Free, runs entirely in your browser — no sign-up, no file upload to a server.
What does JSON Schema Validator do?
It validates a JSON document against a JSON Schema, reporting exactly which fields fail validation.
How do I use it?
Paste both your JSON Schema and the JSON document to check — validation errors (if any) are listed with the failing path.
Is my input sent anywhere?
Everything runs in your browser — nothing you type or paste is sent to a server.
How do I report a problem or request a feature for this tool?
Use the Contact / Feedback page — select "JSON Schema Validator" as the related tool so we know exactly which tool you mean, then describe the bug or the feature you'd like to see.