Gear Spinner
A single toothed gear turning steadily. Drawn with a repeating conic gradient and a radial mask, so it stays razor sharp at any size and needs no icon.
Also known as: cog loader, settings gear animation.
HTML
<div class="ldr-gear" role="status" aria-label="Working"></div>
CSS
.ldr-gear {
--s: var(--ldr-size, 48px);
--c: var(--ldr-color, #3b82f6);
position: relative;
width: var(--s);
height: var(--s);
border-radius: 50%;
overflow: hidden;
background: radial-gradient(circle, transparent calc(var(--s) * 0.17), var(--c) calc(var(--s) * 0.17 + 1px) calc(var(--s) * 0.36), transparent calc(var(--s) * 0.36 + 1px));
animation: ldr-gear-turn 4s linear infinite;
}
.ldr-gear::before {
content: "";
position: absolute;
inset: 0;
background: repeating-conic-gradient(var(--c) 0 22deg, transparent 22deg 45deg);
-webkit-mask: radial-gradient(circle, transparent calc(var(--s) * 0.3), #000 calc(var(--s) * 0.3 + 1px));
mask: radial-gradient(circle, transparent calc(var(--s) * 0.3), #000 calc(var(--s) * 0.3 + 1px));
}
@keyframes ldr-gear-turn {
to { transform: rotate(360deg); }
}
@media (prefers-reduced-motion: reduce) {
.ldr-gear, .ldr-gear *, .ldr-gear::before, .ldr-gear::after {
animation-duration: 3s;
}
}Customizing this loader
- Color: set
--ldr-coloron the element or a parent. Currently previewing#3b82f6. - Size: set
--ldr-size. Every dimension in the snippet is derived from it. Currently previewing64px. - Speed: change the duration on the
animationshorthand. Delays on the children are relative, so they keep their rhythm. - Accessibility: the root carries
role="status"and anaria-labelso screen readers announce the wait. The reduced-motion rule at the end slows the animation for users who asked for less motion.