JSON Validator
Validate JSON against schemas, generate schemas from examples, and get detailed error reports with support for multiple schema drafts.
JSON Input
JSON Schema
💡 Tip: If you encounter schema reference errors, the validator automatically removes the $schema property during validation while maintaining the schema structure.
Validation Results
Enter JSON to see validation results...
About JSON Validation
What is JSON Validation?
JSON validation is the process of ensuring that JSON data follows a specific structure and meets defined criteria. It involves two types of validation:
- Syntax Validation: Ensures the JSON is well-formed and follows proper JSON syntax
- Schema Validation: Verifies that the JSON data structure matches a predefined JSON Schema
- Data Type Validation: Confirms that values are of the correct type (string, number, boolean, etc.)
- Business Rule Validation: Checks constraints like minimum values, required fields, and format requirements
JSON Schema Drafts
Supported Drafts
| Draft | Status |
|---|---|
| Draft-04 | Legacy (2013) |
| Draft-07 | Stable (2018) |
| 2019-09 | Modern (2019) |
| 2020-12 | Latest (2020) |
Key Features
- • Type validation (string, number, boolean, array, object)
- • Format validation (email, date-time, URI, etc.)
- • String length and pattern constraints
- • Numeric range and multipleOf validation
- • Array size and item validation
- • Required properties and additional properties
Common Use Cases
API Development
- Validate API request/response data
- Generate API documentation
- Ensure data consistency across services
Configuration Files
- Validate application configuration
- Ensure required settings are present
- Prevent configuration errors