First Public Working Draft: YAML-LD 1.0

YAML-LD 1.0

https://www.w3.org/TR/2026/WD-yaml-ld-10-20260305/

Published by
 JSON-LD Working Group

Abstract

[JSON-LD11] is a JSON-based format to serialize Linked Data. In recent years, [YAML] has emerged as a more concise format to represent information that had previously been serialized as [JSON], including API specifications, data schemas, and Linked Data. 

This document defines YAML-LD as a set of conventions on top of YAML which specify how to serialize Linked Data [LINKED-DATA] as [YAML] based on JSON-LD syntax, semantics, and APIs. 

Since YAML is more expressive than JSON, both in the available data types and in the document structure (see [RFC9512]), this document identifies constraints on YAML such that any YAML-LD document can be represented in JSON-LD.

Status of the Document

This section describes the status of this document at the time of its publication. A list of current W3C publications and the latest revision of this technical report can be found in the W3C standards and drafts index. 

This specification was initially developed by the JSON-LD Community Group. 

This document was published by the JSON-LD Working Group as a First Public Working Draft using the Recommendation track.

Publication as a First Public Working Draft does not imply endorsement by W3C and its Members.

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 a work in progress.

This document was produced by a group operating under the 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 that 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 18 August 2025 W3C Process Document.

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Received on Thursday, 5 March 2026 07:07:55 UTC