JSON to JSON Schema

Create a draft 2020-12 schema from one JSON example, including required properties, array item alternatives and primitive types.

01 Input

YOUR INPUT

02 Output

LOCAL RESULT

QUICK GUIDE / 02

How to use

Select Load example to restore the sample, or replace the labeled inputs with your own values.
Review the options and select Run tool. No input is sent to a server.
Use the generated schema as a starting contract and review its required fields.
Inspect the result, then copy or download it. Clear removes visible inputs and output.

A worked example

Load example restores these values.

Sample JSON:
{"name":"Ada","active":true}

Expected result

The schema has type object, required keys name and active, and string / boolean property types.

Scope & limitations

The sample cannot establish formats, numeric bounds, enums or business rules. Empty arrays produce an unrestricted items schema. JSON numbers use JavaScript binary64 precision; keep large exact identifiers as strings. Numeric overflow is rejected.

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JSON to JSON Schema

01 Input

02 Output

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