What Is JSON Schema Validator?
JSON Schema Validator checks whether JSON data follows a schema definition. It is useful for API response checks, required field validation, type checks, format checks, and array or object structure review.
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JSON Schema Validator
Validate JSON data against a JSON Schema directly in your browser.
Input JSON
JSON Data
Schema
JSON Schema
Summary
Validation Result
Error Details
Browser-Based Validation
The JSON data and schema are processed in your browser and are not uploaded to the server. Input text is not saved to LocalStorage.
FAQ
What is JSON Schema?
JSON Schema is a specification for describing the structure, required fields, types, and validation rules of JSON data.
Can I validate API responses?
Yes. It is useful for checking whether an API response matches the expected contract.
Which draft is supported?
This tool targets common Draft-07 style keywords for everyday browser checks.