stitch-ui-design – Design & UI skill for AI agents

Stitch UI Design Prompting

Expert guidance for crafting effective prompts in Google Stitch, the AI-powered UI design tool by Google Labs. This skill helps create precise, actionable prompts that generate high-quality UI designs for web and mobile applications.

Prototype and privacy boundaries

Confirm actual account capabilities, export options and data terms from current official documentation before using product-specific steps. Use only authorized reference images/assets and synthetic or redacted data; uploading screenshots can expose confidential UI, personal records and credentials. Prompted functional states are visual specifications, not implemented authentication, payment, validation or accessibility evidence. Inspect exported code/dependencies and test semantic structure, keyboard/focus, zoom/reflow, contrast and reduced motion on real devices before production. The example logos, testimonials, ratings, metrics and security badges are placeholders and must never be published as factual claims without evidence/permission. Export/share/deploy and external account changes require authorization.

What is Google Stitch?

Google Stitch is an experimental AI UI generator whose available models/features depend on the current product version that transforms text prompts and visual references into functional UI designs. It supports:

• Text-to-UI generation from natural language prompts
• Image-to-UI conversion from sketches, wireframes, or screenshots
• Multi-screen app flows and responsive layouts
• Export to HTML/CSS, Figma, and code
• Iterative refinement with variants and annotations

Core Prompting Principles

1. Be Specific and Detailed

Generic prompts yield generic results. Specific prompts with clear requirements produce tailored, professional designs.

Poor prompt:

Create a dashboard

Effective prompt:

Member dashboard with course modules grid, progress tracking bar, 
and community feed sidebar using purple theme and card-based layout

Why it works: Specifies components (modules, progress, feed), layout structure (grid, sidebar), visual style (purple theme, cards), and context (member dashboard).

2. Define Visual Style and Theme

Always include color schemes, design aesthetics, and visual direction to avoid generic AI outputs.

Components to specify:

• Color palette (primary colors, accent colors)
• Design style (minimalist, modern, playful, professional, glassmorphic)
• Typography preferences (if any)
• Spacing and density (compact, spacious, balanced)

Example:

E-commerce product page with hero image gallery, add-to-cart CTA, 
reviews section, and related products carousel. Use clean minimalist 
design with sage green accents and generous white space.

3. Structure Multi-Screen Flows Clearly

For apps with multiple screens, list each screen as bullet points before generation.

Approach:

Fitness tracking app with:
- Onboarding screen with goal selection
- Home dashboard with daily stats and activity rings
- Workout library with category filters
- Profile screen with achievements and settings

Review the intended screen list before generation; do not rely on the product to supply a confirmation gate.

4. Specify Platform and Responsive Behavior

Indicate whether the design is for mobile, tablet, desktop, or responsive web.

Examples:

Mobile app login screen (iOS style) with email/password fields and social auth buttons

Responsive landing page that adapts from mobile (320px) to desktop (1440px) 
with collapsible navigation

5. Include Functional Requirements

Describe interactive elements, states, and user flows to generate more complete designs.

Elements to specify:

• Button actions and CTAs
• Form fields and validation
• Navigation patterns
• Loading states
• Empty states
• Error handling

Example:

Checkout flow with:
- Cart summary with quantity adjusters
- Shipping address form with validation
- Payment method selection (cards, PayPal, Apple Pay)
- Order confirmation with tracking number

Prompt Structure Template

Use this template for comprehensive prompts:

[Screen/Component Type] for [User/Context]

Key Features:
- [Feature 1 with specific details]
- [Feature 2 with specific details]
- [Feature 3 with specific details]

Visual Style:
- [Color scheme]
- [Design aesthetic]
- [Layout approach]

Platform: [Mobile/Web/Responsive]

Example:

Dashboard for SaaS analytics platform

Key Features:
- Top metrics cards showing MRR, active users, churn rate
- Line chart for revenue trends (last 30 days)
- Recent activity feed with user actions
- Quick action buttons for reports and exports

Visual Style:
- Dark mode with blue/purple gradient accents
- Modern glassmorphic cards with subtle shadows
- Clean data visualization with accessible colors

Platform: Responsive web (desktop-first)

Iteration Strategies

Refine with Annotations

Use Stitch's "annotate to edit" feature to make targeted changes without rewriting the entire prompt.

Workflow:

1. Generate initial design from prompt

2. Annotate specific elements that need changes

3. Describe modifications in natural language

4. Request a targeted change, then inspect the full result for unintended changes

Example annotations:

• "Make this button larger and use primary color"
• "Add more spacing between these cards"
• "Change this to a horizontal layout"

Generate Variants

Request multiple variations to explore different design directions:

Generate 3 variants of this hero section:
1. Image-focused with minimal text
2. Text-heavy with supporting graphics
3. Video background with overlay content

Progressive Refinement

Start broad, then add specificity in follow-up prompts:

Initial:

E-commerce homepage

Refinement 1:

Add featured products section with 4-column grid and hover effects

Refinement 2:

Update color scheme to earth tones (terracotta, sage, cream) 
and add promotional banner at top

Common Use Cases

Landing Pages

SaaS landing page for [product name]

Sections:
- Hero with headline, subheadline, CTA, and product screenshot
- Social proof with customer logos
- Features grid (3 columns) with icons
- Testimonials carousel
- Pricing table (3 tiers)
- FAQ accordion
- Footer with links and newsletter signup

Style: Modern, professional, trust-building
Colors: Navy blue primary, light blue accents, white background

Mobile Apps

Food delivery app home screen

Components:
- Search bar with location selector
- Category chips (Pizza, Burgers, Sushi, etc.)
- Restaurant cards with image, name, rating, delivery time, and price range
- Bottom navigation (Home, Search, Orders, Profile)

Style: Vibrant, appetite-appealing, easy to scan
Colors: Orange primary, white background, food photography
Platform: iOS mobile (375px width)

Dashboards

Admin dashboard for content management system

Layout:
- Left sidebar navigation with collapsible menu
- Top bar with search, notifications, and user profile
- Main content area with:
  - Stats overview (4 metric cards)
  - Recent posts table with actions
  - Activity timeline
  - Quick actions panel

Style: Clean, data-focused, professional
Colors: Neutral grays with blue accents
Platform: Desktop web (1440px)

Forms and Inputs

Multi-step signup form for B2B platform

Steps:
1. Account details (company name, email, password)
2. Company information (industry, size, role)
3. Team setup (invite members)
4. Confirmation with success message

Features:
- Progress indicator at top
- Field validation with inline errors
- Back/Next navigation
- Skip option for step 3

Style: Minimal, focused, low-friction
Colors: White background, green for success states

Design-to-Code Workflow

Export Options

Stitch provides multiple export formats:

1. HTML/CSS - Clean, semantic markup for web projects

2. Figma - "Paste to Figma" for design system integration

3. Code snippets - Component-level exports for frameworks

Best Practices for Export

Before exporting:

• Verify responsive breakpoints
• Check color contrast for accessibility
• Ensure interactive states are defined
• Review component naming and structure

After export:

• Refactor generated code for production standards
• Add proper semantic HTML tags
• Implement accessibility attributes (ARIA labels, alt text)
• Optimize images and assets
• Add animations and micro-interactions

Anti-Patterns to Avoid

❌ Vague Prompts

Make a nice website

✅ Specific Prompts

Portfolio website for photographer with full-screen image gallery, 
project case studies, and contact form. Minimalist black and white 
aesthetic with serif typography.

---

❌ Missing Context

Create a login page

✅ Context-Rich Prompts

Login page for healthcare portal with email/password fields, 
"Remember me" checkb

… (full content is in the download package)