Free online CSS Skeleton Loader generator. Visually create loading placeholder animations, customize shapes, sizes, colors, animation effects. One-click copy CSS/HTML code. Pure frontend, no registration required.
A Skeleton Loader is a progressive loading UI pattern that displays gray placeholder blocks matching the final content layout before the actual content loads. Compared to traditional loading spinners, skeleton screens let users anticipate content placement, reducing perceived wait time and significantly improving user experience. Facebook, LinkedIn, YouTube, and other major apps use skeleton screens as their loading solution.
1. Maintain layout consistency: skeleton layout should match final content exactly; 2. Use smooth animations: shimmer or pulse should be natural, avoid flickering; 3. Reasonable loading time: skeleton should display no more than 2-3 seconds; 4. Semantic HTML: use aria-busy and aria-label for accessibility; 5. Responsive design: skeleton should adapt to different screen sizes.
Skeleton screens typically use CSS linear-gradient for highlight effects combined with CSS animations for shimmer or pulse. Shimmer moves the gradient position via background-position animation, pulse changes opacity. This approach is pure CSS with no JavaScript, offering excellent performance.
A loading placeholder UI pattern that displays gray content outlines before actual content loads, simulating the final layout for better UX than traditional spinners.
Rectangle, circle, and rounded rectangle. Rectangles for text lines and cards, circles for avatars and icons, rounded rectangles for buttons and images.
Copy CSS and HTML code, add CSS to your stylesheet, place HTML where you need loading state. Pure CSS, no JavaScript dependency.
Shimmer: a highlight sweeps left to right, the most common skeleton animation; Pulse: element opacity alternates between 1 and 0.4, subtle and low-key; Wave: element heights change sequentially, suitable for audio or content streams.