Paste messy JSON and the formatter cleans it up instantly: properly indented, consistently spaced, and easy to read.
Use it to beautify minified API responses, confirm that a payload parses before you start debugging, and minify again when you need compact output for a request body or a log line.
Parsing happens entirely in your browser, so API responses, database exports, and configuration files never leave your device.
Frequently Asked Questions
Is there a size limit?
Only your device’s memory. The tool handles anything a modern browser can parse, from small config files to multi-megabyte API payloads.
What happens if my JSON is invalid?
The formatter reports the parse error instead of guessing, so you can fix the exact spot that breaks and re-run it.
Can I paste sensitive JSON?
Yes. Formatting runs client-side — no data is transmitted, logged, or stored.