Format, validate, and explore JSON data with syntax highlighting and tree view.
Formatted JSON will appear here...Raw formatted output will appear here...A JSON formatter (also called a JSON beautifier or JSON prettifier) is an essential tool for developers working with JSON data. Our free online JSON formatter helps you validate, format, minify, and explore JSON structures with an intuitive interface. Whether you're debugging an API response, preparing configuration files, or analyzing data structures, this tool makes it easy to work with JSON.
Our JSON tool offers four core functions: Format (beautify with proper indentation and line breaks), Minify (compress JSON to a single line for storage or transfer), Validate (check JSON syntax and pinpoint errors), and Copy (one-click copy to clipboard). The output panel includes three views: highlighted syntax view, interactive collapsible tree view, and raw plain-text view.
JSON (JavaScript Object Notation) is a lightweight data interchange format that is easy for humans to read and write, and easy for machines to parse and generate. When you format JSON, you add proper indentation, line breaks, and spacing to make the data structure visually clear. This is especially useful when working with minified JSON from APIs, configuration files, or database exports.
Formatted JSON improves readability, helps catch structural errors, and makes debugging faster. Our tool provides syntax highlighting with distinct colors for keys, strings, numbers, booleans, and null values. The tree view allows you to collapse and expand nested objects and arrays, making it easy to navigate complex JSON documents. The validator checks for common issues like trailing commas, missing quotes, and mismatched brackets.