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JSON Type Inference

JSON to JSON Schema Generator

Instantly infer Draft-07 and Draft 2020-12 JSON Schemas from any raw JSON payload. Automatically detects emails, URIs, UUIDs, dates, and nested types. 100% private in browser.

Draft:
Input JSON Data
Valid JSON payload loaded
Inferred JSON Schema
{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://example.com/schema.json",
  "type": "object",
  "title": "UbifyAutoSchema",
  "properties": {
    "id": {
      "type": "string",
      "format": "uuid",
      "title": "id"
    },
    "username": {
      "type": "string",
      "title": "username"
    },
    "email": {
      "type": "string",
      "format": "email",
      "title": "email"
    },
    "age": {
      "type": "integer",
      "title": "age"
    },
    "isActive": {
      "type": "boolean",
      "title": "isActive"
    },
    "website": {
      "type": "string",
      "format": "uri",
      "title": "website"
    },
    "tags": {
      "type": "array",
      "title": "tags",
      "items": {
        "type": "string",
        "title": "Item"
      }
    },
    "address": {
      "type": "object",
      "title": "address",
      "properties": {
        "street": {
          "type": "string",
          "title": "street"
        },
        "city": {
          "type": "string",
          "title": "city"
        },
        "zipCode": {
          "type": "integer",
          "title": "zipCode"
        }
      },
      "required": [
        "street",
        "city",
        "zipCode"
      ]
    }
  },
  "required": [
    "id",
    "username",
    "email",
    "age",
    "isActive",
    "website",
    "tags",
    "address"
  ]
}
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Contract-Driven API Development with JSON Schema

JSON Schema is an open standard for annotating and validating JSON documents. By deriving contract definitions directly from representative mock responses or database entities, engineering teams can implement contract testing in OpenAPI (Swagger), Fastify, Ajv, or Pydantic without manually authoring hundreds of lines of schema definitions.

Format Detection

Automatically identifies semantic strings conforming to RFC 5322 (email), RFC 3986 (URI), RFC 4122 (UUID v4), ISO-8601 (date-time), and IPv4 patterns.

Draft-07 & 2020-12 Support

Toggle between legacy Draft-07 (widely supported in enterprise tooling and AWS API Gateway) and modern Draft 2020-12 specifications.

Zero External Transmission

Validates and constructs schemas entirely in your local browser sandbox, protecting user personally identifiable information (PII) and production payloads.

Ubify Core Engineering Team

SOFTWARE ENGINEERS & SYSTEMS ARCHITECTS

~4 min read
~760 words
VERIFIED OCTOBER 2026
Verified for W3C & ECMA-404 Standard Compliance