JSON Formatter
Paste minified or messy JSON and get it beautifully indented and readable in one click, or compress it down to a single minified line.
Input
Readable JSON for debugging and documentation
API responses and config files are often returned as a single unreadable line. This formatter re-indents the structure with your choice of 2 or 4 spaces, making nested objects and arrays easy to scan visually — and flags a syntax error immediately if the JSON isn't valid, along with a plain description of what's wrong.
Frequently asked questions
Does it validate the JSON as well as format it?+
Yes — if the JSON has a syntax error, the tool shows an error message instead of a formatted result, so you always know whether your JSON is actually valid.