What is the CSS Skeleton Loader Generator?
Generate animated skeleton loading placeholders that match your layout. Customize dimensions, border radius, and shimmer animation, then copy the CSS.
Everything runs locally in your browser. Adjust the controls above, preview instantly, and copy clean, production-ready CSS — no account, no upload.
Using the CSS Skeleton Loader Generator
Everything lives in the panel at the top of this page. There is nothing to install — it all runs right here in your browser.
Define your layout skeleton
Use the visual builder to draw rectangles representing your text lines, images, and buttons. Set width, height, and border-radius for each block.
Configure the shimmer animation
Set the shimmer colour, speed, and direction. A 1.2-1.8s shimmer is comfortable. Faster reads as loading; slower reads as broken.
Copy CSS and HTML
Click Copy to get the skeleton classes and a sample HTML structure. Replace with your actual component structure.
What the generated code looks like
Clean, production-ready CSS — no vendor bloat, no unnecessary declarations.
.skeleton {
background: #e2e8f0;
border-radius: 4px;
overflow: hidden;
position: relative;
}
.skeleton::after {
content: '';
position: absolute;
inset: 0;
background: linear-gradient(
90deg,
transparent 0%,
rgba(255, 255, 255, 0.6) 50%,
transparent 100%
);
animation: shimmer 1.5s infinite;
}
@keyframes shimmer {
from { transform: translateX(-100%); }
to { transform: translateX(100%); }
}
/* Usage */
.skeleton-title { width: 60%; height: 24px; }
.skeleton-text { width: 100%; height: 16px; }
.skeleton-avatar { width: 48px; height: 48px; border-radius: 50%; }Match skeleton dimensions as closely as possible to your real content to prevent layout shift when the data loads.
Pro tips for better results
Match real content dimensions as closely as possible
The skeleton should predict the loaded content dimensions. A skeleton that matches prevents cumulative layout shift (CLS) when real data loads - a Core Web Vitals metric.
Use a grey lighter than your content background
#e2e8f0 (Tailwind slate-200) works for white backgrounds. On dark backgrounds, use a slightly lighter shade than the surface. High contrast skeleton colours look jarring.
Show skeleton for loads over 300ms, not for instant data
If data loads in under 300ms (cached API, local state), skip the skeleton entirely. Flashing a skeleton and immediately replacing it is more disorienting than a brief blank state.
Skeleton loaders perform better than spinners for content-heavy pages
A spinner gives no information about what is coming. A skeleton that approximates the content layout reduces perceived wait time because the user can already understand the page structure.
Frequently asked questions
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