Css Minifier
Free online Css Minifier tool.
About Css Minifier
Free online Css Minifier tool.
CSS Minifier shrinks your style sheets without changing how they look. Paste a stylesheet or upload the contents of a file, and the tool removes comments, collapses whitespace, drops redundant zeros and shortens what it safely can, then shows the original size, the minified size and the percentage saved. Side by side panels let you scan the output before copying it, so you can confirm nothing broke. The minifier follows standard syntax rules, including at-rules and media queries, and it warns when a stray bracket or quote would make the result invalid. Front end developers run it before deployment to cut payload, WordPress users paste the result into a custom stylesheet, and students use it to see how much of a file is really whitespace. CSS Minifier works in your browser and is free.
How to Use Css Minifier
- Paste your code, markup or configuration into the editor.
- Choose the output format or options offered.
- The formatted result updates live.
- Copy or download the finished code.
Key Features
- Clean, consistently formatted output ready to paste.
- Supports the common formats used in web development.
- One-click copy and download — no build step required.
Frequently Asked Questions
Is the CSS Minifier safe for production stylesheets?
Yes, it only performs changes that keep the rendered result identical, such as removing comments, trimming whitespace and normalising short colour and length values. It does not rename your classes or reorder rules, because either could change the cascade. If the input contains a syntax error, the tool points at the offending line instead of returning broken output.
Is Css Minifier free to use?
Yes. Css Minifier is completely free with unlimited use — no account, download or payment required.
Is my data uploaded to a server?
No. Css Minifier runs entirely in your browser. Your inputs are never sent to our servers or stored anywhere.
Does Css Minifier work on mobile?
Yes. The interface is fully responsive and works in any modern browser on Android, iPhone, tablets and desktops.