JSON Formatter & Validator

What this tool does

Paste any JSON data and this tool will validate it, then let you either pretty-print it (readable, indented format) or minify it (compact, no whitespace — useful for production or reducing payload size).

If your JSON has a syntax error, this tool will flag it so you can find and fix the issue, rather than guessing where the structure broke.

Why format JSON

Raw JSON from an API response or a minified file is often a single unreadable line. Pretty-printing adds indentation and line breaks so you can actually read the structure — useful when debugging API responses, config files, or data exports.