JavaScript Formatter
Input
Output
Start typing to format your JavaScript
Your formatted JavaScript will appear here
About JavaScript Formatter
Our free online JavaScript Formatter is an essential tool for web developers. It helps you beautify, minify, and optimize JavaScript code instantly. Whether you're cleaning up legacy code, preparing scripts for production, or debugging complex functions, this tool makes JavaScript formatting effortless.
Key Features
Real-time Formatting
See your JavaScript formatted instantly as you type with live preview.
Beautify & Minify
Switch between readable formatted code and compressed minified output.
Smart Indentation
Properly indents functions, objects, arrays, and control structures.
100% Client-side
All JavaScript processing happens in your browser - your code stays private.
Copy & Download
One-click copy to clipboard or download as a .js file.
ES6+ Support
Handles modern JavaScript including arrow functions, destructuring, and async/await.
How to Use
- 1Paste your JavaScript code into the input area on the left.
- 2The tool automatically formats your code in real-time.
- 3Toggle between 'Beautify' for readable format or 'Minify' for production.
- 4Click 'Copy' to copy the output or 'Download' to save as a file.
- 5Use 'Clear All' to reset and start fresh.
Pro Tips
- 💡Minified JavaScript significantly reduces file size - essential for production websites.
- 💡Use beautified code during development for easier debugging.
- 💡The formatter preserves your code logic while improving readability.
- 💡Consider using source maps in production to debug minified code.