CSS Minifier
MinifiersReduce CSS file size and speed up website loading with our online CSS minifier. This tool removes unnecessary whitespace and comments to optimize your stylesheets for production.
Input411 Bytes
Output
Reduce CSS file size and speed up website loading with our online CSS minifier. This tool removes unnecessary whitespace and comments to optimize your stylesheets for production.
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Tip
Combine multiple CSS files into a single bundle before minifying to reduce total HTTP requests.
Did You Know?
Minification can improve your Google PageSpeed Insights score by reducing the Critical Path length.
CSS (Cascading Style Sheets) is the design language of the web, used to control the layout and appearance of HTML documents. During the development phase, developers use indentation, comments, and spacing to make the code maintainable. However, browsers do not require these human-friendly additions. CSS minification is the process of stripping away this extra data to create a production-ready file that prioritizes efficiency and performance.
Best Practice
Use a .min.css file extension to clearly identify optimized files in your project directory.
Q: Will minifying my CSS break my website layout? A: No, minification only removes non-functional characters like spaces and comments; the underlying logic and style rules remain exactly the same.
Q: How much file size can I expect to save? A: Most developers see a reduction of 15% to 25% depending on the amount of comments and whitespace in the original file.
Q: Should I minify my CSS during development? A: It is recommended to work with unminified files during development for readability and only minify when deploying to production.
Q: Does this tool support modern CSS features? A: Yes, our minifier supports CSS3 features including Flexbox, Grid, Custom Properties, and Media Queries.