JSON SchemaValidator
Validate JSON data against JSON Schema definitions with comprehensive error reporting. Free • Instant • Professional quality
JSON Data
Drag & drop JSON data file here
or paste directly below
JSON Schema
Drag & drop JSON schema file here
or paste directly below
Validation Features
Everything you need for comprehensive JSON Schema validation.
JSON Schema Validation
Validate JSON data against JSON Schema definitions with comprehensive error reporting
Flexible Validation
Support for draft-07 schema specifications with customizable validation rules
Detailed Error Reports
Get specific validation errors with path information and clear explanations
File Upload Support
Upload JSON data and schema files directly for validation
Validation Capabilities
Advanced validation features for comprehensive data checking.
Type Validation
Comprehensive type checking for all JSON data types
- String validation
- Number constraints
- Boolean checking
- Null handling
Structure Validation
Validate object and array structures
- Required properties
- Property counts
- Array lengths
- Nested validation
Format Validation
Special format validations for common data types
- Email format
- URI validation
- Date formats
- Custom patterns
Perfect For
Discover the many applications of JSON Schema validation.
Validate API request/response data against schemas
Ensure configuration files conform to specifications
Check data integrity in data processing pipelines
Validate form submissions against expected formats
Test JSON data before importing into databases
Verify data contracts between microservices
Why Use JSON Schema Validation?
JSON Schema validation ensures data quality and consistency across your applications. By defining clear data contracts, you can catch errors early, improve API reliability, and maintain data integrity throughout your development and production environments.
Frequently Asked Questions
What JSON Schema draft versions are supported?
The validator supports JSON Schema Draft-07 specifications, which covers most common validation needs including type validation, format checking, and structural constraints.
How detailed are the validation error messages?
Error messages include the exact path to the invalid data, the type of validation that failed, and a clear description of what was expected versus what was found.
Can I validate nested objects and arrays?
Yes, the validator recursively validates all nested structures, arrays, and complex object hierarchies according to your schema definitions.
What happens with additional properties not defined in the schema?
You can configure whether additional properties are allowed or rejected. By default, additional properties are permitted unless explicitly restricted in the schema.
Is the validation process secure?
Yes, all validation happens client-side in your browser. Your JSON data and schemas are never sent to any external servers, ensuring complete privacy and security.
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