JSON Schema Generator
Generate JSON Schema from any JSON object with type detection and format inference.
JSON Schema Generator
Generate JSON Schema Draft 7 / 2019-09 / 2020-12 from JSON
{ "$schema": "http://json-schema.org/draft-07/schema#", "type": "object", "properties": { "id": { "type": "integer" }, "uuid": { "type": "string", "format": "uuid" }, "username": { "type": "string" }, "email": { "type": "string", "format": "email" }, "website": { "type": "string", "format": "uri" }, "birthdate": { "type": "string", "format": "date" }, "createdAt": { "type": "string", "format": "date-time" }, "isActive": { "type": "boolean" }, "score": { "type": "number" }, "tags": { "type": "array", "items": { "type": "string" } }, "address": { "type": "object", "properties": { "street": { "type": "string" }, "city": { "type": "string" }, "zip": { "type": "string" }, "country": { "type": "string" } }, "required": [ "street", "city", "zip", "country" ] }, "preferences": { "type": "object", "properties": { "theme": { "type": "string" }, "notifications": { "type": "boolean" }, "language": { "type": "string" } }, "required": [ "theme", "notifications", "language" ] }, "roles": { "type": "array", "items": { "type": "string" } }, "lastLogin": { "type": "null" } }, "required": [ "id", "uuid", "username", "email", "website", "birthdate", "createdAt", "isActive", "score", "tags", "address", "preferences", "roles" ] }
JSON Schema Generator का उपयोग कैसे करें
- 1
Paste your JSON object into the input textarea on the left side.
- 2
The tool validates your JSON in real time and highlights any syntax errors.
- 3
Choose a schema version: Draft 7, Draft 2019-09, or Draft 2020-12.
- 4
Toggle options like "Mark all properties required" or "No additional properties" to customize the schema.
- 5
Enable "Add title/description fields" to include metadata fields in the generated schema.
- 6
The JSON Schema is generated instantly and displayed in the output panel on the right.
- 7
Click "Copy Schema" to copy the full JSON Schema to your clipboard.
- 8
Click "Download .json" to save the schema as a JSON file for use in your project.
JSON Schema Generator के बारे में
Need a JSON Schema for your API or validation pipeline? The JSON Schema Generator automatically creates a complete, standards-compliant schema from any JSON object — with smart type inference, format detection, and support for Draft 7, 2019-09, and 2020-12.
Why Use This Tool?
Writing JSON Schema by hand is tedious and error-prone, especially for deeply nested objects. This tool analyzes your JSON structure recursively, detects string formats (email, URI, date, date-time, UUID), distinguishes integers from numbers, and handles heterogeneous arrays — all in real time as you paste your data.
Key Features
- Three Schema Versions: Draft 7 (most widely used), Draft 2019-09, and Draft 2020-12
- Smart Format Detection: Emails, URIs, dates, date-times, and UUIDs are automatically tagged
- Customizable Output: Toggle required properties, additionalProperties, and title/description fields
- Copy & Download: One-click copy or download the schema as a .json file
- Syntax Highlighting: Color-coded output for easy reading
Compatible With Popular Validators
The generated schema works with ajv, Zod (via json-schema-to-zod), Pydantic, and all major JSON Schema validators. Use it for OpenAPI specs, form validation, or data pipeline contracts.
All processing happens in your browser — your data never leaves your device.