JSON Beautifier
Paste minified JSON and format it with proper indentation and syntax highlighting. Validates structure too.
JSON beautifying (or "pretty-printing") takes minified or inconsistently-formatted JSON — often a single unreadable line returned by an API or logged by a server — and re-indents it into a structured, human-readable shape. You'll reach for it whenever you're debugging an API response, reading a config file someone minified, or pasting JSON into a code review and want to actually see what's in it. This tool also validates the JSON as it formats it, so a syntax error (a trailing comma, an unquoted key, a missing bracket) surfaces immediately with a clear message instead of silently failing. Everything runs client-side in your browser — nothing you paste here is sent anywhere.