JSON Validator
Validate, format, and minify JSON — see parse errors with exact line/column.
How to Use
- Paste JSON on the left.
- Errors are reported with line and column.
- Use format / minify buttons to beautify or compact.
JSON input
Result
Common errors
Trailing comma
Not valid JSON ({"a": 1,})
Single quotes
JSON requires "double quotes"
Unquoted keys
{ a: 1 } — keys must be "quoted"
Comments
Strict JSON doesn\'t allow // or /* */
undefined
Not a JSON value — use null
NaN / Infinity
Not valid JSON numbers
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