Design in the real product

Fei Studio lets designers work directly in the live codebase, using real components, constraints, and states instead of static mockups.

Work on the real product with components that ship

Fei Studio lets designers work with the actual product UI components, structure, and patterns. Nothing is recreated or approximated. What you design is built from what already exists in your product.

Own the result

The changes you make become real product code. Fei studio turns your edits, updates and changes into code that fits your product and moves through the normal review and approval flow. Engineers review and refine it, not rebuild it.

Fei Studio empowers the whole team

Including Product Managers, Designers & Engineers

Use cases

• Validate Product Ideas
  Turn early ideas into production-ready changes, release them behind feature flags, and learn from real user behavior before committing fully.
• Prototype With Real Code
  Designers prototype new experiences directly in the product environment instead of relying only on static mockups.
• Accelerate Feature Delivery
  Move from product requests, screenshots, or tickets to production-aligned pull requests faster by reducing handoffs.
• Improve Existing Features
  Refine existing product experiences and workflows without rebuilding them from scratch.
• Refactor Legacy Interfaces
  Modernize legacy UI surfaces and migrate them toward current component standards while preserving the structure of the real codebase.
• Rapid Product Iteration
  Explore multiple variations of product flows quickly inside the real product environment to accelerate discovery and refinement.
• Stakeholder Demos
  Create realistic demos using the real product environment instead of static mockups for leadership or customer conversations.
• Design System Alignment
  Generate product updates that reuse existing components and patterns to maintain consistency across the application.
• Turn Support Feedback Into Product Changes
  Translate customer feedback, bug reports, and support tickets into concrete product improvements aligned with the codebase.
• Explore UX Improvements
  Experiment with navigation, layout, and interaction improvements directly in the real product environment.
• Build Enterprise Customizations
  Create tailored product experiences required for enterprise customers while keeping changes aligned with the existing architecture.
• Test Feature Variations
  Generate alternative versions of product flows and interfaces to explore new directions before committing to implementation.

Why teams choose Fei Studio

Fei Studio improves the designer-to-developer handoff by generating product changes aligned to the existing system, rather than handing engineering a purely static design artifact.

• More realistic prototyping grounded in real components
• Faster iteration without waiting for engineering cycles
• Fewer translation gaps between design and implementation
• Product changes built on actual components and standards
• Easier collaboration with PMs and engineers
• Deliverables that engineering can actually push to production

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