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Private on your device
Your information stays on your device and is not uploaded.
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Paste sample JSON to infer a draft-07 JSON Schema with types, required fields, and nested object structure—works on your device.
How to use this tool
Paste sample JSON, generate the schema, and copy the JSON Schema output for APIs or documentation.
Worked example
Example: a user object with name, age, and tags array produces a schema with string, integer, and array item types.
How it works
Paste sample JSON and the tool infers a draft-07 JSON Schema from the values it sees. Object keys become properties, primitives map to string, integer, number, boolean, or null, and arrays use the first element to infer items. Generation works on your device.
Limitations
Processing runs on your device when possible. Verify outputs before using them in production or official submissions.
Privacy and file handling
Your data stays on your device and is not uploaded.
FAQ
Frequently asked questions
Is JSON Schema Generator free?
Yes. It is free to use and you do not need to sign in or create an account.
Is my data private?
See the privacy note on this page. Many tools run on your device; some heavier file tools may use secure temporary processing when required.
Can I use JSON Schema Generator on mobile?
Yes. Open this page on your phone or tablet, enter your inputs, and use the on-screen controls.
Part of these workflows
This tool is one step in a longer job. Jump straight to your step or open the full workflow guide.
Related pages
- Validate JSON before deploy — step-by-step workflow
- Browse all free online tools on Utilnivo
- Explore more developer tools on Utilnivo
- JSON Formatter — Format, minify, and validate JSON with optional key sorting.
- JSON Validator — Validate JSON syntax and show parse errors.
- CSV to JSON Converter — Convert CSV with headers into a JSON array of objects.
- API Response Formatter — Pretty-print JSON or XML API responses with auto-detection.
- JSON to CSV Converter — Convert a JSON array of objects into CSV.
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