JSON Schema Generator
JSON Schema Generator is a free online generator that helps you infer a JSON Schema (Draft-07) from any JSON document; nested objects and array element types are inferred recursively. JSON Schema Generator uses 2 input fields, returns 1 output value, and runs in your browser on the device.
Key facts
- Inputs
- 2 fields: JSON and All properties optional
- Outputs
- 1 value: JSON Schema
- Runtime
- your browser on the device
- Mode
- Generator
- Privacy
- Files and text stay in the browser session.
- Cost
- $0, no account required
How to use JSON Schema Generator
- 1
Paste or fill in the input
Enter your text or values into the input fields on the page.
- 2
Run the utility
Click Compute to run the utility in your browser and review the result.
- 3
Copy the output
Copy the output value you need from the result panel.
JSON Schema Generator details
First, enter JSON in JSON Schema Generator. Next, review JSON Schema. Additionally, JSON Schema Generator uses 2 input fields and 1 output block so the result is easy to scan and copy.
Paste any JSON object or array and generate a matching JSON Schema (Draft-07). Nested objects become inline `object` schemas with `properties` and `required`; arrays with mixed element types produce a `oneOf` union. All discovered object properties are marked required by default; flip the `All optional` switch to mark them optional instead. Useful for bootstrapping validation rules around an existing API response. Runs entirely in your browser; free, online, no upload.
Common searches
- json schema generator
- generate json schema
- json schema from json
- infer json schema
- draft-07 schema
- json schema
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Frequently asked
What is JSON Schema Generator?
JSON Schema Generator is a free online generator that helps you infer a JSON Schema (Draft-07) from any JSON document; nested objects and array element types are inferred recursively. JSON Schema Generator uses 2 input fields, returns 1 output value, and runs in your browser on the device.
What inputs and outputs does JSON Schema Generator use?
JSON Schema Generator uses 2 input fields: JSON and All properties optional. JSON Schema Generator returns 1 output value: JSON Schema.
Do my files and data stay private?
Yes. JSON Schema Generator runs entirely in your browser using your device's CPU. Files and text are never uploaded to our servers, so your data stays private.
How do I use JSON Schema Generator?
Open JSON Schema Generator, paste or fill in the input fields, and the result updates instantly. JSON Schema Generator runs in your browser with no upload and no waiting.
Which browsers does JSON Schema Generator support?
Any modern browser works in Chrome, Firefox, Safari, and Edge on desktop and mobile. JSON Schema Generator uses standard web APIs and does not require any plugin, extension, or sign-up.