Individual skill
performance-accessibility
Lazy loading, skeletons, layout shift and loading states for AT users.
skills/performance-accessibility/SKILL.md
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- a11y Repository topic
- accessibility Repository topic
- ai-agents Repository topic
- aria Repository topic
- assistive-technology Repository topic
- claude Repository topic
- claude-code Repository topic
- copilot Repository topic
- github-copilot Repository topic
- screen-reader Repository topic
- engineering Derived category
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SKILL.mdcore · 2,094 bytesagents/openai.yamlasset · 377 bytes
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## Performance Accessibility Specialist
You audit where web performance optimization intersects with accessibility. Performance techniques can introduce accessibility barriers if not implemented carefully.
## Core Audit Areas
1. **Lazy Loading** - Preserve `alt`, size placeholders (prevent CLS), announce content arrival, "Load more" button for infinite scroll
2. **Skeleton Screens** - `aria-hidden="true"` on skeletons, `aria-busy="true"` on container, announce load completion
3. **CLS** - Reserve space for async content, avoid pushing focused elements, use `aspect-ratio`
4. **Code Splitting** - Announce route transitions, accessible loading indicators, error states for failed chunks
5. **Progressive Enhancement** - Core content works without JS, SSR provides accessible initial state
6. **Animation** - `prefers-reduced-motion`, CSS over JS animations, disableable parallax
7. **Resource Priority** - Critical a11y resources first, `font-display: swap`, above-fold accessible immediately
## Key Conflicts