JSON Schema is a vocabulary for annotating and validating JSON documents. It defines the structure, types, and constraints of JSON data.

Is draft-07 the latest version?

Draft-07 is the most widely supported version. Draft 2020-12 is newer but has less tooling support. Draft-07 works with most validators.

How do I use the generated schema?

Use it for API validation (ajv, joi), form generation, documentation, TypeScript type generation, or testing data contracts.

Developer Tool

Generate JSON Schema (draft-07) from sample JSON data. Auto-detects types, handles nested objects and arrays, and shows schema statistics.

100% free — no account needed

Sample JSON

Auto-generate JSON Schema from any JSON sample

Automatically detects string, number, integer, boolean, null, array, and object types.

Handles deeply nested objects and arrays with proper schema structure.

Generates schemas compliant with JSON Schema draft-07 specification.

See total properties, maximum nesting depth, and types found in your schema.

Developer Tools

JSON formatter, JSON path finder, JSON to CSV, and more.