Grid loader
Matrix bounce
A bright row scans down and back up without moving the dots. A single React component with its CSS built in and no dependencies. Install it with the shadcn CLI or copy the source.
Preview and installation
Run this command in any project set up with shadcn.
npx shadcn@latest add https://loadercn.vercel.app/r/grid-scan-bounce.jsonAdded the @loadercn registry? Use the short form:
npx shadcn@latest add @loadercn/grid-scan-bounceThen add it to your interface:
import { GridScanBounce } from "@/components/ui/grid-scan-bounce"
<GridScanBounce size={48} speed={1.6} />Inherits text color. Accepts className, style, and a custom loading label. Respects reduced-motion preferences.
import type { CSSProperties, ComponentProps } from "react"
export type GridScanBounceProps = ComponentProps<"span"> & {
size?: number
/** Duration of one complete cycle, in seconds. */
speed?: number
label?: string
}
export function GridScanBounce({
size = 40,
speed = 1.6,
label = "Loading",
className,
style,
...props
}: GridScanBounceProps) {
return (
<span
role="status"
aria-label={label}
{...props}
className={["grid-scan-bounce-loader", className]
.filter(Boolean)
.join(" ")}
style={
{
width: size,
height: size,
"--loader-duration": `${Math.max(0.1, speed)}s`,
...style,
} as CSSProperties
}
>
<span aria-hidden="true" className="grid-scan-bounce-loader-grid">
{Array.from({ length: 16 }, (_, i) => (
<span
key={i}
style={{
animationName: `grid-scan-bounce-loader-row-${Math.floor(i / 4)}`,
}}
/>
))}
</span>
<style>{`
.grid-scan-bounce-loader { display: inline-flex; flex-shrink: 0; }
.grid-scan-bounce-loader-grid { display: grid; width: 100%; height: 100%; grid-template-columns: repeat(4, 1fr); grid-template-rows: repeat(4, 1fr); gap: 8%; }
.grid-scan-bounce-loader-grid > span { background: currentColor; border-radius: 50%; opacity: .16; animation-duration: var(--loader-duration); animation-timing-function: ease-in-out; animation-iteration-count: infinite; }
@keyframes grid-scan-bounce-loader-row-0 { 0.0000% { opacity: 1; } 12.0000% { opacity: 0.16; } 88.0000% { opacity: 0.16; } 100.0000% { opacity: 1; } }
@keyframes grid-scan-bounce-loader-row-1 { 0.0000% { opacity: 0.16; } 4.6667% { opacity: 0.16; } 16.6667% { opacity: 1; } 28.6667% { opacity: 0.16; } 71.3333% { opacity: 0.16; } 83.3333% { opacity: 1; } 95.3333% { opacity: 0.16; } 100.0000% { opacity: 0.16; } }
@keyframes grid-scan-bounce-loader-row-2 { 0.0000% { opacity: 0.16; } 21.3333% { opacity: 0.16; } 33.3333% { opacity: 1; } 45.3333% { opacity: 0.16; } 54.6667% { opacity: 0.16; } 66.6667% { opacity: 1; } 78.6667% { opacity: 0.16; } 100.0000% { opacity: 0.16; } }
@keyframes grid-scan-bounce-loader-row-3 { 0.0000% { opacity: 0.16; } 38.0000% { opacity: 0.16; } 50.0000% { opacity: 1; } 62.0000% { opacity: 0.16; } 100.0000% { opacity: 0.16; } }
@media (prefers-reduced-motion: reduce) { .grid-scan-bounce-loader-grid > span { animation: none !important; opacity: .65; } }
`}</style>
</span>
)
}
Copy the complete file into your components directory. Styles are included.
When to use it
A back-and-forth scan with no visible loop point. Fits indefinite waits like listening for events or waiting on a device.
Props
Matrix bounce accepts size, speed, label, className, and style, like every loader in the collection. See the installation guide for the full reference.