Stitch 3.0 by Google - Generate and iterate UI screens with AI on a live canvas

The part of this Stitch update that changes the workflow is the DESIGN.md import, and it doesn't get enough attention in the headline features.

Generative design tools have a consistent blind spot: they ignore everything you've already built. You prompt them, get a screen that looks nothing like your product, and spend the next hour reconciling tokens and components. Stitch now reads your existing codebase, Figma file, or live website before it generates anything, extracting your design language via an open standard called DESIGN.md. The output starts from your context, not from scratch.

Paired with the rest of the I/O update:

• Streaming generation with live steering before the screen is finished

• In-place edits for element-level changes without full regeneration

• HTML-native canvas with real animation and interactive state previews

• MCP-based codebase sync to push visual edits back to your code via an agent

• Export to Figma, Netlify, Lovable, and Bolt in one click

Built for developers and product builders using AI coding agents who need a design layer that connects to their codebase rather than creating a parallel one.

Free in Google Labs with generation limits. Give it a go at stitch.withgoogle.com.

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I like how Stitch MCP works with Antigravity - I can finally get consistent design done.

Already used Stitch for one of my websites and honestly had zero UI UX experience going in. The results were good enough that people actually complimented the design without knowing it was AI generated. Version 3.0 with live canvas and in-place edits sounds even better. This is the kind of tool that makes you look like you know what you are doing even when you don’t.

tried a few generations and the speed is impressive. I can see this being genuinely useful for rough ideation, especially when you want to explore layouts quickly even for zero UI/UX experience user.

It's great to see stitch becoming better. I started my career from design and started using stitch time after time, since it launched.
I really liked the tool until it was on Gemini Pro 3.0 and when it started using 3.1, there were issues and inconsistencies and that's when i moved to claude design.

I'll give it a go again and hope for the best, congrats to the whole team!

I cancelled hiring a web designer and a front-end developer- but I do have my visual identity and brand assets carefully and intentionally designed

Curious how Hatter handles component consistency when the sketch input is ambiguous — does it infer a design system automatically, or does the user need to define tokens upfront?

Did you remove the ability to make animations?

我只需描述 “一款极简记账 APP，主色调为薄荷绿，强调轻松、无压力的理财体验”，Stitch 就能生成符合整体氛围的完整界面，包括色彩搭配、字体选择和交互逻辑。上周我用它为客户快速生成 3 种不同风格的原型（简约风、活泼风、专业风），客户当场选定了方案，节省了至少 3 轮沟通时间