JSON to JSON Schema
Paste a JSON sample and get a JSON Schema (Draft 2020-12) back — inferred types, nested schemas, typed array items, required fields and additionalProperties. It all runs in your browser.
JSON Schema appears here.
Runs in your browser. Your input is not uploaded to PayloadIQ.
JSON to JSON Schema turns a sample into a Draft 2020-12 schema you can validate against. It infers a type for every value (integer vs number, boolean, string), gives nested objects their own schema, types array items, lists every present key under required, and sets additionalProperties: false for a strict contract. Everything runs locally in your browser, so a real payload never leaves your machine.
Strict by default, easy to relax
The generated schema is intentionally strict — required fields and no extra properties — because it's easier to loosen a schema than to discover it was too permissive in production. Drop fields from required or flip additionalProperties as your API actually behaves. Rename the schema with the Title field.
For validation and OpenAPI
The output works with validators like Ajv and adapts into an OpenAPI components/schemas entry. Prefer a runtime validator with TypeScript types instead? Generate a Zod schema from the same payload, or open it in the PayloadIQ playground.