Processed locally in your browser
CSS Minifier & Formatter
Minify CSS to shrink file size, or format it back into clean, readable code.
Input CSS
Output
Paste some CSS to minify or format it.
Frequently asked questions
- Is my CSS uploaded anywhere?
- No. Minifying and formatting both happen locally in your browser — your code is never sent to a server.
- What does Minify remove?
- Comments, unnecessary whitespace, and redundant semicolons — without changing how your styles render.
- Will minifying break calc() or url()?
- No. The tool keeps the contents of calc(), url(), and similar functions intact, since removing spaces inside them — like calc(100% - 10px) — would change their meaning.
- What does Prettify do?
- It reformats minified or messy CSS with consistent indentation and one declaration per line, making it easy to read again.