Paste your CSS code, minify it, copy it, or download it as a CSS file.
What You Get with Our Free CSS Minifier
Strips Every Excess Character
Removes whitespace, comments, and line breaks while keeping all your styles working exactly the same.
Instant Minification
Paste your CSS and get the compressed output in seconds, ready to copy into your project.
Smaller Stylesheets
Cut your CSS file size down, which means faster downloads and quicker page rendering.
Production Ready Output
The minified code is clean and ready to drop straight into a live site with no extra steps.
No Signup Needed
Use it free with no account. Just paste, minify, and copy your optimized stylesheet.
Runs in Your Browser
Nothing to install. The whole tool works online on any device you’re using.
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Why Developers Use Our CSS Minifier
Page speed shapes both rankings and how visitors feel about your site, and CSS is one of the simplest places to claw back time. Minifying your stylesheets cuts file size without changing a single style, so your pages render faster and use less bandwidth with zero risk to how they look. Across a full site, those trimmed kilobytes add up to a noticeably snappier experience. Our tool does it cleanly and instantly, no setup and no learning curve.
We made this to fit right into a normal development routine, free and without friction. If you care about performance, a few of our other free tools work alongside this one. Use the jQuery & JavaScript Minifier to compress your scripts the same way, the Page Speed Insights Checker to track your load times, the Image Compressor to shrink heavy graphics, and the Website SEO Audit to catch other on page issues.
How CSS Minification Works
Compress and optimize your CSS code instantly by pasting your stylesheet and generating minified output automatically.
Paste Your CSS
Drop your stylesheet code into the input box on the tool.
Run the Minifier
Click minify and the tool strips out all the excess characters instantly.
Get the Output
The compressed, production ready CSS appears, smaller than your original file.
Copy and Use
Copy the minified stylesheet and add it straight to your project.
Frequently Asked Questions About CSS Minifier
If you’re working on site speed, these answers cover the common questions about minifying CSS. Our free CSS minifier compresses your stylesheets instantly with no signup, so your pages load faster without changing how they look.
What is a CSS minifier?
A CSS minifier compresses stylesheet code by removing unnecessary spaces, comments, and formatting.
Why should I minify CSS files?
Minifying CSS helps reduce file size and improves website loading speed.
Will CSS minification affect website design?
No, minification only removes unnecessary code formatting without changing styles or functionality.