Best uses
Production asset preparation, front-end experiments, quick compression checks, and reducing readable CSS into a compact form.
CSS Minifier
Minify CSS online by removing unnecessary comments, whitespace and formatting while keeping your stylesheet compact and easier to deliver.
Free CSS Minifier
CSS Minifier is a free online developer tool that reduces unnecessary characters in CSS code. It can remove comments, extra whitespace and unnecessary formatting to create a more compact stylesheet.
What is CSS Minification?
CSS minification removes characters that are not normally required for a stylesheet to work, such as unnecessary whitespace and comments. The resulting CSS is smaller and easier to transfer to visitors.
How to Minify CSS
- Paste your CSS code into the input box.
- Select the optimization options you want.
- Click Minify CSS.
- Review the minified stylesheet.
- Copy the result.
CSS Minifier Features
- Remove CSS comments
- Remove unnecessary whitespace
- Remove final declaration semicolons where safe
- Show original and minified size
- Show percentage saved
- Copy minified CSS
- Works on desktop and mobile
- No account required
- Browser-based processing
Frequently Asked Questions
What does a CSS minifier do?
A CSS minifier removes unnecessary characters from CSS source code while keeping the stylesheet's intended rules and declarations.
Why should CSS be minified?
Smaller CSS files require fewer bytes to transfer, which can reduce the amount of stylesheet data sent to a browser.
Does CSS minification change the design?
Proper minification should preserve the intended CSS rules. It is still recommended to test important production stylesheets after optimization.
Is this CSS Minifier free?
Yes. The CSS Minifier is available as a free online developer tool.