Code Minifier
Minify JavaScript, CSS, and HTML code instantly. Reduce file sizes, improve load times, and optimize your web applications. All processing happens locally in your browser.
Embed This Tool
Add this tool to your website with customizable styling
How to Use
Select your language
Choose between JavaScript, CSS, or HTML. The tool will use the appropriate minification algorithm for each language.
Paste or upload your code
Paste your code directly into the input area, or drag and drop a file. The tool automatically detects the file type when you upload.
View the minified result
The minified code appears instantly in the output panel. You'll see statistics showing the original size, minified size, and percentage reduction.
Copy or download
Click "Copy" to copy the minified code to your clipboard, or "Download" to save it as a file with the appropriate .min extension.
Frequently Asked Questions
What is code minification?
Code minification is the process of removing unnecessary characters from source code without changing its functionality. This includes removing whitespace, newlines, comments, and shortening variable names. The result is smaller file sizes that load faster, reducing bandwidth usage and improving website performance.
How much can I reduce file size?
The reduction depends on your original code. Well-formatted code with lots of comments and whitespace can typically be reduced by 40-70%. Already compact code might only shrink by 10-20%. The tool shows you the exact reduction percentage and byte savings for each minification.
Is my code safe? Will it work the same after minification?
Yes! The minification process preserves your code's functionality. All processing happens locally in your browser—your code never leaves your device. For JavaScript, we use Terser, an industry-standard minifier used by major bundlers. For CSS and HTML, we use proven minification algorithms that safely remove only non-essential characters.
What if I get a minification error?
Errors usually indicate syntax problems in your original code. JavaScript minification is particularly strict—ensure your code has no syntax errors, unclosed brackets, or invalid statements. The error message will help you identify the issue. Fix the problem in your original code and try again.
Should I minify code for production?
Absolutely! Minification is a best practice for production websites. Smaller files mean faster downloads, better user experience, and lower hosting costs. Most build tools (webpack, Vite, Rollup) include minification automatically, but this tool is perfect for quick one-off minification or when you don't have a build process.