JSON Schema Generator
Generate JSON Schema from JSON data. Free online schema generator. Create validation schemas from samples.
About
JSON Schema validates structure, types, and constraints. Writing schemas by hand is slow. A schema generator infers a schema from sample JSON.
Paste one or more samples-API responses, configs-and get a JSON Schema. Use it for validation, documentation, or code generation.
Use cases: validating API contracts, documenting schemas, generating OpenAPI, onboarding. Paste data, get schema. Client-side only.
Example
Input
{"id":1,"name":"test","active":true}Output
{"type":"object","properties":{"id":{},"name":{},"active":{}}}Use cases
- Validate API contracts
- Document data structures
- Generate OpenAPI schemas
- Create validation rules