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JSON Formatter & Validator
Format, validate, and minify JSON instantly. Syntax highlighting, error detection, and adjustable indentation — all in your browser.
How to Use
1Paste your JSON in the input area
2Click Format to beautify or Minify to compress
3Copy the output with one click
Frequently Asked Questions
Does this validate JSON?
Yes — if your JSON has syntax errors, the exact error message is displayed.
Is my data safe?
100%. Everything runs in your browser. No data is sent anywhere.