CSS Minifier

Minification strips everything from CSS that browsers ignore — comments, indentation, line breaks, redundant spaces, the final semicolon in each block — leaving byte-identical behavior in a smaller file. Smaller CSS means faster first paint, because stylesheets block rendering: the browser will not draw the page until the CSS arrives. Typical hand-written stylesheets shrink 20–40%.

Paste your CSS and the minified version appears instantly, alongside the numbers that make the result concrete: exact bytes before, bytes after, and percentage saved. One engineering detail separates this from regex-naive minifiers: string literals are protected before any transformation, so quoted values — content: " — ", url("my file.png"), font names with spaces — pass through untouched instead of getting their internal whitespace mangled. Comments starting with /*! (the license-comment convention) are preserved, as build tools expect.

Honest guidance on when to use it: for build pipelines, your bundler's minifier (which also does aggressive value-level optimization) is the right tool — this one is for everything else: the hand-edited stylesheet on a small site, CSS pasted into a CMS or theme customizer, an email template, a quick check of how much a file would shrink, or cleaning a snippet before embedding it. Your CSS never leaves the browser.