JSON Schema Generator
Generate JSON Schema from sample JSON data. Automatically detect types, formats, and create validation rules for your API.
Generated schema will appear here...
Generates JSON Schema Draft-07. Smart format detection identifies emails, URLs, UUIDs, and date-time values automatically.
Why Use JSON Schema Generator?
JSON Schema defines the structure and validation rules for JSON data. Instead of writing schemas manually, this tool automatically infers the schema from sample data, detecting types, formats, and nested structures to create comprehensive validation rules.
Frequently Asked Questions
What is JSON Schema used for?
JSON Schema is used to validate API requests and responses, document data structures, generate forms automatically, and ensure data quality in applications that process JSON data.
What formats are automatically detected?
The generator detects email addresses, URLs/URIs, UUIDs, date-time values (ISO 8601), and plain dates. These are marked with the appropriate format keyword in the schema.
Should I allow additional properties?
It depends on your use case. Disabling additional properties is stricter and catches typos in property names. Allowing them makes the schema more flexible for evolving data structures.