Minify for production only
Work in the readable file and minify a copy for your live site.
CSS Minifier & Beautifier
Shrink stylesheets for faster pages, or turn a minified stylesheet back into readable code. Comments and whitespace are removed safely, without touching strings or media query logic.
- 100% free
- No sign-up
- Runs in your browser
How to use
How to use the CSS Minifier & Beautifier
- Paste your CSS.
- Choose Minify to compress it or Beautify to format it.
- Check the size saving.
- Copy or download the result.
Private by design. Your code and data are processed in your browser. Nothing is uploaded, logged or stored, so it is safe for API responses, configs and other internal data.
About this tool
How CSS minification works
A minified stylesheet removes comments, line breaks and spaces that browsers ignore, and drops the last semicolon in each rule. The CSS works exactly the same, just with fewer bytes to download and parse.
This minifier is deliberately careful. It never changes the inside of strings, keeps the spaces media queries and calc() expressions need, and preserves important comments that start with /*! such as licence notices. The beautifier does the reverse, putting each declaration on its own line with consistent indentation.
Good to know
CSS tips
Remove unused CSS first
Deleting styles you no longer use saves far more than minifying.
Keep licence comments
Comments starting with /*! are kept automatically.
Beautify to debug
Format a third-party minified file to understand it.
FAQ
CSS Minifier & Beautifier FAQs
Will minifying break my CSS?
No. Only characters the browser ignores are removed.
Does it rename classes or merge rules?
No. It keeps your selectors and rules exactly as written, which keeps it safe.
Can I format minified CSS?
Yes. Choose Beautify to make it readable.
Is my code uploaded?
No. Everything runs in your browser.
Need extra development capacity?
Hire dedicated developers from iCreativez who work as part of your team.