Web & Dev Utilities

JSON Formatter & Validator

Validate JSON from an API or device payload and format it for reading or minify it for sending.

The text is parsed with the browser’s JSON parser. If it is valid you get it pretty-printed or minified; if not, you get the parser’s error message.

Results are estimates for planning and learning. Check important numbers against your own data and a qualified professional. Everything is calculated in your browser; nothing you enter is sent anywhere.