Pulsar

Spike

CSS

A horizontal line representing a steady signal suddenly surges upward into a sharp spike that flashes once before flattening.

Tier
CSS
Dependencies
None
Duration
4 s, loops
Categories
Icons and micro-interactions
Use cases
Errors and warnings, Dashboards and reporting
Industries
Security and identity, Cross-industry
Style
Minimal line · light stroke
Set
anomaly
Tags
linepulsegeometricstrokeminimal

Companion assets

The same artwork, not animated. Derived from the entry’s own resting state, so it matches exactly.

Animated
CSS tier
Static vector
Spike, not animated
Download SVG

Code

animation.svg

<svg xmlns="http://www.w3.org/2000/svg" fill="none" aria-hidden="true" class="pulsar pulsar-anomaly-spike" data-pulsar="anomaly-spike" viewBox="0 0 160 96"><line x1="24" x2="136" y1="56" y2="56" stroke="currentColor" stroke-linecap="round" stroke-width="2" class="anomaly-spike-base" opacity=".5"></line><path stroke="var(--pulsar-accent, currentColor)" stroke-linecap="round" stroke-linejoin="round" stroke-width="2.5" d="M24 56h44l8-34 8 50 8-16h44" class="anomaly-spike-path"></path><circle cx="76" cy="22" r="3.5" fill="var(--pulsar-accent, currentColor)" class="anomaly-spike-peak"></circle><circle cx="76" cy="22" r="9" stroke="var(--pulsar-accent, currentColor)" stroke-width="1.5" class="anomaly-spike-halo"></circle></svg>

animation.css

.pulsar-anomaly-spike {
  display: block;
  overflow: visible;
}
.pulsar-anomaly-spike .anomaly-spike-path {
  stroke-dasharray: 180;
  stroke-dashoffset: 180;
  animation: anomaly-spike-path-anim 4000ms cubic-bezier(0.2, 1, 0.3, 1) infinite;
}
.pulsar-anomaly-spike .anomaly-spike-peak {
  transform-origin: 76px 22px;
  animation: anomaly-spike-peak-anim 4000ms ease infinite;
}
.pulsar-anomaly-spike .anomaly-spike-halo {
  transform-origin: 76px 22px;
  animation: anomaly-spike-halo-anim 4000ms ease infinite;
}

@keyframes anomaly-spike-path-anim {
  0%,
  15% {
    stroke-dashoffset: 180;
    opacity: 0;
  }
  25% {
    opacity: 1;
  }
  50%,
  75% {
    stroke-dashoffset: 0;
    opacity: 1;
  }
  90%,
  100% {
    stroke-dashoffset: -180;
    opacity: 0;
  }
}

@keyframes anomaly-spike-peak-anim {
  0%,
  30% {
    transform: scale(0);
    opacity: 0;
  }
  38% {
    transform: scale(1.4);
    opacity: 1;
  }
  50%,
  75% {
    transform: scale(1);
    opacity: 1;
  }
  88%,
  100% {
    transform: scale(0);
    opacity: 0;
  }
}

@keyframes anomaly-spike-halo-anim {
  0%,
  34% {
    transform: scale(0.3);
    opacity: 0;
  }
  40% {
    opacity: 0.9;
  }
  55% {
    transform: scale(1.6);
    opacity: 0;
  }
  100% {
    transform: scale(1.6);
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .pulsar-anomaly-spike * {
    animation: none !important;
  }
}

From this family15 in Anomaly

See the family