JSON Formatter & Validator
Paste JSON to format, validate, and minify. Syntax highlighting, error detection, and structure stats.
How to Use This JSON Formatter
Paste your JSON into the input box. The tool instantly validates it and shows a formatted, syntax-highlighted version. If there are errors, you get the exact error message with the position where parsing failed.
Choose your indent level (2, 4, or 8 spaces). Copy the formatted version for readability or the minified version for production. The stats bar shows the structure of your JSON — how many keys, values, arrays, and objects it contains, plus the nesting depth.
Useful for debugging API responses, cleaning up config files, validating data before sending, and making minified JSON readable. Everything runs in your browser — no data is ever sent to any server.