JSON Schema Generator
Paste any JSON and instantly get a valid JSON Schema Draft 7 with inferred types for all fields.
Schema will appear here
Paste JSON on the left and click Generate
All processing happens in your browser. Nothing is sent to a server.
- 100% free — no account needed
- Runs in your browser
- Nothing is uploaded
Frequently asked questions
Is JSON Schema Generator really free?
Yes. JSON Schema Generator is completely free on PureBrowser — every feature, with no account, no trial, and no credit card.
Does JSON Schema Generator upload my data?
No. JSON Schema Generator runs entirely inside your browser, so anything you type, paste, or open stays on your own device.
Do I need to sign up or install anything?
Neither. There is no account and nothing to download — open the page and JSON Schema Generator is ready to use on desktop or mobile.
Does JSON Schema Generator work offline?
Once the page has loaded, yes. All of the processing happens locally in your browser, so it keeps working without a connection.
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