Google announced a major update to Stitch on March 18, introducing what it's calling "vibe design" — a new approach to UI creation that mirrors the "vibe coding" trend in software development. Instead of starting with wireframes, designers describe what they want users to feel or the business objective they're trying to achieve, and the AI generates high-fidelity UI designs from that intent.

A New Design Canvas

The centerpiece of the update is a redesigned infinite canvas that accommodates the full arc of a design project — from early ideation through working prototypes. Inputs can be images, text, or code, and the canvas accepts them all as context for the design agent.

A new Agent Manager tracks progress across parallel design explorations, letting teams run multiple concepts simultaneously without losing their place. When you're ready to test, static screens snap into interactive prototypes with a single click.

DESIGN.md and MCP Export

One of the more technically notable additions is DESIGN.md — an agent-friendly markdown format for exporting and importing design systems. Teams can extract a design system from any URL, save it as DESIGN.md, and apply it to new Stitch projects or share it across coding tools. A new MCP (Model Context Protocol) export option means design systems can plug directly into AI coding agents.

Voice and App Store Assets

The update also adds voice input for describing design changes in real time, and a new App Store asset generator that produces screenshots and promotional graphics directly from existing designs.

Stitch launched last year as a free tool for turning descriptions into editable UI and code. The new version positions it as a full design-to-prototype platform, competing more directly with Figma's AI features and tools like v0 and Lovable.