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JSON Schema Generator

Use JSON Schema Generator entirely in your browser, with no upload, no sign-up, and no data leaving your device. Runs entirely in your browser with no upload.

🔒 This tool runs entirely in your browser. Your files are never uploaded to a server.

schema inference board

JSON Schema Generator

Infer property rows and required-field hints from sample JSON.

How it works

  1. Start with the polished sample already loaded in the widget.
  2. Adjust the input and settings for your real scenario.
  3. Review the live result, then download the summary when useful.

FAQ

Does this run in my browser?

Yes. JSON Schema Generator works locally in the page with no backend upload or account.

Can I use the sample data?

Yes. The widget loads with a realistic sample so you can see the workflow before replacing it.

Can I save the output?

Yes. Use the download control to save a plain-text summary of the current result.

How we compare

FeatureOnline Tool StoreManual spreadsheetOne-off notes
Live browser feedbackIncludedRequires formulasManual
Sample visible on loadIncludedUsually blankManual
Private local workflowYesDepends on setupYes

Use this tool when you want a focused, browser-only workflow instead of rebuilding the same checks by hand.

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Paste this on your own site — it stays free, and every file still stays in your visitor's browser, not yours or ours.