JSON Schema Validator
Validate JSON data against a JSON Schema and see every error instantly.
JSON Schema
JSON Data
Result
Enter a schema and data, then click Validate to see the result.
How to Validate JSON Against a Schema for Free
1. Paste your JSON Schema (Draft 2020-12) into the schema box.
2. Paste the JSON data you want to check into the data box.
3. Click Validate to see whether it matches, or every error found.
4. Fix your data or schema and re-run until it validates.
Runs in Your Browser
Your schema and data are validated entirely on your device using ajv — nothing is ever uploaded or sent to a server.