JSON Schema Validator
Data & AI ToolsValidate JSON schema
Enter a schema and data to validate
About JSON Schema Validator
Validate JSON data against a JSON Schema definition.
Frequently Asked Questions
What is JSON Schema?
JSON Schema is a declarative language that defines the structure and constraints of JSON data. It specifies required fields, data types, value ranges, and patterns that valid JSON documents must follow.
How do I validate JSON against a schema?
Paste your JSON Schema in the left panel and your JSON data in the right panel. The tool validates your data in real-time and shows a green indicator for valid data or a red indicator with detailed error messages.
What schema features are supported?
This validator supports type checking, required properties, minimum and maximum values, string patterns, enum values, array item validation, and nested object schemas.
Is my data safe?
Yes! All validation happens entirely in your browser. Your JSON data and schemas are never sent to any server. No data is collected, stored, or transmitted.
Can I use this for API response validation?
Yes, JSON Schema is widely used for API contract validation. You can paste your API schema and test response data to ensure it conforms to the expected structure.
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