Format JSON without uploading it
The formatter uses the browser’s built-in JSON parser. If the input is valid, you can pretty-print or minify it. If it is invalid, the page reports the parser error so you can find malformed commas, quotes, or brackets.
Privacy note
This tool is designed to work in the browser and does not require an account. If analytics or advertising are added later, those services may collect their own technical data; the privacy policy should be updated before they are enabled.