Developer
CSS minifier
Minify CSS to shrink file size, with before-and-after savings.
Free to use · Runs in your browser · No signup
This tool works in your browser. Enable JavaScript to select files and create your download.
How to use CSS minifier
- Paste the CSS you want to minify.
- Review the minified output and size savings.
- Copy or download the minified stylesheet.
What you need
Nothing to upload. Type or paste directly into the tool; results update as you go.
Your result
Minified CSS and the size saved.
Before you start
Comments and whitespace are removed and safe optimizations applied. Keep your original file for editing; minified CSS is hard to read.
Questions about CSS minifier
How do I use CSS minifier?
Paste the CSS you want to minify. Review the minified output and size savings. Copy or download the minified stylesheet.
What does CSS minifier produce?
Minified CSS and the size saved.
What should I check before using CSS minifier?
Comments and whitespace are removed and safe optimizations applied. Keep your original file for editing; minified CSS is hard to read.
Is what I type sent anywhere?
No. The calculation runs in your browser, and the text or numbers you enter are not uploaded or stored.