{}?JSON Schema Generator
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JSON Schema is a standard for describing the structure and validation rules of JSON data. It is widely used for API documentation, input validation, and code generation. This tool analyzes your JSON data and automatically generates the corresponding schema.
How to Use
- 1Enter JSON
Paste your JSON data into the left input area. Click 'Load Example' to try a sample.
- 2Configure options
Choose the Draft version (2020-12, 2019-09, Draft 07), and toggle required fields, additionalProperties, and format detection (email, date, uri, etc.).
- 3Review and copy
The generated JSON Schema appears on the right. Copy it to clipboard or download it as a file.
Tips
- 💡When an array contains multiple objects, common keys are marked as required and keys present only in some objects become optional.
- 💡Enable format detection to automatically recognize email, date, date-time, uri, and uuid string formats.
- 💡Disabling additionalProperties allows fields not defined in the schema to pass validation.
- 💡The generated schema works directly with validation libraries like ajv, zod, and Pydantic.