Auto Validation
JSON is validated as you type so you can catch syntax issues before copying or exporting the result.
JSON Formatter
Paste your JSON to validate, format, and beautify it with syntax highlighting. Instantly detect and report errors.
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Input JSON
Formatted Output
Output will appear here...
Multiple Indent Styles
Switch between 2 spaces, 4 spaces, or tabs at any time and the formatted output updates instantly.
Syntax Highlighting
Keys, strings, numbers, booleans, and null values use different colors so large JSON stays readable.