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Warning: this Working Group is now closed. It has published its Recommendations and Working Group Notes on the 23rd of February 2017. For further discussions on the evolution of Web Annotation technologies at W3C, possible errata, etc, please join the W3C Open Annotation Community Group.

This Wiki is now frozen, and the mailing list deactivated (but the mailing list archives remain accessible)

Web Annotation Working Group

The mission of the Web Annotation Working Group, part of the Digital Publishing Activity, is to define a generic data model for annotations, and define the basic infrastructural elements to make it deployable in browsers and reading systems through suitable user interfaces.

Read the full charter and join the Working Group.


  • Mailing lists
    • All Working Group participants are automatically subscribed to the group's main discussion list public-annotation (public archive).
    • Comments from the public on the documents produced by the Working Group are welcome on the general public mailing list
    • Chairs of the group can be contacted through the team-annotation; the corresponding archives are confidential to the chairs and the W3C staff.
  • Meeting records of the Working Group are public

Main Working Group Deliverables

See the full charter for further details.

Logistics and Meetings

Minutes from past meetings are available as is logistics information for joining calls.


Implementation List

Published Documents

Specification Rec-track document Date Status Editors Current Editor's Draft W3C Shortname Draft Dated URL Notes
Web Annotation Data Model yes 23 February 2017 REC Robert Sanderson, Paolo Ciccarese, Benjamin Young
Web Annotation Vocabulary yes 23 February 2017 REC Robert Sanderson, Paolo Ciccarese, Benjamin Young
Web Annotation Protocol yes 23 February 2017 REC Robert Sanderson
Embedding Web Annotations in HTML no 23 February 2017 NOTE Timothy W. Cole, Sarven Capadisli, Benjamin Young, Ivan Herman
Selectors and States no 23 February 2017 NOTE Ivan Herman, Robert Sanderson, Paolo Ciccarese, Benjamin Young
FindText API n/a 15 October 2015 FPWD Doug Schepers Joint Deliverable with Web Platform WG; development stopped

Related Events Calendar

WG members attending related events are encouraged to share event details here, and where possible meet up with others from the WG for ad hoc collaboration. See also the W3C Events Calendar.

W3C Publishing Moratoria 2014/2015

  • 24 October 2014 - 3 November 2014 (TPAC)
  • 19 December - 5 January 2015

Roles and Work Mode

The purpose of the roles and work mode is to enable the working group to contructively achieve the goals outlined in the charter.

See Roles and Work Mode page for details.

W3C Working Group Resources

Patent Policy

This Working Group operates under the W3C Patent Policy (5 February 2004 Version). To promote the widest adoption of Web standards, W3C seeks to issue Recommendations that can be implemented, according to this policy, on a Royalty-Free basis.

For more information about disclosure obligations for this group, please see the W3C Patent Policy Status Page.


Email the chairs and staff contacts at