All Tools

CSS Minifier

Minify CSS code by removing comments, whitespace, and newlines

Input CSS

Minified Output

How CSS Minification Works

CSS minification reduces file size by removing unnecessary characters without changing functionality.

What Gets Removed

Benefits

Frequently Asked Questions

What does CSS minification do?
CSS minification removes comments, whitespace, newlines, and redundant characters from CSS code, reducing file size without changing functionality.
Is minified CSS harder to maintain?
Yes, keep your original formatted CSS for development and use minified version for production deployment.
How much can CSS be reduced?
Typically 20-50% depending on original formatting. Files with many comments and whitespace see the largest reductions.

Related Tools

JS Minifier HTML Beautifier Color Picker JSON Formatter

Go deeper

Read the SnoopTool guide behind this tool

The calculator gives you the number. These SnoopTool guides explain the method, the assumptions and the decision — with worked examples, data tables and FAQs.

Browse all SnoopTool guides →

Answers, not just a number

Short, exact answers to the questions people ask alongside this tool — the number first, then the working.

For teams, not just visitors

Want this calculator on your own site?

We build the calculators on SnoopTool as embeddable widgets in your branding, wired to your own lead form — the same maths, your colours, your domain, your leads. Tell us which one and we will send back a working demo you can put in front of your team.

One reply from a person, within one business day. No newsletter, no sequence. See our privacy policy.