What a sample can tell you
Objects, arrays, numbers, booleans, and nested fields are visible in the payload itself. The generator turns those observable facts into a schema instead of making you type the structure from scratch.
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Generate a practical Draft-07 JSON Schema from sample JSON entirely in your browser.
Paste a representative JSON sample and turn its observed structure into a Draft-07 starting schema.
One sample can reveal types and structure, but it cannot prove which fields are optional or what values are valid in every case. Treat the result as a useful draft, then align it with the real contract.
Objects, arrays, numbers, booleans, and nested fields are visible in the payload itself. The generator turns those observable facts into a schema instead of making you type the structure from scratch.
A field appearing once does not prove that it is always required. That is why required-field inference is optional and why generated schemas still need a human review.
For `{ "age": 20, "email": "[email protected]" }`, the tool can infer `age` as an integer and `email` as a string with the `email` format. That already saves a fair amount of repetitive schema typing.