Format, beautify and validate your JSON online for free.
A JSON formatter (also called a JSON beautifier) takes minified or unreadable JSON data and adds proper indentation and line breaks, making it easy for humans to read and debug. This tool also validates your JSON — if there's a syntax error, it will tell you exactly where the problem is. Simply paste your raw JSON into the input box on the left and click "Format" to get clean, readable output instantly. No data is sent to any server — everything runs in your browser.