How to Extract Design Tokens from a Website
Extracting design tokens from an existing website gives you a reusable design specification for AI agents, documentation, and design system migration.
Key takeaways
- Design tokens can be extracted from any website CSS, design tools, or rendered elements.
- Extracted tokens include colors, typography, spacing, border radii, and shadows.
- Saved as a structured file, extracted tokens become reusable AI design context.
Extract from CSS and developer tools
Browser DevTools reveal computed styles for any element. Inspect the color, font-family, font-size, padding, margin, border-radius, and box-shadow values. Cross-reference similar elements to identify the consistent values that form design tokens.
Extract from design tools
If you have access to the Figma or Sketch file, tokens can be extracted from design components, color styles, and text styles directly. Tools like Figma Tokens export them as structured JSON.
Save as DESIGN.md context
Once extracted, organize the tokens into a DESIGN.md file: color palette, typography scale, spacing system, and component patterns. This becomes the design context that AI agents use to match the existing design system.
How this becomes an OmniSaver record
The practical output of this guide is not another long note. It is a compact record with enough structure to help you act later: the source, the situation, the important fields, the reason it mattered, and the next step.
For AI Context, that means choosing the smallest Saver that matches the moment and saving only the fields that will help you compare, repeat, prove, decide, or reuse the context later.
A simple workflow
Start by saving one real example while the context is fresh. Review it after the outcome is visible. Compare it with the next similar record. Reuse the best version when the situation appears again.
This save, review, compare, reuse loop is the reason OmniSaver uses tiny apps instead of one giant database. Each Saver keeps the record close to the behavior it supports.
Practical template
- Record
- WebpageSaver record
- Save
- The key fields, source, date, and why it mattered
- Review
- What changed, what worked, and what to try next
- Reuse
- Bring the record back into the next decision or workflow