JSON Validator
Validate JSON syntax and find errors in your data.
About JSON Validator
Validate JSON syntax instantly with our free online JSON validator. Find and fix syntax errors in your JSON data before using it in applications. Get detailed error messages with line numbers for quick debugging.
Key Features & Benefits
Instant Validation
Validate JSON syntax in real-time as you type or paste.
Detailed Errors
Get precise error messages with line and column numbers.
Schema Validation
Optionally validate against JSON Schema for structure checking.
Auto-Fix Suggestions
Common errors include suggestions for quick fixes.
How to Use JSON Validator
Paste Your JSON
Enter the JSON data you want to validate.
Check Results
See validation status - green for valid, red for errors.
Fix Errors
Use error messages to locate and fix syntax issues.
Frequently Asked Questions
Common issues: missing quotes, trailing commas, unescaped characters, or mismatched brackets.
Basic validation checks syntax. For type checking, use JSON Schema validation.
JSON requires double quotes for keys and strings. No trailing commas or comments allowed.
Yes, paste any JSON response to check if it's valid and properly formatted.
Why Use Our JSON Validator?
Invalid JSON breaks applications. Catch syntax errors before they cause problems in production with instant validation and clear error messages.