JSON Schema Validator

Validate JSON data against a JSON Schema definition.

JSON Schema
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JSON Data
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Frequently Asked Questions

What is JSON Schema?

JSON Schema is a vocabulary for annotating and validating JSON documents. It describes the structure, constraints, and documentation of JSON data.

Which JSON Schema features are supported?

This tool supports: type, properties, required, enum, const, minLength/maxLength, minimum/maximum, pattern, format (email, uri, date, etc.), minItems/maxItems, uniqueItems, oneOf, anyOf, allOf, not, and additionalProperties.

Is this validation done server-side?

No! All validation runs 100% in your browser. Your data never leaves your machine.