JavaScript Minifier
Minify JavaScript code to reduce file size for production.
JavaScript Minifier
Paste your JavaScript code below and click "Minify" to reduce file size.
What is JavaScript Minification?
JavaScript minification is the process of removing unnecessary characters from JavaScript source code without changing its functionality. This includes removing whitespace, comments, and shortening variable names.
Why Minify JavaScript?
- Faster Load Times: Smaller files transfer faster over the network
- Reduced Bandwidth: Less data means lower hosting costs
- Better Performance: Browsers parse smaller files more quickly
- Basic Obfuscation: Minified code is harder to read
Features of This Tool
- ES6+ Support: Handles modern JavaScript including arrow functions, classes, async/await, and more
- Variable Mangling: Shortens variable and function names for maximum compression
- Dead Code Elimination: Removes unreachable code
- Comment Preservation: Option to keep license headers and important comments
- Size Statistics: Shows original size, minified size, and compression ratio
- Client-Side Processing: Your code never leaves your browser
How to Use
- Paste your JavaScript code into the input area
- Optionally check "Preserve important comments" to keep license headers
- Click the "Minify JavaScript" button
- Review the size comparison statistics
- Copy the minified code using the copy button
Privacy & Security
This tool processes your JavaScript entirely in your browser using the Terser minification library. Your code is never sent to any server, ensuring complete privacy for your source code.
Features
Our JavaScript Minifier tool helps you optimize your JavaScript code for production by removing unnecessary whitespace, comments, and shortening variable names. This results in smaller file sizes and faster page load times.
The tool supports modern ES6+ JavaScript syntax including arrow functions, template literals, async/await, destructuring, and more. You can optionally preserve important comments like license headers while still achieving significant size reductions.
All processing happens in your browser, so your code never leaves your device. The tool shows you exactly how much space you've saved with a real-time size comparison and compression ratio calculation.