JSON Formatter & Validator

Pretty-print, minify and validate JSON with helpful error messages.

How it works

Paste minified or messy JSON, then pretty-print to add indentation and line breaks, or minify to shrink it for APIs and logs. Invalid JSON shows a clear parse error so you can fix syntax quickly.

Example: minified {"a":1,"b":[2]} becomes neatly indented, multi-line JSON.

Indent

Input

Output