pretty-print
This tool takes minified or messy JSON and pretty-prints it with proper indentation, while validating the syntax and pointing out exactly where an error occurs if the JSON is malformed.
Making a minified API response readable for debugging.
Validating that hand-written JSON config is syntactically correct before deploying it.
Formatting JSON consistently before pasting it into documentation.
The tool reports the parsing error, typically pointing to the position where the invalid syntax was found, so you can fix it quickly.
Yes — alongside pretty-printing, a minify option compresses the JSON back down to a single line with no extra whitespace.
ToolBench runs this tool entirely in your browser. Your file or text is processed on your own device using JavaScript — nothing is uploaded to a server, nothing is stored, and there's no sign-up wall between you and the result. That's true of every one of the 500+ tools on this site, from PDF utilities to unit converters.