| name | design-extract |
| description | Extract a public website's design system when a task needs evidence about its colors, typography, spacing, radii, shadows, components, or Tailwind tokens. |
Design Extract
Extract any website's design system from its public URL. No login, no API key, no Figma.
When to use
- User pastes a URL and wants to understand its visual design
- User wants to replicate a site's look and feel
- User asks "what design system does X use?"
- User wants a DESIGN.md for AI context
- User wants to match an existing site's tokens in their own project
How it works
- Fetch the URL's HTML and all linked stylesheets
- Parse CSS for: custom properties, colors, fonts, spacing, radii, shadows
- Send extracted raw data to Claude for structured synthesis
- Output a
DESIGN.md with: color system, typography, spacing, borders, component patterns, Tailwind config sketch
Usage
memi design-doc https://linear.app
memi design-doc https://stripe.com --spec
memi extract https://vercel.com
design_doc({ url: "https://linear.app" })
Output format
The DESIGN.md contains:
- Color System -- palette with semantic names (primary, bg, fg, muted, accent)
- Typography -- font stacks, size scale, weight usage
- Spacing -- scale (4px/8px grid or other rhythm)
- Borders & Surfaces -- radii, shadows, border styles
- Component Patterns -- inferred from DOM (buttons, cards, inputs, nav)
- Tailwind Config Sketch -- partial
tailwind.config.js with extend values
Success criteria
- Extraction completes in under 30 seconds for any public URL
- Output contains at least 10 distinct design tokens
- Tailwind config sketch is valid JavaScript
- DESIGN.md is immediately usable as AI prompt context
Limitations
- Does not work on pure client-side rendered apps (CSR) that inject all styles via JS at runtime
- Works on: static sites, SSR (Next.js, Remix, SvelteKit), and any site that serves CSS in
<link> or <style> tags
