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Courses/Introduction to Design Systems/Interface Inventory & Eliminating UI Debt/
Exercise #2

Quantifying UI Debt: The Power of Embarrassing Numbers

When design leads tell executives 'Our product looks inconsistent', executives often shrug it off as minor aesthetic nitpicking.

However, when you conduct an interface inventory and present hard quantitative data, leadership acts immediately:

  • 'We found 43 different shades of blue across 8 product screens.'
  • 'We have 29 distinct button styles with 6 different corner radii.'
  • 'Our checkout flow alone imports 5 different date-picker libraries.'
  • 'We load 14 separate web font files, adding 850KB of bloat to page load.'

Framing UI inconsistency as technical debt, maintenance overhead, and conversion risk transforms the design system from an optional aesthetic project into a critical business priority.

Topics

What Is an Interface Inventory?
Quantifying UI Debt: The Power of Embarrassing Numbers
Categorizing Discrepancies: Visual vs Functional
The Consolidation Workshop: Building Cross-Team Consensus
Migration Strategies: The Strangler Fig Pattern
Automating UI Debt Prevention with Linters
Design Linting in Figma: Stopping Debt at the Source
Tracking System Adoption Over Time
Challenge: Formulating an Interface Inventory Action Plan
design

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Interface Inventory & Eliminating UI Debt

Level 5 · Auditing & Multi-Brand Theming

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