CSS Minifier
Strip whitespace and comments to ship smaller stylesheets.
Runs entirely in your browser - your files are never uploaded
What is CSS Minifier?
CSS Minifier is a free, web-based utility designed for instant, local developer tools tasks. It allows users to compute, format, convert, or edit data directly in their browser without installing software or registering an account.
- 100% Free & Unlimited Usage
- 0% File Uploads (100% Client-Side Privacy)
- Instant Real-Time Calculations
- Mobile, Tablet & Desktop Compatible
How to use CSS Minifier
Select or Enter Input
Provide your source file or type your values into CSS Minifier.
Configure Settings
Adjust parameters, formatting options, or units in real-time.
Get Instant Output
Download the final processed file or copy the generated output.
About the CSS Minifier
Every byte of CSS blocks the first paint of your page. This minifier removes comments, collapses whitespace, drops the final semicolon in each rule block and shortens zero units, giving you a stylesheet that behaves identically but downloads faster.
The whole process runs in your browser, so unreleased design systems and client stylesheets never touch a server. Paste your CSS, read the savings counter, then copy or download the result.
Frequently asked questions
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