Terms of Service
About this tool
This free browser utility minifies CSS code locally and lets you save a separate copy. Use it only if you agree to these terms.
Your responsibility
You retain ownership of your files. Selecting a file does not grant permission to publish it. Only process code you are entitled to use. Review and test the output in your own environment before publishing; keep your original and a backup.
Limits
CSSO removes whitespace and applies local CSS optimizations; cross-rule restructuring is disabled. /*! license comments are retained. CSS parsers recover from some malformed but syntactically tolerated declarations; review the output and test your stylesheet in the target browser. The tool does not resolve @import, preprocess Sass/Less, or bundle assets. Large files may briefly occupy the browser main thread. Only UTF-8 source files are supported; downloads are UTF-8.
Privacy
Selected code is processed locally as described in the Privacy Policy. Your original is not overwritten.
Availability
The service is provided “as is” and “as available,” without a guarantee of compatibility or uninterrupted operation. Nothing here limits rights that cannot lawfully be excluded.
Components
This tool includes CSSO and supporting packages under open-source licenses. See component license notices.
Changes
Features and these terms may change; updated terms apply to later use.