How do I generate a JSON Schema from JSON?
On the DevTools JSON Schema Generator page, paste sample JSON and click Generate. The output is a draft-07 Schema in JSON form.
JSON Schema Generator
DevTools JSON Schema Generator infers types from sample JSON and outputs a draft-07 Schema—all processed locally in your browser, free with no sign-up.
JSON input
About this tool
The tool infers string, number, integer, boolean, object, and array types from sample data. Object fields are included in required by default.
How to use
- Paste sample JSON.
- Click Generate Schema.
- Copy the Schema for documentation or validation.
FAQ
What if sample types are inconsistent?
The tool attempts to merge types; conflicts may fall back to string. Provide more consistent samples for better results.
Can I use the generated Schema in production as-is?
Review and add constraints such as enum, pattern, and minimum/maximum before using in production.
Is generation done locally?
Yes. Schema inference runs entirely in your browser.
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