About This Tool
Format messy JavaScript code with proper indentation, or minify JS to reduce file size for production. This tool handles modern ES6+ syntax including arrow functions, template literals, async/await, and more.
JavaScript Formatter & Minifier
Input JavaScript
Output
How to Use
- Paste your JavaScript code into the input area on the left
- Select your preferred indent size (2 spaces, 4 spaces, or tab)
- Click "Format" to beautify with proper indentation, or "Minify" to compress
- Copy the result using the "Copy to Clipboard" button
Supported Features:
- ES6+ Syntax: Arrow functions, template literals, destructuring
- Async/Await: Modern async JavaScript patterns
- Classes: ES6 class definitions and methods
- Modules: Import/export statements
Frequently Asked Questions
What is JavaScript formatting?
JavaScript formatting adds proper indentation, line breaks, and spacing to make your code readable. It follows standard coding conventions to improve maintainability.
What is JavaScript minification?
Minification removes all unnecessary characters from JavaScript without changing functionality. This includes whitespace, newlines, and comments. The result is a smaller file that loads faster.
How much can minifying reduce file size?
JavaScript minification typically reduces file size by 20-50%, depending on the original formatting. Files with lots of comments and whitespace see the biggest savings.
Will minifying break my code?
No, minification preserves all JavaScript functionality. It only removes characters that the interpreter doesn't need. Your code will execute exactly the same way.
Is my code secure?
Yes. All processing happens locally in your browser using JavaScript. Your code is never sent to any server or stored anywhere.