JSON-LD

Overview

JSON-LD (JSON for Linked Data) is a W3C standard for embedding machine-readable metadata in JSON. On the web it is most often used with the schema.org vocabulary inside <script type="application/ld+json"> so search engines understand page content and may show rich results.

Principles: Valid JSON first; @context maps terms to IRIs; @type declares entity kind; prefer absolute URLs for @id and links; markup must match visible page content.

Reference: W3C JSON-LD 1.1 · schema.org · Google structured data intro

Minimal document

Every JSON-LD document needs @context and usually @type: