What does minify JS do?

Minifying JavaScript (JS) reduces file size by removing unnecessary characters like spaces, comments, and line breaks without changing its functionality. This optimization improves website speed, performance, and loading times by reducing bandwidth usage.

How Minifying JS Works

✔ Removes Whitespace & Line Breaks → Reduces file size.
✔ Shortens Variable & Function Names → Saves bytes.
✔ Eliminates Comments & Unused Code → Streamlines execution.

Example Before Minification:

function greetUser(name) {
console.log("Hello, " + name + "!");
}

After Minification:

function greetUser(n){console.log("Hello, "+n+"!");}

Benefits of Minifying JS

✔ Faster Load Times: Smaller files load quicker in browsers.
✔ Better Performance: Reduced parsing and execution time.
✔ Lower Bandwidth Usage: Optimizes resources for users on slow connections.
✔ Improved SEO: Faster websites rank higher on search engines.

Tools for Minifying JS: UglifyJS, Terser, Google Closure Compiler.