Validate JSON against a JSON Schema — Draft-07, 2019-09, or 2020-12, auto-detected from your schema's $schemafield. Paste data and a schema (or infer one from sample JSON with one click) and get every error explained in plain language with the exact path to the failing field, not a raw Ajv dump. Save schemas you use often, and there's a built-in regex tester for pattern fields. All validation runs in your browser — nothing is ever uploaded.
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Paste JSON data and a schema on the left, or load a sample to see validation in action.