CSS Beautifier

Beautify CSS code with consistent indentation and proper formatting. Copy or download the result without sending data anywhere.

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Output
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CSS Beautifier

This CSS Beautifier takes minified, compressed, or poorly indented CSS and reformats it with consistent indentation, proper spacing, and clean line breaks. It makes dense stylesheets readable and easier to maintain.

The beautification runs entirely in your browser using the js-beautify library. Your CSS code never leaves your device, making it ideal for formatting minified stylesheets, inspecting framework CSS, or cleaning up generated styles.

How to use

  1. Paste your minified or messy CSS into the input editor.
  2. Click Beautify CSS to apply indentation and formatting.
  3. View the formatted CSS in the output editor with proper structure.
  4. Use Copy for the clipboard, Download for a .css file, or Clear to reset both editors.

What is CSS beautification?

CSS beautification (also called prettifying or formatting) is the process of reformatting Cascading Style Sheets to follow consistent indentation and spacing rules. It places each property on its own line, adds proper indentation for nested selectors, and ensures braces and semicolons are clearly visible.

Well-formatted CSS is essential for debugging layout issues, understanding specificity conflicts, and maintaining design systems. Beautified CSS makes it easy to scan selectors, spot duplicate rules, and trace the cascade order.

Input notes

The tool accepts any valid CSS input, including modern features like CSS variables, grid and flexbox layouts, media queries, and keyframe animations. It handles nested selectors, pseudo-classes, and vendor prefixes correctly.

Example

Minified CSS becomes readable after beautification:

--- Input (minified) ---
.card{background:#fff;border:1px solid #ddd;padding:16px;border-radius:8px}.card h2{font-size:1.5rem;margin-bottom:8px}

--- Output (beautified) ---
.card {
  background: #fff;
  border: 1px solid #ddd;
  padding: 16px;
  border-radius: 8px;
}

.card h2 {
  font-size: 1.5rem;
  margin-bottom: 8px;
}

MCP integration

MCP (Model Context Protocol) lets AI agents and apps discover and run Coding.Tools utilities for repeatable conversions, formatting, hashing, and generation workflows.

MCP tool name: css-beautifier

MCP endpoint: https://coding.tools/mcp

Call tools/list first. Each tool entry includes inputSchema, outputSchema, and examples so an AI agent or client can build valid arguments without guessing.

For tools/call, read result.content[0].text for the display value and result.structuredContent for machine parsing. Tool-level failures return isError: true; protocol failures return a JSON-RPC error.

Example tools/call request:

curl -s https://coding.tools/mcp \
  -H "Content-Type: application/json" \
  -H "Accept: application/json" \
  -H "MCP-Protocol-Version: 2025-06-18" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"css-beautifier","arguments":{"input":".button{color:white;background:#3366cc;padding:8px 12px;}"}}}'

Most text and data tools accept an input string plus optional options. Browser-only image tools are listed for discovery and return a web UI link when they need browser image APIs.