JSON Schema Validator - Validate JSON Against a Schema
Validate JSON data against a JSON Schema to confirm required fields, types, and constraints. Great for API payload checks, form validation rules, and contract testing.
Why use JSON Schema validation?
- Catch errors early: verify payloads before sending.
- Clear rules: schemas document your data shape.
- Better APIs: consistent validation across services.
- Safer refactors: prevent accidental breaking changes.
Field guide
- Schema: a JSON Schema object (Draft compatible).
- Data: the JSON you want to validate.
- Output: a readable summary and any errors.