Dev Tool

JS Minifier

Reduce the size of your JavaScript files by removing unnecessary characters, spaces, and comments. 100% free — runs entirely in your browser.

Original Size: 0 B

Minified Size: 0 B

Saved: 0 B

Remove Line Comments (//) Remove Block Comments (/* */) Remove Whitespace Remove console.log()

Input JavaScript 0 chars

Minified JavaScript 0 chars

▼ 0% smaller

What is JavaScript Minification?

JavaScript minification removes all unnecessary characters from source code without changing its functionality. This drastically reduces file size, leading to faster page loads, better Core Web Vitals scores, and improved user experience — especially on mobile connections.

What This Tool Optimizes

Line Comments (//): Single-line comments are removed.
Block Comments (/* */): Multi-line comments are stripped (preserves /*!...*/ license comments).
Extra Whitespace: Multiple spaces, tabs, and newlines are condensed.
console.log(): Optional removal of all debug console statements.

Note: For production-grade minification with variable renaming and dead code elimination, consider tools like Terser or UglifyJS in your build pipeline. This tool is ideal for quick, safe minification without a build setup.