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JSON Schema Generator
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JSON Schema Generator

Paste JSON data and get a valid JSON Schema (Draft 2020-12) automatically.

Overview

Free online JSON Schema generator. Paste JSON data and get a valid JSON Schema (Draft 2020-12) automatically. Supports nested objects, arrays, and required fields.

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Features

  • Draft 2020-12 compatible output
  • Nested objects and arrays inferred
  • Required field detection heuristics
  • Copy schema for OpenAPI and validators
  • Fast iteration from sample payloads
  • Clear formatting for review
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