Other Tools
JSON Schema Validator
Validate JSON against JSON Schema online and pinpoint missing fields, type mismatches, and rule violations fast.
JSON Schema Validator
Use this validator to check whether a JSON payload matches a JSON Schema directly in the browser. It is useful for API debugging, config checks, and mock-data validation.
How To Use
- Paste a JSON Schema into the schema editor.
- Paste the JSON payload into the data editor.
- Run validation to inspect the result, error paths, and report.
Common Use Cases
- Validate API response contracts
- Check config files before deployment
- Verify frontend mock data against backend rules
- Debug
required,type,minimum, and array constraints
FAQ
Why is a field reported as missing?
Any property listed in required must exist in the JSON payload.
Why does the type fail validation?
If a field is declared as integer, string, array, or another type, the payload must match that exact type unless coercion is enabled.
What is the normalized output for?
When defaults or coercion are enabled, the output panel shows the processed JSON after validation so you can copy it directly.