JSON is easy for machines to read but painful for humans when it arrives minified on a single line. This JSON formatter takes raw, messy, or minified JSON and pretty-prints it with consistent indentation so you can actually read the structure, spot the key you need, and understand nesting at a glance. It also validates as it formats: if the JSON is broken, you get a clear error pointing at the problem instead of a silent failure. You can switch between formatting (adding whitespace for readability) and minifying (stripping whitespace to shrink payloads for production). Because the entire process happens in your browser, you can safely paste API responses, config files, or logs without worrying that sensitive data is uploaded to a server. It is a daily-driver tool for backend and frontend developers, QA engineers, and anyone debugging an API.
Format, minify, and validate JSON with precise error locations.
