/CG-FINAL-vocabulary-20241209/#signLanguage) | +| `highContrastAudio`{: #highContrastAudio} | An alternative form of the audio where the contrast is high, making it easier to hear. | Adapted from [W3C a11y-discov-vocab CG, §4.2.5.1](https://www.w3.org/community/reports/a11y-discov-vocab/CG-FINAL-vocabulary-20241209/#highContrastAudio) | +| `highContrastDisplay`{: #highContrastDisplay} | An alternative form of visual content where the contrast is high, making it easier to see. | Adapted from [W3C a11y-discov-vocab CG, §4.2.5.2](https://www.w3.org/community/reports/a11y-discov-vocab/CG-FINAL-vocabulary-20241209/#highContrastDisplay) | +| `braille`{: #braille} | A braille representation of the content. | Adapted from [W3C a11y-discov-vocab CG, §4.2.6.1](https://www.w3.org/community/reports/a11y-discov-vocab/CG-FINAL-vocabulary-20241209/#braille) | +| `tactileGraphic`{: #tactileGraphic} | A tactile graphic version of visual content, for users who read by touch. | Adapted from [W3C a11y-discov-vocab CG, §4.2.6.2](https://www.w3.org/community/reports/a11y-discov-vocab/CG-FINAL-vocabulary-20241209/#tactileGraphic) | +| `transcript`{: #transcript} | A text transcription of the content of the resource, which is not necessarily synchronized with it. | Adapted from [W3C a11y-discov-vocab CG, §4.2.2.9](https://www.w3.org/community/reports/a11y-discov-vocab/CG-FINAL-vocabulary-20241209/#transcript) | +| `translation`{: #translation} | A translation of the content into another language. | IIIF | +| `subtitles`{: #subtitles} | A transcription or translation of the dialogue only, synchronized with audio or video content. It does not include descriptions of sound effects, music or other non-speech audio; content that does is `closedCaptions`. | Adapted from [HTML Standard, `track` `kind` subtitles](https://html.spec.whatwg.org/multipage/media.html#attr-track-kind-subtitles) | {: .api-table} From 16d25a48156e1844a2e2d8331685465659b0d6c6 Mon Sep 17 00:00:00 2001 From: Dawn Childress Date: Wed, 4 Nov 2026 14:27:26 -0800 Subject: [PATCH 2/2] Add date to provides registry --- source/registry/accessibility/index.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/source/registry/accessibility/index.md b/source/registry/accessibility/index.md index 961415fe0..ecc59be7b 100644 --- a/source/registry/accessibility/index.md +++ b/source/registry/accessibility/index.md @@ -90,7 +90,7 @@ Thanks to the members of the [IIIF][iiif-community] for their continuous engagem | Date | Description | | ---------- | -------------------------------------------------- | -| 2026-XX-YY | New Version 4 Registries | +| 2026-11-04 | New Presentation 4 `provides` Properties | {% include acronyms.md %} {% include links.md %}