HTML 5.2

W3C Proposed Recommendation,

This version:
Latest published version:
Latest published version of HTML:
Previous version:
Editor's Draft:
(The Paciello Group)
(Invited Expert)
Former Editors:
(Apple Inc.)
Robin Berjon (W3C)
Test Suite:
Implementation Report:
File an issue (open issues)
Single page version


This specification defines the 5th major version, second minor revision of the core language of the World Wide Web: the Hypertext Markup Language (HTML). In this version, new features continue to be introduced to help Web application authors, new elements continue to be introduced based on research into prevailing authoring practices, and special attention continues to be given to defining clear conformance criteria for user agents in an effort to improve interoperability.

Status of this document

This section describes the status of this document at the time of its publication. Other documents may supersede this document. A list of current W3C publications and the latest revision of this technical report can be found in the W3C technical reports index at https://www.w3.org/TR/.

This document was published by the Web Platform Working Group as a Proposed Recommendation for HTML 5.2 that would obsolete the HTML 5.1 Recommendation. An HTML 5.1 Candidate Recommendation was published on 08 August 2017, and this document has incorporated feedback received on that draft. This document is intended to become a W3C Recommendation. Feedback and comments on this specification are welcome. Please use Github issues. Historical discussions can be found in the public-html@w3.org archives.

The W3C Membership and other interested parties are invited to review the document and provide feedback using Github issues through 30 November 2017. Advisory Committee Representatives should consult their WBS questionnaires. Note that substantive technical comments were expected during the Last Call review period that ended 5 September 2017. All comments are welcome.

Errata for this document are recorded as issues. The latest HTML editors' draft shows the current proposed resolution of errata in situ.

All interested parties are invited to provide implementation and bug reports and other comments through the Working Group's Issue tracker. These will generally be considered in the development of HTML 5.3.

The implementation report produced for this version demonstrates that in almost every case changes are matched by interoperable implementation.

Publication as a Proposed Recommendation does not imply endorsement by the W3C Membership. This is a draft document and may be updated, replaced or obsoleted by other documents at any time. It is inappropriate to cite this document as other than work in progress.

This document was produced by a group operating under the 5 February 2004 W3C Patent Policy. W3C maintains a public list of any patent disclosures made in connection with the deliverables of the group; that page also includes instructions for disclosing a patent. An individual who has actual knowledge of a patent which the individual believes contains Essential Claim(s) must disclose the information in accordance with section 6 of the W3C Patent Policy.

This document is governed by the 1 March 2017 W3C Process Document.