JSON Schema Validator
A free online tool to validate JSON documents against JSON Schemas with instant feedback and detailed error reporting.
Key Features:
- Real-time JSON Schema validation
- Syntax highlighting and error detection
- Property documentation tooltips
- Auto-save your work between sessions
- Supports all JSON Schema draft versions
- 100% client-side - no data leaves your browser
How to Use This Validator
- Enter your JSON Schema in the top editor
- Paste or type your JSON document in the bottom editor
- Click "Validate" or press Ctrl+Enter
- Review errors and hover over properties for documentation
Pro Tip: This tool supports all JSON Schema keywords including
$ref, allOf, anyOf, and oneOf for
complex validation scenarios.
Why Validate JSON?
JSON Schema validation helps you:
- Ensure API request/response consistency
- Catch configuration errors early
- Document your data structures
- Automate quality checks
This tool is ideal for developers working with REST APIs, configuration files, or any JSON-based data.
JSON Schema
JSON to Validate
Validation Results
No validation performed yet.