The Wayback Machine - https://web.archive.org/web/20190409170312/https://w3c.github.io/html-extensions/
W3C Recommendations that extend HTML
Markup languages such as HTML and SVG provide a style attribute on most elements,
to hold inline style information that applies to those elements.
This draft describes the syntax and interpretation of the CSS fragment
that can be used in such style attributes. [[css-style-attr]]
This specification defines a longdesc attribute (based on the longdesc attribute of
HTML 4) to link descriptions to images in HTML content. [[html-longdesc]]
This specification defines
The various its-* attributes
its-allowed-charactersits-line-break-typeits-loc-noteits-loc-note-refits-loc-note-typeits-loc-quality-issue-commentits-loc-quality-issue-enabledits-loc-quality-issue-profile-refits-loc-quality-issue-severityits-loc-quality-issue-typeits-loc-quality-issues-refits-loc-quality-rating-profile-refits-loc-quality-rating-scoreits-loc-quality-rating-score-thresholdits-loc-quality-rating-voteits-loc-quality-rating-vote-thresholdits-locale-filter-listits-mt-confidenceits-orgits-org-refits-personits-person-refits-prov-refits-provenance-records-refits-rev-orgits-rev-org-refits-rev-personits-rev-person-refits-rev-toolits-rev-tool-refits-storage-encodingits-storage-sizeits-ta-class-refits-ta-confidenceits-ta-identits-ta-ident-refits-ta-sourceits-termits-term-confidenceits-term-info-refits-toolits-tool-refits-within-text
to support automated creation and processing of multilingual Web content. [[its20]]
This specification defines a unified event model to handle mouse, touch and stylus input.
It builds on mouse events, and extends the Element, GlobalEventHandlers
and Navigator interfaces of HTML. [[pointerevents]]
RDFa comprises a family of specifications which specify attributes for XML, SGML, and HTML-style markup languages,
and a processing model that can reliably parse RDFa information to produce RDF
- [[RDFA-PRIMER]]
- An overview of the RDFa family of specifications
- [[RDFA-CORE]]
- Formal processing and syntax rules for RDFa
- [[HTML-RDFA]]
- HTML-specific rules and syntax for RDFa
- [[XHTML-RDFA]]
- XHTML-specific rules and syntax for RDFa
- [[RDFA-LITE]]
- A minimal subset of RDFa, of similar size to [[microdata]]
This specification defines a mechanism by which user agents may verify that a fetched resource
has been delivered without unexpected manipulation. It adds the integrity attribute
for link elements whose rel attribute value inclues stylsheet,
and for script elements, and extends the HTMLLinkElement and
HTMLScriptElement interfaces. [[SRI]]
This specification defines a mechanism to notify a URL that it has been mentioned.
It adds the webmention value for the rel attribute of links. [[webmention]]
W3C Working Drafts that extend HTML
This specification defines conformance requirements for the use of the
role and
The various aria-* attributes
aria-activedescendantaria-atomicaria-autocompletearia-busy (state)aria-checked (state)aria-controlsaria-currentaria-describedbyaria-disabled (state)aria-dropeffectaria-expanded (state)aria-flowtoaria-grabbed (state)aria-haspopuparia-hidden (state)aria-invalid (state)aria-keyshortcutsaria-labelaria-labelledbyaria-levelaria-livearia-modalaria-multilinearia-multiselectablearia-orientationaria-ownsaria-placeholderaria-posinsetaria-pressed (state)aria-selected.aria-readonlyaria-relevantaria-requiredaria-selected (state)aria-pressed.aria-setsizearia-sortaria-valuemaxaria-valueminaria-valuenowaria-valuetext
from [[wai-aria-1.1]] on HTML elements. [[html-aria]]
Beacon API extends the Navigator interface, adding a sendBeacon method
to send a simple message to analytics and similar services. [[beacon]]
This document defines a mechanism by to control the resources a particular page can fetch or execute,
as well as a number of security-relevant policy decisions.
It introduces an HTTP header Content-Security-Policy which can be used as a value for
the meta element's http-equiv attribute, along with parameters to be used in
the corresponding content attribute, that effect navigation and the use of resources
external to the page. [[CSP3]]
The HTML Media Capture specification defines an HTML form extension that
facilitates user access to a device's media capture mechanism, such as a camera, or microphone,
from within a file upload control. [[html-media-capture]]
This specification defines several global attributes for HTML, to add machine-parseable semantics
to HTML content, in a similar way to RDFa but with less power and expressivity. [[microdata]]
This specification defines a preload keyword as a value of the rel attribute
for links. The keyword provides a declarative fetch primitive that initiates an early fetch
and separates fetching from resource execution. [[preload]]
This specification defines an API to enable web content to access external presentation-type displays
and use them for presenting web content. It extends the Navigator interface. [[presentation-api]]
Merging the content of this specification directly into HTML is now tracked as
HTML Issue #259.
This document adds the additional public identifier
-//W3C//ENTITIES HTML MathML Set//EN//XML for XHTML user agents,
and causes the HTML character entity definitions to be loaded by explicitly referencing
the set of definitions that is used by HTML. [[xhtml-pubid]]
This document describes how an author can set a referrer policy for documents they create,
and the impact of such a policy on the Referer HTTP header for outgoing requests and navigations. [[referrer-policy]]
This specification defines the dns-prefetch, preconnect, prefetch,
and prerender values of the rel attribute for links
(<link>).
These primitives enable the developer, and the server generating or delivering the resources,
to assist the user agent decide which origins it should connect to,
and which resources it should fetch and preprocess to improve page performance. [[resource-hints]]
Acknowledgements
Thanks are due to the various editors of specifications mentioned here, and to the editors past and present of HTML. In addition, the editors would like to thank the following for specific contributions to this document:
Ade Bateman,
Eric Prud'hommeaux,
Matt Garrish,
Paul Cotton
