Free Online Code Minifier
Compress your HTML, CSS, and JavaScript to improve website speed.
What is Code Minification?
Minification is the process of removing all unnecessary characters from source code without changing its functionality. This includes removing whitespace, comments, newlines, and shortening variable names (in JavaScript).
The result is a compact file that is much faster for browsers to download and parse. Minifying your code is a critical step in optimizing your website for performance and achieving better scores in tools like Google PageSpeed Insights.
Key Features
Multi-Language Support
Minify HTML, CSS, and JavaScript code with specialized algorithms for each language.
Performance Metrics
Instantly see the original size, minified size, and the percentage of space you saved.
Powerful JS Compression
Uses the robust Terser library to safely and effectively minify even complex JavaScript code.
Convenient Input Tools
Paste code directly, upload a file, or use the handy copy and clear buttons to manage your workflow.
Easy Export
Copy the minified code to your clipboard or download it as a file with the correct extension (`.html`, `.css`, `.js`).
Secure & Client-Side
All minification happens in your browser. Your code is never sent to our servers, ensuring it remains private.
Code Minifier
How to Use
Paste Your Code
Paste your un-minified code into the input box or use the upload button.
Select the Language
Choose the correct language (HTML, CSS, or JavaScript) from the dropdown menu.
Click "Minify Code"
Our tool will instantly remove all unnecessary characters and compress your code.
Use the Result
Copy the minified code or download it as a file to use in your production website.
Understanding the Results
Performance Metrics
The summary shows three key numbers: the **Original Size** of your code, the new, smaller **Minified Size**, and the **Savings** as a percentage. This percentage represents how much smaller your file is and how much faster it will download for your users. A higher savings percentage is better!
What to do with the minified code?
The minified code is ready for your production website. You should:
- **Replace your development files:** In your live website, you should use the minified versions of your CSS and JavaScript files instead of the beautified, readable versions.
- **Use in build tools:** Developers often integrate minification into an automated build process (using tools like Webpack or Gulp) that runs before deploying a site.
- **Always keep a backup:** It is crucial to keep the original, un-minified version of your code saved, as the minified version is almost impossible for a human to read or edit.
Use Cases
Website Performance Optimization
This is the primary use case. By reducing the file size of your HTML, CSS, and JavaScript, you significantly decrease page load times, which improves user experience and can boost your SEO rankings.
Preparing Code for Production
Minification is a standard step in the web development process. Developers write code in a readable format and then use a tool like this to compress it before uploading it to a live server.
Ready to Speed Up Your Website?
Paste your code into the minifier above to instantly reduce its file size!
Minify Your Code NowFrequently Asked Questions
Is this tool free to use?
Yes, absolutely. Our Code Minifier is 100% free to use with no limits on the amount of code you can process.
Is it safe to put my code in this tool?
Yes. All minification happens entirely within your web browser using JavaScript. Your code is never sent to, or stored on, our servers, ensuring your work remains completely private and secure.
Will minifying my code break it?
Our tool uses safe and robust libraries (like Terser for JavaScript) that are designed to preserve your code's functionality. It is extremely rare for safe minification to break code. However, it's always best practice to test your minified code before deploying it to a live website.
What is the difference between minifying and compressing (Gzip)?
**Minifying** is done before you upload your files; it permanently removes characters from the file itself. **Compressing** (like with Gzip or Brotli) is done by your web server *after* you upload the files. It temporarily compresses the file for transfer and the browser uncompresses it. You should do both for maximum performance!
Conclusion
Our Free Online Code Minifier is an essential tool for any web developer looking to improve website performance. By providing safe and effective compression for HTML, CSS, and JavaScript, it helps you reduce page load times, save bandwidth, and provide a better experience for your users. It's a simple, fast, and secure way to perform a critical step in modern web development.
Have Questions or Need a Custom Tool?
Our team is here to help. Whether you have feedback on our tools or need a custom solution for your business, we'd love to hear from you.
Get in touch with us for support, suggestions, or partnership inquiries.
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