JSON Schema Validator
🎯 Validate JSON data against schema specifications with our comprehensive validator. Support for multiple draft versions, real-time validation, and detailed error reporting. 100% free, secure, and private - no registration required!
JSON Schema
JSON Data
Ready to Validate?
Choose your validation settings and process your JSON data
💡 Tip: Upload files using the "Upload" buttons above or paste JSON directly
Get Started in Seconds
Validate your JSON data against schemas in just 4 simple steps. No registration, no downloads, no hassle.
📋 Add JSON Schema
Paste your schema or click Upload to select a schema file from your computer.
📄 Add JSON Data
Add your JSON data to validate. Our tool automatically checks syntax as you type.
⚙️ Configure Settings
Select your schema draft version and any additional validation options.
✅ View Results
Hit Validate JSON and see instant validation results with detailed error reports.
Why Choose Our JSON Schema Validator?
Professional-grade JSON schema validation tool trusted by developers worldwide. Fast, secure, and completely free to use.
🔒 100% Private & Secure
- ✓ All validation happens in your browser
- ✓ No schemas sent to servers
- ✓ Your data never leaves your device
⚡ Fast & Efficient
- ✓ Instant validation results
- ✓ Real-time schema validation
- ✓ Handles complex schemas
📋 Multiple Draft Support
- ✓ Draft-07, Draft-06, Draft-04
- ✓ Automatic draft detection
- ✓ Backward compatibility
🎯 Detailed Error Reports
- ✓ Precise error locations
- ✓ Clear error descriptions
- ✓ Multiple error collection
🆓 Free & Accessible
- ✓ No registration required
- ✓ Works on all devices
- ✓ Mobile-friendly interface
📁 File Upload Support
- ✓ Direct file upload from device
- ✓ Automatic JSON formatting
- ✓ Drag & drop support
💼 Perfect for Development Teams
API Development:
Validate request/response schemas, ensure API contracts
Data Validation:
Ensure data integrity, validate user inputs, form validation
Configuration:
Validate config files, environment settings, deployment configs
Testing & QA:
Schema compliance testing, automated validation, regression tests
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Read JSON GuideFrequently Asked Questions
Got questions? We've got answers. Everything you need to know about our JSON Schema Validator.
How do I validate JSON against a schema?
Simply paste your JSON Schema and JSON data into the respective fields, then click 'Validate JSON'. Our tool instantly shows validation results with detailed error reporting.
Is the validator completely free?
Yes! Our JSON Schema Validator is 100% free with no registration required. All validation happens in your browser, ensuring complete privacy and security.
Which JSON Schema drafts are supported?
We support Draft-07, Draft-06, and Draft-04 specifications. The tool automatically detects the draft version or you can manually select it from the dropdown.
Is my schema and data secure?
Absolutely! Your JSON schemas and data never leave your browser. All validation happens locally on your device. We don't store, access, or transmit any data.
What validation errors can it detect?
Our validator detects all schema violations: type mismatches, missing required fields, invalid formats, constraint violations, and provides precise error locations with clear descriptions.
Perfect for API development?
Absolutely! Essential for API development, request/response validation, configuration management, data integrity testing, and ensuring contract compliance in microservices.