CSS Minifier
Paste CSS to compress it by stripping comments and whitespace. Runs entirely locally.
Input
LocalOutput
—About CSS Minifier
The CSS Minifier strips comments and unnecessary whitespace from stylesheets to produce a smaller file that renders identically. It targets developers shrinking CSS for production without adding a build pipeline.
Every byte of CSS is downloaded before a page can paint. Minifying locally cuts that weight while keeping your source readable, and it never sends your styles to a third-party server.
Step by step
- Paste the CSS you want to compress into the input panel.
- The minifier removes comments, redundant spaces, and line breaks.
- Review the compact output in the result area.
- Copy it or download the minified stylesheet for deployment.
What it offers
- Comment and whitespace stripping
- Single-line CSS output
- Smaller stylesheet size
- Runs only on your device
Tips for best results
- Keep your readable source in version control and minify only the deployed copy.
- Combine minification with server compression for the biggest transfer savings.
- Minify after you finish editing — compact CSS is hard to change by hand.
Why people use it
Smaller files
Removes comments and whitespace for a lighter download.
Identical rendering
The compressed CSS behaves exactly like the source.
No build step
Useful when you do not have a bundler configured.
Private
Your styles stay in the browser.
Common questions
This runs entirely in your browser
No file or text you enter here is uploaded. Encoding and decoding happen on your device using native browser APIs — close the tab and nothing remains on a server.