What JSON Schema version is generated?

The tool generates JSON Schema draft-07, which is widely supported and compatible with most JSON validation libraries.

Can I use multiple sample JSON documents?

Yes, you can paste multiple JSON documents (one per line) and the tool will infer a schema that covers all variations in your samples.

JSON Schema is commonly used for API contracts, form validation, configuration file validation, documentation, and code generation.

Paste sample JSON and generate a JSON Schema for API contracts, validation rules, and documentation. Processing stays in your browser.

Paste JSON or upload a .json file. You can also paste multiple JSON documents (one per line).

upload_file Upload

Schema title Draft Include required additionalProperties Detect string formats Enum threshold

Copy or download your schema.

Tip: For best schemas, paste multiple representative samples (one JSON per line).