Replit Design is an AI-powered design tool that lets users create visuals, landing pages, posters, and social posts by describing what they want. It features Ambient Intelligence, which suggests variations and progressions that can be accepted in a single click. Users can import URLs, Figma files, or screenshots to recreate designs, and a built-in design system ensures brand consistency across all outputs. The tool includes a template library powered by Mobbin and supports starting projects from scratch or from pre-built templates.