JavaScript Minifier

Minify JavaScript code for production. Reduces file size.

Helpful?

Thanks for your feedback!

You have already rated this tool.

Input JavaScript

// Example JavaScript code
function calculateTotal(items) {
    let total = 0;
    
    for (let i = 0; i < items.length; i++) {
        const item = items[i];
        const price = item.price || 0;
        const quantity = item.quantity || 1;
        
        // Apply discount if available
        let discount = 0;
        if (item.discount) {
            discount = price * (item.discount / 100);
        }
        
        total += (price - discount) * quantity;
    }
    
    return total;
}

// Event listener
document.addEventListener('DOMContentLoaded', function() {
    const button = document.querySelector('#submit');
    
    button.addEventListener('click', function(event) {
        event.preventDefault();
        console.log('Button clicked!');
    });
});

Minified Output

Minification Options

Options

Remove comments

Remove extra whitespace

Remove newlines

Keep all semicolons

Actions

Compression Statistics

Size Comparison 0% reduction

Original: 0 B Minified: 0 B

Space Saved

Input Chars

Output Chars

Input Lines

Comments Removed

Quick Examples

About JavaScript Minification

This tool performs basic minification by removing comments, extra whitespace, and newlines. For production use, consider using advanced minifiers like Terser, UglifyJS, or build tools like Webpack or Vite which can also perform:

Variable name mangling (shortening)
Dead code elimination (tree shaking)
Constant folding and inlining
Scope hoisting and optimization

Related Tools

JavaScript Minifier

Input JavaScript

Minified Output

Minification Options

Compression Statistics

Quick Examples

About JavaScript Minification

Related Tools

JSON Formatter/Validator

UUID Generator

Regex Tester

JSON ↔ YAML Converter

Share this tool