JavaScript Minifier/Beautifier

Minify and beautify JavaScript code. Reduce file size and improve readability with proper formatting.

Enter JavaScript:

Benefits of Using JavaScript Minifier

Performance Optimization

Reduce JavaScript file size by up to 70% to improve page load times and website performance.

Bandwidth Savings

Smaller files mean less bandwidth usage, saving costs and improving mobile experience.

Code Readability

Beautify minified JavaScript to make it readable and easier to debug when needed.

Privacy First

All JavaScript processing happens locally in your browser. Your code never leaves your device.

Key Features

Minify JavaScript code

Beautify JavaScript code

Remove comments and whitespace

Optimize file size

Size comparison display

Percentage savings calculation

Copy to clipboard functionality

Works entirely offline

Free to use with no limitations

How to Use

Enter JavaScript Code

Paste or type your JavaScript code into the input field.

Choose Action

Click "Minify" to compress your JavaScript or "Beautify" to format it with proper indentation.

View Results

See the minified or beautified JavaScript in the output field. Check the size savings if you minified.

Copy Result

Click the copy button to copy the processed JavaScript to your clipboard.

Understanding JavaScript Minification and Formatting

JavaScript minification is the process of removing unnecessary characters from JavaScript code without changing its functionality. This includes removing whitespace, comments, and shortening variable names, resulting in smaller file sizes and faster page load times.

Our free JavaScript minifier and beautifier tool helps developers optimize their JavaScript files. Whether you're preparing code for production, debugging formatting issues, or improving code readability, JavaScript minification and beautification are essential skills.

Why JavaScript Minification Matters

Performance: Smaller JavaScript files load faster, improving website performance and user experience.
Bandwidth: Reduced file size saves bandwidth, especially important for mobile users and slow connections.
SEO: Faster loading times improve search engine rankings and user engagement.
Cost Savings: Reduced bandwidth usage can lower hosting and CDN costs.

JavaScript Beautification Benefits

Readability: Properly formatted JavaScript is easier to read and understand.
Debugging: Well-formatted code makes it easier to identify and fix issues.
Collaboration: Consistent formatting improves team collaboration and code reviews.
Maintenance: Clean, formatted code is easier to maintain and update.

Common Use Cases

Preparing JavaScript for production deployment
Optimizing website performance
Formatting minified JavaScript for debugging
Cleaning up messy JavaScript code
Reducing file sizes for faster downloads
Improving code readability for team collaboration

Our tool processes all JavaScript minification and beautification locally in your browser, ensuring complete privacy. No data is sent to any server, making it safe for any JavaScript code.

Code Examples

JavaScript - Before Minification

// Function to calculate sum
function calculateSum(a, b) {
  // Add two numbers
  const result = a + b;
  return result;
}

// Call the function
const sum = calculateSum(10, 20);
console.log('Sum:', sum);

JavaScript - After Minification

function calculateSum(a,b){const result=a+b;return result;}const sum=calculateSum(10,20);console.log('Sum:',sum);

JavaScript - Minification Function

// Simple JavaScript minifier function
function minifyJS(code) {
  return code
    .replace(/\/\/.*$/gm, '') // Remove single-line comments
    .replace(/\/\*[\s\S]*?\*\//g, '') // Remove multi-line comments
    .replace(/\s*([=+\-*\/%<>!&|?:,;{}()\[\]])\s*/g, '$1') // Remove spaces around operators
    .replace(/\s+/g, ' ') // Replace multiple spaces with single space
    .trim(); // Remove leading/trailing whitespace
}

// Usage
const code = `function example() {
  console.log('Hello');
}`;
const minified = minifyJS(code);
console.log(minified);

JavaScript Minifier/Beautifier