Beautify と prettify CSS code instantly 無料のonline CSSビューティファイアーで. Clean indentation, readable structure, と proper formatting. 100%クライアントサイド.
CSS ビューティファイアー is a free online tool that transforms messy, minified, or poorly formatted CSS code into clean, readable, と properly indented stylesheets. Whether you inherited a compressed CSS file from a build process, downloaded a third-party stylesheet, or need to clean up your own code, this tool instantly formats it with professional standards. すべて processing happens entirely in your browser — データはサーバーに送信されません, ensuring your code stays private と secure.
CSS beautification (also called prettification or formatting) is the process of restructuring CSS code to make it readable と consistent. It adds proper indentation, spacing, line breaks, と grouping while preserving the exact styles と functionality.
いいえ. Theビューティファイアー only changes whitespace, indentation, と formatting. It does not alter any CSS values, selectors, properties, or media queries. The rendered output in the browser will be identical before と after beautification.
This tool is designed for standard CSS. While it may handle some SCSS features like nesting, variables, と mixins are not supported. For full SCSS/Sass formatting, use a dedicated preprocessor tool like Prettier or the Sass CLI.
Beautifying makes CSS readable by adding indentation, line breaks, と spacing. Minifying does the opposite — it removes all unnecessary whitespace to create the smallest possible file size for production. This tool supports both: click "Beautify" for readability, "Minify" for performance.
Alphabetical property sorting improves code consistency across team members, makes it easier to spot missing properties, と simplifies code reviews. It is a common practice in large CSS codebases と design systems.
はい, completely. すべて CSS processing happens inside your browser using JavaScript. いいえ code is sent to any server, stored in any database, or logged anywhere. You can verify this by checking your browser's network tab — no outbound requests are made when you process CSS.
はい. Theビューティファイアー fully supports CSS custom properties (--variable-name), CSS Grid, Flexbox, CSS nesting, container queries, と other modern CSS features. Your cutting-edge CSS code will be formatted correctly.
はい. After beautifying, click the "ダウンロード" button to save your formatted CSS as a .css file with a timestamp in the filename. This makes it easy to keep track of multiple versions.