TXT-03Text
JSON Formatter
Format and validate JSON
TXT-03Result
Your data never leaves your device: this tool runs locally in the browser.
JSON Formatter
Pretty-print JSON with indentation or minify it to one line. The tool validates syntax and points to the error location. Processing is local.
Frequently asked questions
Why doesn't my JSON validate?
Common causes: single quotes, a trailing comma, or comments — the JSON standard allows none of these.
Is it safe to paste sensitive data?
Yes, processing happens in your browser; nothing is transmitted.