JSON Schema Generator
Validate JSON against schemas and generate JSON Schema online. Define, validate, and test JSON data structures for API development
JSON Schema Validator FAQ and Usage Guide
What is JSON Schema?
JSON Schema is a standard way to define the structure of JSON data. It specifies data types, required fields, validation rules, and more to validate data integrity.
How to use this tool?
Simply input your JSON data and it will automatically analyze the structure to generate a JSON Schema. The generated Schema can be used for API documentation, data validation, TypeScript type generation, and more.
What's the difference between Draft 07 and Draft 04?
These are versions of JSON Schema. Draft 07 is the most widely used latest version and includes more features and improvements. We recommend using Draft 07 unless you have a specific reason not to.
Where can I use the generated Schema?
- API Documentation: Define request/response structure in OpenAPI/Swagger
- Data Validation: Validate JSON data on server or client side
- Type Generation: Auto-generate type definitions for TypeScript, Java, etc.
- Form Generation: Auto-generate forms with libraries like react-jsonschema-form
Is my data safe?
Yes! All Schema generation happens only in your browser. Your input JSON data is never sent to any server and is not stored anywhere.