What is JSON Validation?
JSON validation checks whether JSON data conforms to syntax rules. Common errors include missing quotes, incorrect comma placement, and mismatched brackets. Our tool quickly detects these errors and pinpoints the problem line.
How to Use
- Paste JSON data into the input box.
- Click "Validate" to check syntax.
- If there are errors, the tool shows error messages and line numbers.
- If JSON is valid, a green success message appears.
Features
- ✓ Real-time validation
- ✓ Error line detection
- ✓ Detailed error messages
- ✓ Nested structure support
- ✓ One-click clear
- ✓ Browser-local processing
- ✓ No signup
- ✓ Completely free
FAQ
What's the difference between JSON validation and formatting?
Validation checks syntax correctness only, while formatting also beautifies output. This tool focuses on quickly verifying JSON validity and pinpointing error line numbers.
What JSON formats are supported?
All standard JSON formats are supported, including nested objects, arrays, strings, numbers, booleans, and null values.
Will data be uploaded?
No! All validation happens locally in your browser. Data never leaves your device.