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JSON formatter & validator

Format and check JSON. Your text clears on refresh.

Processed locally · No input or result uploaded

Advanced options

Warning: replaces literal \n and \\n with line breaks. This can make JSON strings invalid.

Input

1 line · 0 characters

Result

Paste or type JSON to get started.

Processed locally in your browser · No data uploaded ·
Tool limits

Tool limits: 1,048,576 UTF-16 units of input · 256 nesting levels · 8,388,608 units of output. Validation checks JSON syntax, not a JSON Schema.

Optional action metadata requires Analytics consent; input and result content stays local.

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