CSS Minifier & Beautifier

CSS minification removes unnecessary characters from your stylesheet without changing its functionality. This includes whitespace, line breaks, comments, and redundant semicolons. It also shortens hex colour codes (e.g. #aabbcc becomes #abc). The result is a smaller file that browsers download faster, improving page load time and Core Web Vitals scores.

Yes, minified CSS is functionally identical to the original. Browsers interpret it exactly the same way. The only difference is that it is harder for humans to read, which is why you should always keep the un-minified source in your version control and serve the minified version to visitors. This tool does not alter any selectors, properties, or values.

Minifying compresses CSS by removing all unnecessary whitespace, comments, and formatting to produce the smallest possible file. Beautifying does the opposite: it takes compressed or poorly formatted CSS and adds consistent indentation, line breaks, and spacing so developers can read and edit it easily. Use minify for production, beautify for development.

Typical savings range from 15 % to 40 %, depending on how much whitespace and how many comments the original file contains. Heavily commented stylesheets or CSS generated by preprocessors like Sass and Less often see the largest reductions. This tool shows exact before/after sizes and percentage saved after every conversion.

The Dewx CSS Minifier runs entirely in your browser, so your code never leaves your machine. It provides real-time syntax checking, compression statistics (original size, output size, bytes saved, percentage reduction), and one-click copy. Plus, Dewx is building an all-in-one business OS with unified inbox, CRM, AI assistant, and more. Join the free plan to streamline your entire workflow.