JSON Formatter & Validator
Format, beautify and validate JSON online. Free JSON formatter with syntax highlighting, error detection and minify support.
What is JSON Formatter?
JSON (JavaScript Object Notation) is a lightweight data-interchange format that is easy for humans to read and write. Our JSON Formatter tool helps you format, beautify, and validate JSON data instantly in your browser. Whether you are debugging API responses, working with configuration files, or cleaning up messy JSON, this tool processes everything client-side — your data never leaves your browser.
Features include pretty-printing with configurable indentation, minification for production use, and real-time error detection with helpful error messages pointing to the exact location of syntax issues.