Json Validator
JSON Validator is the free online validator tool for JSON.
How to use this tool
Paste your JSON data to validate its syntax and format. This tool will help you identify any structural errors.
Paste your JSON here to validate. Example: {"name": "John", "age": 30}
JSON Validator
Valid JSON!
Your JSON is properly formatted
Type
Keys
Items
Size
Invalid JSON
💡 Common JSON Issues:
- Missing or extra commas
- Unquoted keys (use "key" not key)
- Single quotes instead of double quotes
- Trailing commas before closing braces
- Unescaped special characters in strings