JSON Schema Generator (from JSON)
Developer ToolsCreate a JSON Schema from sample JSON
Embed this tool on your websiteFree
- Choose how tall the frame should be.
- Press Copy code.
- Paste it into your page, blog, WordPress or Notion HTML block.
The tool runs inside your visitor's browser, nothing is uploaded, and a small "Powered by ToolCloak" line stays under it. The second line (script) is optional: it makes the frame fit the tool's height.
Similar tools you may like
History
All history →JSON Schema Generator (from JSON) — at a glance
Turn a sample JSON into a schema you can use for validation.
How to use it — step by step
A valid JSON example.
Paste JSON
One example object or array.
Pick options
Required keys, formats and draft.
Generate
The schema appears below.
Copy
Use it in your validator or API docs.
Pro tips
Small things that make the result better.
Quick facts
Frequently Asked Questions
Is the schema perfect?+
It is a good starting point. Review it, especially required fields and number ranges.
What formats are detected?+
Email, date, date-time, uri and uuid.
Is my JSON uploaded?+
No.
Is my data safe?+
Yes. Everything runs inside your own browser. Your text, files and images are never uploaded to any server.
Is this tool really free?+
Yes — completely free, no signup, no watermark and no usage limit.