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Generate a JSON schema from JSON

Paste one instance (or an array of samples) and get a JSON Schema for it. Required threshold, nullability, examples, tuple arrays, and integer-vs-number are explicit controls, and the generated schema is re-validated against your instance before it is shown.
2020-122019-09draft-07Required atpresenceExamplesTuple arraysInfer formatsCopyDownloadPaste, drop, or type to begin. Everything stays on this device.

More JSON tools

- JSON schema validator (/json/schema)
- JSON to code (/json/codegen)
- JSON validator (/json/validator)
All JSON tools (/json)

Canonical HTML: https://nutter.tools/json/schema-generator/
Markdown version: https://nutter.tools/json/schema-generator/index.md
Plain-text version: https://nutter.tools/json/schema-generator/index.txt
Agent index: https://nutter.tools/llms.txt