CSS downloaded from the web or produced by build tools is often minified into a single line that is extremely hard to read and debug. CSS beautification automatically restores indentation and line breaks, revealing the hierarchical structure of selectors, properties, and nested rules (such as @media, @keyframes), dramatically improving readability and maintainability.
• Auto Formatting: Recognizes { } ;, strings, and comments, then auto-indents by nesting level. Supports @media, @keyframes, @supports, @font-face, and other at-rules.
• Custom Indentation: Choose between 2 spaces, 4 spaces, or Tab to match your team's code style.
• Selector Sorting: Reorders top-level CSS rules alphabetically for easier scanning and comparison.
• Property Sorting: Arranges declarations within each block alphabetically by property name for a cleaner, more consistent codebase.
• Comment Preservation: Retains /* ... */ comments, including /*! ... */ important comments, ensuring copyright and explanatory notes are not lost.
• Use the beautified version for development and debugging; use the minified version for production to reduce file size.
• Selector sorting changes the physical order of rules and may affect cascade priority for selectors with equal specificity. Use it during development; verify carefully before deploying.
• Pair this tool with our "CSS Minifier" to switch easily between beautified and minified versions.
This tool is designed for formatting CSS and is intuitive to use with no configuration required. Here is a detailed walkthrough:
Step 1: Input your CSS. Paste or type the CSS code you want to format into the "Input CSS Code" textarea. The tool supports standard CSS of any length, including minified single-line code, irregular code copied from the web, and complex code with nested rules like @media and @keyframes.
Step 2: Choose options. In the options area, select your preferred indentation (2 spaces, 4 spaces, or Tab). If you want to organize code alphabetically, check "Sort selectors" and/or "Sort properties". Enable "Live preview" and the tool will automatically format as you type.
Step 3: Format. Click "✨ Format (Beautify)" and the tool will parse the CSS structure and output indented, line-broken code. The stats area shows character count, byte count, and size change before and after formatting.
Step 4: Copy or download. Once processing is complete, click "Copy Result" to copy the formatted code to your clipboard, or "Download as .css" to save it locally. You can also click "Result to Input" to move the output back to the input area for further processing.
Front-end development and debugging: When maintaining large projects or inheriting code from others, CSS files are often inconsistently formatted. This tool can unify code style in seconds, making nested relationships clear and reducing the cost of understanding and debugging. Property sorting also helps team members quickly locate specific style properties.
Third-party code review: When auditing external CSS (such as third-party plugins or theme libraries), you often receive minified code. This tool's beautify feature instantly restores structure, making it easy to understand logic, spot potential conflicts, and diagnose issues.
Teaching and learning: For CSS beginners, well-formatted code is easier to understand when studying cascade, inheritance, and selector specificity. This tool can quickly format any CSS example found online and help you develop good coding habits.
CSS Beautify vs Minify: CSS beautification adds whitespace to improve readability (developer experience). CSS minification removes redundant whitespace to reduce file size (performance). They are complementary—beautify during development, minify before production. This tool focuses on beautification; pair it with a CSS minifier for the reverse operation.
Source Maps and Debugging: Production environments usually use minified CSS, making debugging difficult. Modern build tools support Source Maps that map compressed code back to the original file. We recommend keeping .css.map files in your build process for direct debugging in browser DevTools.
CSS Preprocessors: This tool is designed for standard CSS. If you use Sass, Less, or Stylus, compile to standard CSS first, then use this tool for formatting. Nested selector syntax (like .parent { .child { ... } } in non-standard nesting) is not supported.
No. CSS beautification only adds indentation and line breaks without modifying any rules, property names, or values. The styling remains identical before and after formatting.
Selector sorting rearranges CSS rules alphabetically. Because of CSS cascading behavior, the order of selectors with equal specificity can affect final priority. We recommend using this feature during development and debugging only; verify carefully before deploying to production.
This tool supports three indentation styles: 2 spaces, 4 spaces, and Tab. You can choose the one that matches your team's code style or personal preference.
Property sorting arranges declarations within each selector block alphabetically by property name. This makes the code more consistent and easier to scan, without changing any styling semantics.
No. This is a pure frontend application. All processing happens locally in your browser and no data is ever uploaded to a server, so you can safely process sensitive stylesheet code.