code Original JavaScript

// Advanced JavaScript minification example
class ShoppingCart {
  constructor() {
    this.items = [];
    this.taxRate = 0.08;
  }

addItem(product, price, quantity = 1) {
    this.items.push({ product, price, quantity });
    console.log(`Added ${quantity} ${product}(s) to cart`);
  }

calculateSubtotal() {
    return this.items.reduce((total, item) => 
      total + (item.price * item.quantity), 0);
  }

applyDiscount(percentage) {
    if (percentage > 0 && percentage <= 50) {
      const discount = this.calculateSubtotal() * (percentage / 100);
      return discount;
    }
    throw new Error('Invalid discount percentage');
  }

calculateTotal(discountPercentage = 0) {
    const subtotal = this.calculateSubtotal();
    const discount = discountPercentage > 0 ? 
      this.applyDiscount(discountPercentage) : 0;
    const tax = (subtotal - discount) * this.taxRate;
    return (subtotal - discount + tax).toFixed(2);
  }

displayCartSummary() {
    console.log('==== CART SUMMARY ====');
    this.items.forEach(item => {
      console.log(`${item.quantity}x ${item.product} - $${item.price.toFixed(2)} each`);
    });
    console.log('======================');
  }
}

// Create cart instance
const cart = new ShoppingCart();

// Add items to cart
cart.addItem('Laptop', 1200);
cart.addItem('Mouse', 25.99, 2);
cart.addItem('Keyboard', 89.50);

// Display summary
cart.displayCartSummary();

// Calculate total with discount
const total = cart.calculateTotal(15);
console.log(`Total with 15% discount: $${total}`);

compress Minified Output

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0 KB

Minified Size

0 KB

Reduction

Processing Time

0 ms

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description Before Minification

Larger file size
Readable code structure
Full comments and documentation
Descriptive variable names
Whitespace for readability

bolt After Minification

Reduced file size
Optimized for fast loading
Removed comments and whitespace
Shorter variable names
Obfuscated logic

tune Minification Settings

Default

Aggressive

Safe Mode

code Basic Optimization

Remove Whitespace

Remove Comments

Collapse Variables

sync_alt Variable Renaming

Rename Variables

Rename Globals

Min Length:

Max Length:

delete Dead Code Removal

Remove Dead Code

Remove console.*

Remove debugger

JavaScript Minifier Tool | Make Your JS Small & Fast

This is a free online tool to make your JavaScript files smaller and faster. It is easy to use and helps your website load quicker. Works with modern JS and can remove extra spaces, unused code, and rename variables.

Main Features

Make JS files smaller to save space and load faster
Safe and private – everything happens in your browser, nothing goes to a server
Works on Chrome, Firefox, Edge, Safari, and other browsers
Minify small or medium JS files very quickly
Supports modern JavaScript (ES6+)
No sign-up, download, or installation needed – just paste your code
Removes comments, extra spaces, and unused code automatically
Good for personal projects or websites for business
Can be used with other JS tools to clean your code fully

Benefits

Make websites faster for users
Save internet bandwidth and server space
Keep your code clean and organized
Harder for others to copy your code
Very easy to use, even if you are not a programmer

How to Use

Copy your JavaScript code
Paste it into the tool
Choose minify options if needed
Click “Minify” to make your code smaller and faster
Copy the new code and use it on your website