HTML 5.1

W3C Recommendation,

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

Errata for this document are recorded as issues.

The English version of this specification is the only normative version. Non-normative translations may also be available.


This specification defines the 5th major version, first 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/.

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 5.2.

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

The Working Group aims to produce an HTML 5.2 Recommendation in late 2017 that would obsolete this Recommendation.

This document was published by the Web Platform Working Group as a 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.

This document has been reviewed by W3C Members, by software developers, and by other W3C groups and interested parties, and is endorsed by the Director as a W3C Recommendation. It is a stable document and may be used as reference material or cited from another document. W3C's role in making the Recommendation is to draw attention to the specification and to promote its widespread deployment. This enhances the functionality and interoperability of the Web.

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 September 2015 W3C Process Document.