JSON Schema Generator
Paste a JSON example to auto-generate a JSON Schema (draft-07).
JSON Example
Generated Schema
About JSON Schema Generator
JSON Schema Generator takes a sample JSON document and automatically produces a JSON Schema (draft-07) that describes its structure. It infers types for all fields, handles nested objects and arrays, and marks required fields based on what's present in the sample.
JSON Schema is the standard way to validate, document, and auto-generate code for JSON APIs. Writing schemas by hand is tedious — this tool generates a solid starting point from a real example in seconds.
Use the generated schema with validators like Ajv, in OpenAPI spec definitions, or with form generators that read JSON Schema.
Features
- ✓Generates JSON Schema draft-07 from sample data
- ✓Infers string, number, boolean, object, and array types
- ✓Marks fields as required
- ✓Handles nested objects and array items
- ✓Output is ready for Ajv or OpenAPI specs
Common Use Cases
- →Generating validation schemas for API request bodies
- →Documenting JSON data structures for team APIs
- →Creating OpenAPI component schemas from example data
- →Bootstrapping form schemas for JSON Schema-based form libraries