CSS & JS Minifier
Minify CSS and JavaScript β remove comments, whitespace and reduce file size.
About this tool
Processing happens directly in your browser. No files are uploaded to the server.
CSS & JS Minifier removes unnecessary characters from CSS and JavaScript files β comments, whitespace, line breaks β without changing functionality. Smaller files load faster in the browser. Everything runs locally; your code is never sent anywhere.
How to use
- 1 Choose CSS or JavaScript mode using the toggle buttons.
- 2 Paste your code into the input box on the left.
- 3 Click Minify to process it instantly.
- 4 Copy the minified output or view the size reduction stats.
Frequently asked questions
Does minification break the code?
No. Minification only removes whitespace and comments. Logic and functionality remain unchanged.
Is my code sent to a server?
No. Minification runs entirely in your browser using JavaScript. Your code never leaves your device.
What is the difference between minification and compression?
Minification removes unnecessary characters from source code. Compression (like gzip) is an additional server-side step that further reduces transfer size.
Does it support both CSS and JavaScript?
Yes. Use the CSS / JavaScript toggle to switch between modes.