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Minify and compress JavaScript code to reduce file size. Remove whitespace, comments, and optimize JS for faster website loading. Free JS minification tool.
Remove comments and whitespace while preserving functionality.
Smaller JS files load faster and improve performance.
All processing happens locally in your browser.
See exactly how much space you saved.
JavaScript minification is the process of removing unnecessary characters from JS code without changing its functionality. This includes removing whitespace, comments, and optimizing the code structure to reduce file size.
Minified JavaScript files are smaller, which means faster download times, reduced bandwidth usage, and improved website performance. This leads to better user experience and faster page load times.
When done correctly, minification should not break your JavaScript. However, some edge cases or syntax errors in the original code might cause issues. Always test minified code before deployment.
Compression ratios vary depending on your coding style. Well-commented and formatted JavaScript can often be compressed by 30-70%. The actual savings depend on the amount of whitespace and comments.
This tool is great for basic minification and learning. For production websites, consider using professional tools like UglifyJS, Terser, or build tools like Webpack that offer advanced optimization features.