Free Online Tool
CSS Minifier
Remove comments and unnecessary whitespace from CSS.
CSS Minifier lets you remove comments and unnecessary whitespace from CSS. Paste your code below and the minified result appears immediately — no waiting, no upload, and nothing saved anywhere.
How to use CSS Minifier
- Paste your original code into the input box.
- Review the minified result generated by the tool.
- Copy the minified output, or download it as a .txt file.
- Use Clear to start over with new code.
Key features
- Minifies your input by removing unnecessary whitespace and formatting.
- 100% private — your code stays in your browser.
- Free to use, with no sign-up and no daily limit.
- Handles both short snippets and long files well.
Questions
Frequently asked questions
Is CSS Minifier free to use?
Yes — CSS Minifier is completely free, with no sign-up, no trial period, and no hidden limits.
Is my text uploaded anywhere when I use CSS Minifier?
No. CSS Minifier runs entirely in your browser using JavaScript. Your text is processed on your own device and is never sent to a server.
Can I use CSS Minifier on my phone?
Yes. CSS Minifier works in any modern browser, including on mobile devices, with no app to install.
Is there a limit to how much text I can use?
There's no artificial limit. Because everything runs in your browser rather than on a server, CSS Minifier can generally handle as much text as your device can comfortably process.
Handy to know
Popular tools
Explore the rest of the toolbox
121 free browser-based text tools — no sign-up, nothing ever uploaded.
View all tools