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.

Extracted Design System

Color Swatch Palette

Visually grouped colors extracted from styles. Click color to copy hex value.

🎨 Primary & Brand Accent Colors

⚪ Neutral & Grayscale Palette

Typography Hierarchies

Font families, sizes, weights, and line heights parsed from declarations.

Global CSS Variables

Custom properties declared globally. Click value to copy.

Variable Name	Value

Asset Resources

Linked external image backgrounds and web font files.

Developer Integration Exporters

Configurations formatted for fast copying into design systems and configurations.

Tailwind CSS Config Theme

Figma Tokens JSON

AI Agent Overview (DESIGN.md)

🎨

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

With native WebMCP agent hooks, browser assistants can analyze styling attributes programmatically, instantly generating component contexts.

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": "..." }
}

WebMCP Agent Protocol

This page implements the Early Preview community standard for WebMCP (Web Model Context Protocol), enabling browser AI agents to register and call tool functions directly from this 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.

Extract Design Systemsfrom Any Webpage