JSON Schema Generator

Generate JSON Schema from sample payloads without leaving the browser.

When you already have a representative JSON response, the fastest way to start a schema is inference. DataConvertor inspects nested objects, arrays, integers, booleans, nulls, and strings to produce a draft-07 style starter schema you can refine afterward.

Why schema generation is useful

Developers reach for a JSON Schema generator when API contracts are changing quickly, when documentation is incomplete, or when frontend and backend teams need a shared shape for validation. A generated schema is not the final contract, but it is often the fastest path to one.

Example

Sample JSON
{
  "id": 101,
  "name": "Ada",
  "active": true,
  "roles": ["admin"]
}

Generated Schema
{
  "type": "object",
  "properties": {
    "id": { "type": "integer" },
    "name": { "type": "string" },
    "active": { "type": "boolean" },
    "roles": {
      "type": "array",
      "items": { "type": "string" }
    }
  }
}

What DataConvertor generates

• Nested object properties with required field lists.
• Array item schemas merged from multiple elements.
• Primitive types like string, integer, number, boolean, and null.
• A draft-07 style schema file you can copy or download.