Runs in your browser · nothing is uploaded
JSON formatter & validator
Make JSON readable, shrink it, or find exactly where it breaks.
Paste JSON to check it
1 line · checked as you type
Formatted output
The formatted result appears here as you type.
Stays on your deviceFormatting and checking use your browser’s own JSON parser in this tab.
Share only when you choose“Share in a room” is the only time text leaves this browser — into a private room only you can open.
Readable JSONA two-minute guide