CSS Minifier Pro
Compress CSS stylesheets, Drag & Drop files, and optimize your code for maximum website speed.
Drag & Drop CSS File
Supported formats: .css, .txt
Quick Start Guide
Provide Code
Paste your CSS stylesheet in the "Live Input" tab, or drag and drop a full .css file in the "File Upload" tab.
Select Settings
Enable "Advanced Optimize" if you want the tool to convert lengthy values like margin: 0px 0px; into a clean margin: 0;.
Minify & Export
Click "Minify CSS Code". You can then copy the optimized output or download it directly as a new CSS file.
Why Use CSS Minifier Pro?
Improve Speed
Minified CSS files are significantly smaller. They download faster, improving your Core Web Vitals and Google PageSpeed scores.
Smart Optimization
Unlike basic minifiers, our Pro Engine understands CSS logic. It safely shrinks 10px 10px 10px 10px to just 10px.
Safe & Secure
All minification happens locally in your web browser. Your proprietary design code is never uploaded to any server.
Frequently Asked Questions
Does this remove my comments?
Yes, by default, all CSS comments (/* ... */) are removed to save space. You can toggle this off if you need to keep them.
Can I reverse this process?
Minification is typically a one-way process for production. To make the code readable again, you would need a "CSS Beautifier" or Formatter tool.