JSON Schema Validator
newValidate JSON data against a JSON Schema and see every violation.
100% Client-Side Processing • Your Data Never Leaves Your Browser
About JSON Schema Validator
Paste a JSON document and a JSON Schema to check whether the data satisfies it — required fields, types, string/number ranges, and enum/const values are all checked, with each violation reported against its JSON path.
Use it to validate an API payload against its contract, or check a config file against a schema before deploying. All validation runs locally in your browser.
Key Features
type, enum, const, required, and properties checks
String/number constraints: pattern, min/maxLength, minimum/maximum
Array constraints and oneOf/anyOf/allOf combinators
Per-field error list with JSON paths
Frequently Asked Questions
Does it support the full JSON Schema spec?
It covers the most commonly used keywords (type, properties, required, enum, pattern, combinators) but not $ref, format, or if/then/else.
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