JSON Formatter
Format, beautify and validate JSON instantly. No signup required.
Private by design — your data stays in your browserAdvertisement
How to Format JSON
Paste minified or messy JSON into the box and this tool will indent it cleanly, or flag exactly where it's invalid. Minify does the reverse — stripping whitespace for production use.
How to use this tool
- Paste your JSON into the input box.
- Click Format JSON (or Minify).
- Copy the result.
Why use our JSON formatter?
It validates as it formats, pointing out syntax errors immediately, and never sends your data to a server.
Frequently Asked Questions
Is this JSON formatter free?
Yes, completely free with no limits.
Does it validate my JSON?
Yes, invalid JSON shows a clear error message instead of a result.
Is my data sent to a server?
No, formatting happens entirely in your browser using native JSON parsing.
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