JSON Schema Generator

Automatically infer schemas from your JSON data.

JSON Schema Generator

Paste any JSON and get a JSON Schema automatically generated from its structure.

JSON input

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "id": {
      "type": "number"
    },
    "name": {
      "type": "string"
    },
    "active": {
      "type": "boolean"
    },
    "tags": {
      "type": "array",
      "items": {
        "type": "string"
      }
    },
    "address": {
      "type": "object",
      "properties": {
        "city": {
          "type": "string"
        },
        "zip": {
          "type": "string"
        }
      },
      "required": [
        "city",
        "zip"
      ]
    }
  },
  "required": [
    "id",
    "name",
    "active",
    "tags",
    "address"
  ]
}

What is JSON Schema Generator?

Defining a JSON Schema manually is tedious and error-prone. Our generator analyzes your JSON structure and automatically creates a draft schema, inferring property types (string, number, boolean, object, array) and identifying required fields. It is an essential tool for API documentation and contract-driven development.

When to use JSON Schema Generator?

Generating baseline schemas for API documentation (OpenAPI/Swagger)

Validating data structure in integration tests

Creating documentation for complex data models

Standardizing data exchange formats between services

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