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Welcome to Mozilla's standards participation page.

This is a directory of standards organizations and their working groups, listing who at Mozilla is working with each.

For a technology summary see the technologies page, for Mozilla’s positions on particular specifications, see:

Current discussions of Mozilla positions:

The lists below are organized alphabetically by standards body and working group (if any), with Mozilla participants and specifications they edit/author/contribute to.

If you’re a Mozillian actively & directly participating in a standards body (working group email list, IRC, wiki, and/or f2f meetings), please add yourself to the specific standards body / working group if any), linking to your wiki User: page. If you’re working in multiple working groups or standards organizations, add yourself to each.



Web Standards Coordination

General Participation Guidelines

If you'd like to participate in some of these groups, or at least watch, learn, get up to speed, you can almost always do so by lurking on the public IRC channels and mailing lists that the groups use. Many (most?) standards mailing lists can often be overwhelming in quantity, depth so start with IRC as that's often lighter-weight and easier to watch for quick bits of info/knowledge.

  • Follow the instructions on the Matrix wiki page to:
    • Set up a connection to and nickname for
    • Join the Standards channel
  • Follow the instructions on the IRC wiki page to:
    • Set up a connection to and nickname for but specifically port 6665 (unprotected, no nickname registration).
    • Set up a connection to and nickname for for participation in #whatwg and other standards communities (#microformats, #indieweb)
  • See each standards section below for which IRC channel(s) tend(s) to be used by folks working in each group.

Ecma International


Specifications: ECMAScript 5, 5.1, 6, Harmony, etc.


ISOC Advisory Council

Internet Architecture Board (IAB)

  • Martin Thomson

Internet Engineering Steering Group (IESG)

  • Adam Roach (Applications and Real-Time Area)
  • Eric Rescorla (Security Area)

CALEXT (iCalendar)

  • Philipp Kewisch



No current Mozilla participants.

DNS over HTTPS (DoH)

  • Martin Thomson


  • Martin Thomson
  • Dragana Damjanovic


  • Adam Roach (:abr) - WG Chair
  • Timothy B. Terriberry (:derf)
  • Jean-Marc Valin (:jmspeex)
  • Nathan Egge

CODEC (Opus)

  • Jean-Marc Valin (:jmspeex)
  • Tim Terriberry (:derf)


  • Martin Thomson
  • Eric Rescorla


  • Randell Jesup
  • Tim Terriberry
  • Adam Roach (:abr)
  • Eric Rescorla (EKR)
  • Martin Thomson
  • Maire Reavy


  • Eric Rescorla


  • Eric Rescorla


  • Martin Thomson
  • Eric Rescorla


  • Martin Thomson



  • Jeff Gilbert (:jgilbert)

microformats and microformats wiki

Community participants:


  • hCard - implemented in Firefox DOM
  • hCalendar - implemented in Firefox DOM
  • ... and many others.




The W3C (World Wide Web Consortium) has Working Groups (WGs), Interest Groups (IGs), and Community Groups (CGs). See below for details and please add any/all of such groups here in alphabetical order by working group name.

For the sake of focus and brevity, only W3C WGs are listed here inline, along with any complementary IGs or CGs that are paired with them.

For other W3C IGs or CGs not tied directly to an active WG, see:

Advisory Board

W3C Advisory Board (AB) — elected members

The AB drives W3C process improvements in:

Process Community Group

W3C Process Community Group publicly discusses (wiki, GitHub repo, list), proposes, and makes changes to the W3C Process. Delegated authority from the AB (some members of which overlap with the CG), which retains overall (dis)approval of W3C Process iterations before proposing to the AC.

Advisory Committee

See Advisory Committee Representative Directory for who else is an AC Rep from which companies.

Audio Working Group


  • Matthew Gregan
  • Paul Adenot (Spec Editor)
  • Ehsan Akhgari

The Audio Working Group works in conjuction with the Audio Community Group:

Audio Community Group

Browser Testing and Tools Working Group

Browser Testing and Tools Working Group homepage, Charter, Mailing list, Mailing list archive


  • WebDriver - APIs for remote controlling web browsers
  • (link?) APIs for use in debugging of web applications

CSS Working Group

Cascading Style Sheets Working Group (CSSWG), members, irc, email list

  • Looking for where we prioritize our CSS development? See: CSS:Priorities

Working group members participating on behalf of Mozilla (also on w3c-css-wg)

Additional www-style list participants related to Mozilla (anyone is welcome to join)


For more details see: CSS

Internationalization Working Group

Internationalization Working Group (members), part of Internationalization Activity (i18n)

Pointer Events Working Group

Pointer Events Working Group home page (members). Participants:

  • Olli Pettay
  • Matt Brubeck

Second Screen Working Group

No current Mozilla participants.

SVG Working Group

SVG (Scalable Vector Graphics) Working Group, charter expired and WG in-limbo, members

  • Cameron McCormack (co-chair)
  • Jonathan Watt

Specifications: SVG 1.1, SVG 2.0

Tracking Protection Working Group

  • Heather West

Technical Architecture Group


Web Applications Security Working Group

  • Eric Rescorla
  • Daniel Veditz
  • Tanvi Vyas
  • Frederik Braun

Specifications: CSP, HSTS Priming, SRI

Web Applications Working Group

WebApps WG home page — (members)

Related incubator group: Web Platform Incubator Community Group

WebAssembly Working Group


WebAssembly Community Group (members)

  • Luke Wagner
  • Dan Gohman
  • Benjamin Bouvier
  • Lin Clark
  • Till Schneidereit

Web Fonts Working Group

Web Fonts Working Group homepage (members)

  • Jonathan Kew (editor)

Web Payments Working Group

Web Payments Working Group homepage (members)

Web Payments Task Force

Web Performance Working Group

  • Benjamin De Kosnik
  • Sean Feng

Specifications: Navigation Timing, Paint Timing, Event Timing, Element Timing

  • Olli Pettay

Specifications: DOM-adjacent

  • Cameron McCormack
  • Panos Astithas

Specifications: Timing control for script-based animations (requestAnimationFrame)

WebRTC Working Group

WebRTC (Web Real Time Communications) Working Group

  • Maire Reavy
  • Eric Rescorla (EKR)
  • Tim Terriberry
  • Adam Roach (:abr)
  • Randell Jesup (:jesup)

Specifications: Media capture & streaming APIs

Specifications: Media Capture Stream with Worker Extensions mediacapture-worker APIs


Web Hypertext Application Technology Working Group -


Alliance for Open Media

The Alliance for Open Media develops next-generation media formats, codecs, and technologies. See also #NETVC.

  • Timothy B. Terriberry (:derf)

CA/Browser Forum

The CA/Browser Forum produces standards in the area of best practice and validation for certificate authorities.

  • Kathleen Wilson


Mozilla is a member of CalConnect, The Calendaring and Scheduling Consortium, which is not actually affiliated w/ IETF or W3C but in practice drives development and interoperability testing of IETF specs:

See their Index to Calendaring and Scheduling Standards for other specific standards that CalConnect is involved with.


  • No current Mozilla point of contact


Mozilla is not formally associated with the XSF but has representation indirectly.

  • no direct involvement by any current Mozillian


C++ is standardized by ISO/IEC JTC1/SC22/WG21 (informally, the "C++ Standards Committee"). All proposals are publically available here.

Botond Ballo is a member of Canada's delegation to the Committee, and has been attending meetings regularly since September 2013. If you have any feedback about any existing proposal, or would like to explore the idea of putting forth a new proposal, please post to dev-platform and cc Botond.

Orgless specs


Main article: Standards/emeritus

See: Standards/emeritus for lists of former Mozillians who worked on standards, and former standards groups or organizations.

subpages of Standards

See Also