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HTML derivatives

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The contents of this page, HTML derivatives, and all edits made to this page in its history, are hereby released under the CC0 Public Domain Dedication, as described in WHATWG Wiki:Copyrights.

This page documents specifications which have some past or present relationship to the WHATWG HTML Standard.


Work that once took place within the WHATWG HTML Standard but that now continues elsewhere.

Former section(s) Revision Date Current specification Notes
Determining the type of a resource r3234 2009-06-12 MIME Sniffing (WHATWG) Formerly known as "Content-Type Processing Model".
Parsing URLs, Resolving URLs r3245 2009-06-14 URL (WHATWG)
Internationalized Resource Identifiers (IRIs) (IETF)
innerHTML, outerHTML, insertAdjacentHTML() r6532 2011-09-04 DOM Parsing and Serialization (WHATWG)
Video conferencing and peer-to-peer communication r6837 2011-11-28 WebRTC (W3C) Sometimes referred to as "PeerConnection".
WebVTT r6837 2011-11-28 WebVTT (W3C) Formerly known as "WebSRT".
Editing APIs HTML Editing APIs (W3C)
UndoManager and DOM Transaction (W3C)
Origin The Web Origin Concept (IETF) RFC 6454
Database storage Web SQL Database (W3C) Abandoned in late 2010.
Web Sockets The WebSocket Protocol (IETF) RFC 6455
XMLHttpRequest XMLHttpRequest (WHATWG)
XMLHttpRequest (W3C)


Work that is being done in the WHATWG HTML Standard and then republished separately elsewhere.

Current section(s) Derivative specification Notes
Microdata HTML Microdata (W3C)
Web workers Web Workers (W3C)
Server-sent events Server-Sent Events (W3C)
Web sockets The WebSocket API (W3C)
Web storage Web Storage (W3C)


Work that has forked from the WHATWG HTML Standard and may differ significantly from that document.

Derivative specification Standards body Notes
HTML5 W3C Regularly takes patches from the WHATWG spec, but is not up to date and doesn't take all changes. See this document for an incomplete list of differences.