Extract Design Systems
from Any Webpage

Analyze public stylesheets, extract custom variables, organize color palettes, and export developer integrations in seconds. Built for designers, developers, and AI agents.

CSS Extraction Tool Settings
Enter the absolute HTTP/HTTPS URL of the website you wish to parse.
🎨

For Designers

Harvest brand visual colors, typography scales, and assets. Export Figma-compatible design tokens to speed up design audits.

💻

For Developers

Instantly convert parsed stylesheet custom variables into configured Tailwind CSS themes. Copy values instantly without digging into DevTools.

🤖

For AI Agents & IDEs

Integrate directly with standard MCP (Cursor, Claude Desktop) and WebMCP. AI agents can extract styling attributes programmatically instantly.

API Documentation

css-extractor.com provides a stateless, CORS-enabled REST API endpoint for scripting design audits.

POST /api/extract
Content-Type: application/json

{
  "url": "https://example.com"
}

// Response JSON Schema:
{
  "colors": [{ "value": "#6366f1", "count": 24 }],
  "typography": {
    "fontFamilies": ["Outfit, sans-serif"],
    "fontSizes": ["16px"],
    "fontWeights": ["400", "600"],
    "lineHeights": ["1.5"]
  },
  "variables": [{ "name": "--brand-primary", "value": "#6366f1" }],
  "assets": [{ "type": "image", "url": "https://example.com/bg.png" }],
  "exports": { "tailwind": "...", "figma": "...", "markdown": "..." }
}

Standard MCP Server (IDEs)

Run design audits in your coding workspace. You can connect Cursor, VS Code, or Claude Desktop directly to our hosted SSE transport server endpoint.

Connection Configuration

{
  "mcpServers": {
    "css-extractor": {
      "url": "https://css-extractor.com/api/mcp/sse"
    }
  }
}

WebMCP Agent Protocol (Browser)

This page implements the preview community standard for WebMCP, allowing browser-native AI sidebars to register and call page tools directly in your active tab.

Ensure chrome://flags/#enable-webmcp-testing is enabled in your browser to inspect and trigger the declarative extract-css tool.

Frequently Asked Questions

Common answers regarding extraction mechanics, WAF blocks, and WebMCP integrations.

What is css-extractor.com?

css-extractor.com is a free, edge-powered design utility that crawls target website stylesheets or processes raw CSS code to extract structured design tokens (including grouped color palettes, typography scales, custom variables, and assets).

Why does extraction fail on some websites?

Some websites protect their assets using Web Application Firewalls (WAF) like Akamai, Cloudflare WAF, or Imperva, which block serverless/automated crawling requests. For these sites, you can simply open browser DevTools, copy the stylesheet rules, and use the "Paste CSS Stylesheet" tab.

How does color clustering work?

The parser normalizes all colors (RGB/RGBA, HSL, shorthand hex) into 6-digit hex strings. It then clusters visually similar colors using Euclidean distance in RGB color space to group primary brand colors and grayscales together, filtering out noise.

What is the WebMCP Protocol?

WebMCP (Web Model Context Protocol) is an open community specification that allows browser-based AI agents and assistants to register, inspect, and invoke local tool functions directly from web pages.

Is my pasted CSS code secure?

Yes, css-extractor.com runs entirely on the Cloudflare edge and is completely stateless. We do not store, log, or track any URLs parsed or CSS stylesheets pasted on this application.