Data type check (string, number, object, array, boolean, null)
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Validation of JSON against JSON Schema
Paste JSON data and a JSON Schema into the fields above, or choose an example to get started quickly.
Validate JSON data against a JSON Schema right in your browser. Check types, required fields, value ranges, regular expressions, and nested structures.
Data type check (string, number, object, array, boolean, null)
Validation of required fields (required)
Check ranges: minLength/maxLength, minimum/maximum
Support for enum, pattern (regex), additionalProperties
Validation of arrays with minItems/maxItems
Runs entirely in your browser, with no server requests
JSON Schema is a standard for describing the structure of JSON data. It lets you define field types, required properties, allowed values, and other constraints for validating JSON documents.