JavaScript Minifier & Beautifier

JavaScript Minifier & Beautifier

Optimize your JavaScript code with advanced minification and beautification tools.

💡 Paste your JavaScript code or use the sample to get started. The tool will minify or beautify your code with syntax highlighting.
⚡ Reduce file size by up to 80%
🔒 Obfuscate code for protection
📊 Detailed compression statistics
🎨 Syntax highlighting for readability

Input JavaScript

// Sample JavaScript Code function calculateTotal(items, taxRate, discount = 0) { // Calculate subtotal let subtotal = items.reduce((sum, item) => { return sum + (item.price * item.quantity); }, 0); // Apply discount if (discount > 0) { subtotal -= subtotal * (discount / 100); } // Calculate tax and total const tax = subtotal * (taxRate / 100); const total = subtotal + tax; return { subtotal: subtotal.toFixed(2), tax: tax.toFixed(2), total: total.toFixed(2), discount: discount }; }// Example usage const cartItems = [ { name: ‘Laptop’, price: 999.99, quantity: 1 }, { name: ‘Mouse’, price: 29.99, quantity: 2 }, { name: ‘Keyboard’, price: 79.99, quantity: 1 } ];const result = calculateTotal(cartItems, 8.5, 10); console.log(‘Order Summary:’, result);

Processed JavaScript

Compression Statistics

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Original Size (bytes)
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Processed Size (bytes)
0%
Size Reduction
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Lines of Code
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Characters
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Functions

Compression Ratio

No compression data available

Processing JavaScript…

JavaScript Minifier Beautifier – One Tool to Optimize or Format JS Code (2025)

What Is a JavaScript Minifier Beautifier?

A JavaScript Minifier Beautifier is a free, all-in-one online tool that lets you compress (minify) or reformat (beautify) JavaScript code—in one click.

Whether you need to:

  • ✅ Minify for production (smaller files, faster load times)
  • ✅ Beautify for debugging (readable, indented, editable code)

…this tool handles both tasks instantly, with no sign-up, no cost, and full privacy.

Just paste your JavaScript code, click “Minify” or “Beautify”, and get optimized or human-readable output in milliseconds.

Perfect for developers, students, testers, freelancers, and web professionals.

How to Use the JavaScript Minifier Beautifier

It takes seconds to optimize or clean up your code:

1. Paste Your JavaScript Code

  • Copy raw JS from a .js file, <script> tag, or framework output
  • Supports ES6+, async/await, modules, arrow functions, and more

2. Choose Your Action

  • Minify: Remove comments, whitespace, and redundant characters for production
  • Beautify: Add indentation, line breaks, and structure for readability

3. Get Results Instantly

✅ View formatted or minified output
📋 One-click copy to clipboard
📥 Download as .js file
🔄 Reset to start over
✅ Fully responsive – works on iPhone, Android, and desktop
✅ No email, no login, no cost

Why Use a JavaScript Minifier Beautifier in 2025?

🚀 Minify for Better Performance

  • Reduce JS file size by 30–50%
  • Improve Core Web Vitals (LCP, FID)
  • Lower hosting and bandwidth costs
  • Follow Google Lighthouse best practices

🧼 Beautify for Clarity & Collaboration

  • Turn unreadable code like function a(b){return b*2} into clean, indented JavaScript
  • Debug third-party scripts or reverse-engineer minified libraries (e.g., jQuery, React)
  • Ensure consistent code style across teams
  • Learn from real-world examples with readable structure

Our JavaScript Minifier Beautifier gives you the best of both worlds:
→ Faster sites for users
→ Clearer code for developers

Key Features

⚡ Two-in-One Tool – Minify or beautify with one click
🔒 100% Browser-Based – Your code never leaves your device
📱 Fully Responsive – Works on mobile and desktop
🧩 Modern JS Support – ES6+, async/await, optional chaining, nullish coalescing, dynamic imports
⏱️ Sub-Second Results – Even for large scripts
📤 One-Click Copy & Download – Ready to deploy or edit
✅ Syntax-Preserving – Never breaks valid JavaScript logic

Frequently Asked Questions

Q: Is this really a free JavaScript Minifier and Beautifier?

Yes! 100% free—no trials, sign-ups, or hidden fees.

Q: Are my scripts stored on a server?

No. All processing happens in your browser. Your code is never saved, sent, or logged.

Q: Will minifying break my site?

No. Our minifier preserves all functionality—it only removes comments, extra spaces, and unnecessary characters.

Q: Is it possible to make minified frameworks like jQuery or React seem better?

Absolutely! Paste any minified JS to instantly beautify it for learning or debugging.

Q: Does it work with ES2022 and later syntax?

Yes! Fully supports modern JavaScript, including optional chaining (?.), nullish coalescing (??), and dynamic imports.

Q: Is it possible to use it on my phone?

Yes! Fully optimized for iPhone and Android—ideal for quick debugging on the go.

Q: Who is this tool for?

Great for students, WordPress users, freelancers, agency teams, and developers who need fast, reliable JS optimization or cleanup.

Q: Does it check JavaScript syntax?

Not directly—but it won’t minify invalid code. For full validation, pair it with a JSHint Validator or similar tool.

Relevant Resources

Enhance your frontend workflow with these free ToolsSpark tools:

All tools are 100% free and require no login.

Trusted by Web Professionals Worldwide

For authoritative best practices on JavaScript performance and code quality, refer to the Google Web.dev JavaScript Optimization Guide —a high-authority resource used by developers globally to build fast, maintainable, and accessible websites.

✅ Clean up or optimize your JavaScript now—fast, free, and forever private.
Use JavaScript Minifier Beautifier – Free at ToolsSpark