What Is a JSON Formatter?
A JSON formatter (also called a JSON beautifier or JSON pretty printer) is a tool that takes raw, compressed or incorrectly indented JSON data and reformats it into a human-readable structure with consistent indentation, line breaks and spacing. JSON (JavaScript Object Notation) is the most widely used data interchange format for APIs, configuration files and web applications — but raw JSON from APIs is often minified into a single unreadable line.
Our free online JSON formatter instantly beautifies your JSON with syntax highlighting, shows a collapsible tree view for exploring nested structures, validates the JSON for errors, and calculates statistics like key count, depth and total values. It also supports minification (removing all whitespace) for production use.