Why Use JSON Schema?
While our standard JSON Validator ensures that your text is syntactically correct (no missing commas or quotes), it doesn't know what your data is supposed to look like.JSON Schema is a vocabulary that allows you to annotate and validate JSON documents.
This tool lets you define the required structure (the Schema on the right) and instantly test if a given API payload (the Data on the left) adheres to those strict rules. It supports Draft-04, Draft-06, Draft-07, and Draft 2020-12.
Common Schema Validations
| Rule | Example Schema Definition |
|---|---|
| Required Fields | "required": ["id", "email"] |
| Data Types & Limits | "age": { "type": "number", "minimum": 18 } |
| Specific Formats | "createdAt": { "type": "string", "format": "date-time" } |
| Enum (Allowed Values) | "status": { "enum": ["pending", "active"] } |
Related JSON Tools
Don't have a schema yet? Generate one with our JSON Schema Generator. For simple syntax validation, use the JSON Validator.