JSON to OpenAPI

Convert JSON data to OpenAPI 3.0 Schema definitions with customizable schema names.

How to Use

  1. Paste your JSON data into the left input box.
  2. Optionally modify the schema name (default is Model).
  3. Click the "Convert" button to generate OpenAPI 3.0 Schema.
  4. Click "Copy Result" to copy the output to your clipboard.

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About JSON to OpenAPI

This tool helps you quickly convert JSON data to OpenAPI 3.0 Schema definitions. The OpenAPI specification (formerly known as Swagger) is the standard way to describe RESTful APIs, using JSON or YAML format to define API data structures, request parameters, and response formats. Writing OpenAPI schemas manually is time-consuming and error-prone. This tool automatically generates accurate schema definitions.

Simply paste JSON data and the tool will automatically analyze the JSON structure and generate corresponding OpenAPI 3.0 components/schemas definitions. Supports conversion of nested objects, arrays, strings, numbers, booleans, and other complex types to help you quickly build OpenAPI/Swagger documentation.