JSON Schema Validator
Validate JSON payloads against drafts of JSON schemas. Fast, free, and fully client-side.
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How the JSON Schema Validator Works
Validates JSON payloads against a JSON Schema using `type`, `required`, `properties`, and `items` keywords, with path-level error reports.
Usage Example
Verify API contracts and configuration files against a basic JSON schema.
Frequently Asked Questions
Which schema keywords are checked?
`type`, `required`, `properties`, and `items` — this is a lightweight checker, not a full Draft-04/2020-12 spec-compliant validator (no `pattern`, `enum`, `$ref`, or numeric bounds yet).
Browse more
See all JSON tools.