SVG Loading Skeleton Screens
SVG skeletons draw content-shaped placeholders with animated shimmer — lighter and sharper than image-based loading states.
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Why SVG for Skeletons
A skeleton screen mirrors the coming layout with gray shapes. SVG draws these shapes in a few hundred bytes, scales them to any container, and animates the shimmer with a moving gradient — all self-contained, no extra assets. Tools and libraries generate skeleton SVGs directly from layout dimensions.
- Few hundred bytes per skeleton vs image placeholders
- Shapes scale perfectly with responsive containers
- Self-contained shimmer via animated SVG gradients
The Shimmer Mechanics
The classic effect: a linearGradient with a light band, animated across the shapes via animateTransform or CSS. Clip the gradient to your placeholder shapes with a clipPath so the shimmer only sweeps the skeleton elements. Respect prefers-reduced-motion by disabling the sweep and showing static placeholders.
- Animated linearGradient creates the sweeping highlight
- clipPath confines shimmer to placeholder shapes
- Disable animation under prefers-reduced-motion
Frequently Asked Questions
Should skeletons match content shapes exactly?
Approximately — match the layout structure (text lines, avatars, cards) so the transition feels seamless, but don't over-engineer pixel fidelity. Structure prevents layout shift; detail doesn't matter.
SVG skeleton vs CSS-only skeleton — which is better?
CSS handles simple rectangles fine. SVG wins for complex shapes (circles, mixed layouts, irregular cards) and when you want one portable component containing the whole loading state.
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