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Community & Business Groups

Accessibility Discoverability Vocabulary for Schema.org Community Group

The primary objective of this group is to maintain and develop the vocabularies for the accessibility discoverability properties in schema.org, that enable discovery of accessible content. This community group is a successor to the Accessibility Metadata Project that first proposed the properties, which were based on the Access for All metadata. The group may also propose additional properties in the future, if needed.

w3c/a11y-discov-vocab
Group's public email, repo and wiki activity over time

Note: Community Groups are proposed and run by the community. Although W3C hosts these conversations, the groups do not necessarily represent the views of the W3C Membership or staff.

Chairs, when logged in, may publish draft and final reports. Please see report requirements.

Welcome and work plan

This group represents a continuation of the Accessibility Metadata Project that was initiated by Benetech in 2013 to bring metadata for discovering the accessible properties of resources to the Web through schema.org. The original properties were based on the Access for All metadata from IMS Global, but some unique properties have subsequently been added.

When that project wrapped up, the Web Schemas wiki was used to maintain the vocabulary of terms, but that wiki page is no longer actively maintained. It’s taken a little while to find a formal way to reform the work, but this W3C Community Group will now be the official maintenance group for those vocabularies. This is in keeping with how other groups are maintaining their properties for schema.org.

The first order of business is to republish the vocabulary in the wiki as a Community Group document. Our intention is to publish the vocabulary out of the Community Group’s GitHub repository, as this will allow us to quickly address issues as they arise. The editor’s draft represents a straight-forward port of the old wiki. By publishing, we will get a stake in the ground before beginning to tackle the tracker issues. This will also allow us to formally retire the old wiki without delay.

Once we have a published document, we will begin to work at the issues in the tracker. We will be using GitHub to resolve issues as much as possible as it provides an open and easily discovered record of our discussions and decisions. We are not planning to hold regular teleconferences at this time but may schedule some if problems arise that we cannot solve by tracker alone.

We will try to republish the vocabulary with each issue we resolve.

For more information about the group, please also review the readme on the GitHub repository and the group’s charter document.

Call for Participation in Accessibility Discoverability Vocabulary for Schema.org Community Group

The Accessibility Discoverability Vocabulary for Schema.org Community Group has been launched:


The primary objective of this group is to maintain and develop the vocabularies for the accessibility discoverability properties in schema.org, that enable discovery of accessible content. This community group is a successor to the Accessibility Metadata Project that first proposed the properties, which were based on the Access for All metadata. The group may also propose additional properties in the future, if needed.


In order to join the group, you will need a W3C account. Please note, however, that W3C Membership is not required to join a Community Group.

This is a community initiative. This group was originally proposed on 2021-10-27 by Matt Garrish. The following people supported its creation: Matt Garrish, Ivan Herman, Avneesh Singh, Gregorio Pellegrino, Charles LaPierre. W3C’s hosting of this group does not imply endorsement of the activities.

The group must now choose a chair. Read more about how to get started in a new group and good practice for running a group.

We invite you to share news of this new group in social media and other channels.

If you believe that there is an issue with this group that requires the attention of the W3C staff, please email us at site-comments@w3.org

Thank you,
W3C Community Development Team