Josh Liljenquist

Private, browser-local utility

Schema Markup Generator

Create bounded JSON-LD for Article, Person, Organization, or WebSite with safe serialization.

Structured data is generated locally and never fetched, tested remotely, or published.

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Supported schemas and safety

V1 provides focused field sets for Article, Person, Organization, and WebSite. Only fields collected for the selected type are emitted. URLs are credential-free HTTP(S), dates use an ISO date/date-time shape, and sameAs is capped at 20 URLs.

Output uses JSON.stringify from a structured object. Less-than signs are escaped in the copyable script block so entered text cannot terminate the JSON-LD script. This tool provides syntactic assistance, not eligibility, validation, publication, ranking, or rich-result guarantees.