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JSON Schema

JSON Schema Generator (JSON to Schema)

Automatically generate a JSON Schema (draft-07 or 2020-12) from any sample JSON document.

Runs entirely in your browser — your data never leaves your device.

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How to use this tool

  1. 1Paste a representative JSON sample into the editor.
  2. 2Choose the schema draft version.
  3. 3Copy the generated JSON Schema.

Frequently asked questions

Which drafts are supported?
The generator can output draft-07 and 2020-12 schemas, inferring types, required fields, and nested object structures.
Are required fields inferred?
Yes. Keys present in the sample are marked required; provide a representative example for best results.
Is my data uploaded to a server?
No. Every tool on JSONPost runs entirely in your browser using JavaScript. Your JSON never leaves your device, so it is safe to use with private or sensitive data.

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