Developer
JSON Schema Generator
- Browser-based
- No signup
Browser-based
Paste sample JSON to infer a draft-07 JSON Schema with types, required fields, and nested object structure—runs entirely in your browser.
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 runs entirely in your browser.
Limitations
Processing runs in your browser when possible. Verify outputs before using them in production or official submissions.
Privacy and file handling
Your data is processed in your browser and is not uploaded to our server.
Frequently asked questions
Is the JSON Schema Generator free to use?
Yes. Utilnivo tools are free to use and do not require an account.
Are my inputs stored?
Utilnivo does not require an account. See the privacy note on this page for how your data is processed for this tool.
How do I get started with JSON Schema Generator?
Open the tool on this page, enter your inputs, and use the on-screen controls. No account is required.
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