Google's design.md for AI Brand Asset Generation
AI Summaries (evaluation playlist)go watch the original →
the gist
Google open-sources design.md markdown format so AI agents generate consistent brand visuals like ads and decks; examples from ClickFlow and Single Grain match their sites exactly.
design.md Format
Google launched design.md, an open-source markdown specification (8600 GitHub stars, via Stitch with Google) that structures visual identity for coding agents. Agents reference the file to produce on-brand landing pages, ads, carousels, and decks with persistent consistency. The format avoids proprietary lock-in from tools like Claude or Figma, working across any agent or model.
Usage Examples
Eric Siu created design.md files for ClickFlow (clickflow.com AEO/SEO tool) and Single Grain (singlegrain.com AI marketing firm). Feeding the ClickFlow design.md to an agent yields assets matching the site's brand guidelines. Single Grain's file replicates its homepage style, including client logos and sections. Agents use these for end-to-end workflows: analyze competitors, ad performance, then iterate assets.
Scaling Impact
Marketing teams scale from 4 manual ad creatives/month to 500 agent-generated ones with high consistency (vs 100 from 6 designers with mixed results). Sales decks shift from 20 generic templates/year (2+ week turnaround) to 1 custom deck/deal in under 10 minutes. Agencies crank case studies; ROI comes from open files others can reuse.
Reusable Repos
Repo 'awesomedesign.md' (66,000 GitHub stars, by Vault Agent) catalogs design.md files from top sites like Intercom and finn.ai. Copy into projects for pixel-perfect UIs; agents pull inspiration (fonts, graphs) and update periodically via Single Brain agents.