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loading-states-and-perceived-performance

Spinners, skeletons and staggered reveals that manage wait times. Use when designing loading states, async data or the feel of a slow interface.

skills/loading-states-and-perceived-performance/SKILL.md

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# Loading States and Perceived Performance

Users don't mind waiting as much if they understand *what* they are waiting for and *how much* progress is being made. Perceived performance is the design work of making a system feel faster than it actually is.

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## Choosing the Right Loading State

| Wait Duration | Best Pattern | Use for |
|---|---|---|
| **Short (< 1s)** | **Inline Spinner / Loader** | Button actions, small updates, quick data fetches |
| **Medium (1s – 3s)** | **Skeleton Screen** | Cards, lists, dashboards, profile pages |
| **Long (> 3s)** | **Determinate Progress Bar** | File uploads, complex exports, heavy processing |
| **Full Page** | **Staggered Entry / Animated Sections** | Initial app load, hero sections, immersive transitions |
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