Yes — completely free, no sign-up, unlimited use.
Comments, unnecessary whitespace, the last semicolon in each rule and units on zero values (0px → 0). Important /*! comments are preserved.
Yes — minification only removes characters that don’t affect rendering. Your styles behave identically.
No. Minification runs entirely in your browser — nothing you paste ever leaves your device.
Yes — the Download .css button saves it as style.min.css, ready to deploy.
