Developer Tools
JSON Schema Generator
Paste any JSON and instantly generate a JSON Schema (draft-07). Free, instant, no upload.
All properties are marked as required by default. Add additionalProperties: false to reject extra keys. Generated schema runs entirely in your browser.
How to Generate a JSON Schema from JSON (Free, In-Browser)
What JSON Schema draft-07 is, how to infer it from example JSON, required vs optional fields strategy, and how to use it for validation and OpenAPI.