JSON Schema Tester
Test schemas online. Write JSON rules and validate input data records against type restrictions, arrays limits, and required values.
Free JSON Schema Validator & Compliance Tester
JSON Schema Validator is an online utility designed to validate JSON data documents against standard draft schemas. Test structural rules, property data types, limits, and configurations with instant compliance validation powered by the industry-standard AJV validator.
Supports Draft-07 & Draft 2020-12
Validate objects against standard rulesets including type assertions, required keys, min/max numbers, string patterns, and nested schema references. Detailed compilation and parsing error reports highlight why validation failed.
Private and Secure Validation
Like all utilities on JSON-TOON, validation processing is fully secure and client-side. No configuration files, code payloads, or data instances are ever uploaded, keeping your data strictly confidential.