SKILL.md
Extract Design Language
Extract the complete design language from any website URL. Generates 8 output files covering colors, typography, spacing, shadows, components, breakpoints, animations, and accessibility.
Prerequisites
Ensure designlang is available. Install if needed:
npm install -g designlang
Or use npx (no install required):
npx designlang <url>
Process
- Run the extraction on the provided URL:
npx designlang <url> --screenshots
For multi-page crawling: npx designlang <url> --depth 3 --screenshots
For dark mode: npx designlang <url> --dark --screenshots
- Read the generated markdown file to understand the design:
cat design-extract-output/*-design-language.md
-
Present key findings to the user:
- Primary color palette with hex codes
- Font families in use
- Spacing system (base unit if detected)
- WCAG accessibility score
- Component patterns found
- Notable design decisions (shadows, radii, etc.)
-
Offer next steps:
- Copy
*-tailwind.config.jsinto their project
- Import
*-variables.cssinto their stylesheet
- Paste
*-shadcn-theme.cssinto globals.css for shadcn/ui users
- Import
*-theme.jsfor React/CSS-in-JS projects
- Import
*-figma-variables.jsoninto Figma for designer handoff
- Open
*-preview.htmlin a browser for a visual overview
- Use the markdown file as context for AI-assisted development
Output Files (8)
File
Purpose
*-design-language.md
AI-optimized markdown — the full design system for LLMs
*-preview.html
Visual HTML report with swatches, type scale, shadows, a11y
*-design-tokens.json
W3C Design Tokens format
*-tailwind.config.js
Ready-to-use Tailwind CSS theme
*-variables.css
CSS custom properties
*-figma-variables.json
Figma Variables import format
*-theme.js
React/CSS-in-JS theme object
*-shadcn-theme.css
shadcn/ui theme CSS variables
Additional Commands
- Compare two sites:
npx designlang diff <urlA> <urlB>
- View history:
npx designlang history <url>
Options
Flag
Description
--out <dir>
Output directory (default: ./design-extract-output)
--dark
Also extract dark mode color scheme
--depth <n>
Crawl N internal pages for site-wide extraction
--screenshots
Capture component screenshots (buttons, cards, nav)
--wait <ms>
Wait time after page load for SPAs
--framework <type>
Generate only specific theme (react or shadcn)