Minify CSS online by stripping comments, whitespace, and redundant units, shrinking stylesheets to speed up page load.
Beautifying restores indentation, selector alignment, and line breaks so stylesheets are readable. Minifying strips comments and redundant whitespace to shrink transfer size. Selectors, cascade order, and declared values stay the same unless you opt into a value optimization such as Optimize Hex Colors.
This workspace reports brace balance, unclosed comments or strings, and suspicious declarations with line and column. That is not a full W3C specification check. CSS can format cleanly and still be ignored by a browser, or contain vendor-specific syntax this parser does not treat as invalid.
Minify collapses whitespace around braces and semicolons while keeping required spaces in descendant selectors and calc() expressions. Optional optimizations shorten #ffffff to #fff and 0px to 0. Trailing semicolons before a closing brace are dropped. Rule order is never rearranged.
The inspector lists selectors, declarations, custom properties, media queries, keyframes, and other at-rules from the parsed stylesheet. Live preview injects your CSS into a sandboxed iframe with sample markup so page chrome is never restyled.
Formatting, minification, search, and file import run in your browser. Companion tools include the <a href="/html-formatter" class="text-brandBlue-400 hover:underline font-semibold">HTML Formatter</a>, <a href="/json-formatter" class="text-brandBlue-400 hover:underline font-semibold">JSON Formatter</a>, <a href="/yaml-formatter" class="text-brandBlue-400 hover:underline font-semibold">YAML Formatter</a>, <a href="/sql-formatter" class="text-brandBlue-400 hover:underline font-semibold">SQL Formatter</a>, <a href="/regex-tester" class="text-brandBlue-400 hover:underline font-semibold">Regex Tester</a>, and <a href="/jwt-decoder" class="text-brandBlue-400 hover:underline font-semibold">JWT Decoder</a>.
Quick answers about how this tool works.
Plain-language explainers that sit next to this tool.
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