Smaller stylesheets, readable formatting, and a live class preview sandbox — all instant, right in your browser.
// Output will appear here
Applies the class name(s) below — using the CSS from the editor above — to sample text, an image, and an SVG icon, so you can see the effect before shipping it.
Saved only on this device — never uploaded anywhere.
@media./* ... */ blocks in the minified output — useful for license headers.#aabbcc → #abc).0px → 0) since they have no effect at zero.No. Minification only removes characters browsers don't need — whitespace, comments, and redundant syntax. The visual result stays identical.
No. Parsing, validation, minifying, beautifying, and the preview sandbox all run locally in your browser. Nothing is sent to or stored on our servers.
Minifying permanently strips unneeded characters from the source before deployment. Compression (like Gzip or Brotli) shrinks the file temporarily in transit. Production sites typically use both together.
Yes. Toggle "Keep comments when minifying" before you click Minify if you need to preserve license headers or notes.
It keeps each rule readable on its own lines but skips the extra indent levels nested at-rules (like @media) would normally add — handy for diffs and some linters.
It renders your CSS inside an isolated preview frame and applies the class name(s) you type to sample text, an image, and an SVG icon — or your own uploaded image and custom text — so you see the effect instantly.
You can, but it isn't recommended. Keep a readable source file for development and generate a fresh minified file for production each time.
Not directly, but faster-loading pages improve performance metrics that can indirectly support SEO.
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