JS minifier

JavaScript Minifier — Compress JS Code Online

Free JavaScript minification tool that removes whitespace, comments, and unnecessary characters from JS code to reduce file size and improve page load performance. Minified JavaScript reduces parse time and improves Time to Interactive (TTI).

What JS Minification Does

• Removes whitespace, comments, and newlines
• Shortens variable and function names (optional)
• Reduces file size by 20-50% typically
• Keeps code functionally identical

Performance Impact

• Reduced JavaScript parse and execution time
• Better Time to Interactive (TTI) scores
• Lower bandwidth for users on mobile connections
• Improved Google Core Web Vitals (FID, TBT)

JavaScript minification is a standard step in modern build pipelines (Webpack, Vite, Rollup) for production deployments. Our online tool is perfect for quick one-off minification tasks.