Hover · 44 / 56

Thermal Scan

A false-color thermal view of the live pixels washes across the image on hover, like a night-vision scan.

Hover the preview to sweep the thermal scan across.

Adjust

Palette hue180deg

Intensity2.2

Duration600ms

Easing

Metadata

interaction: Hover · static fallback
browser: Enhanced — backdrop-filter
reduced motion: included
touch fallback: Static on touch

/* Thermal Scan — made with Image FX · https://cssimagelab.com/effects/thermal-scan */
.ifx-card {
  position: relative; display: block; overflow: hidden;
  border-radius: var(--ifx-radius, 4px);
  aspect-ratio: var(--ifx-ar, 4 / 3); isolation: isolate;
}
@supports (corner-shape: squircle) { .ifx-card { corner-shape: squircle; } }
.ifx-card__img {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
  transition: transform var(--ifx-duration, 500ms) var(--ifx-ease, cubic-bezier(.2,.6,.2,1)),
              filter var(--ifx-duration, 500ms) var(--ifx-ease, ease);
}
.ifx-card__caption {
  position: absolute; z-index: 3; margin: 0; color: var(--ifx-text, #fff);
}
.ifx-card__caption h3 { margin: 0; font-size: 1.05rem; font-weight: 600; line-height: 1.2; }
.ifx-card__caption p { margin: 0.3rem 0 0; font-size: 0.78rem; opacity: 0.82; }

.ifx-card--thermal-scan {
  --ifx-hue: 180deg;
  --ifx-sat: 2.2;
  --ifx-duration: 600ms;
  --ifx-ease: cubic-bezier(.2,.6,.2,1);
}

.ifx-card--thermal-scan::after {
  content: ""; position: absolute; inset: 0; z-index: 2; pointer-events: none;
  clip-path: inset(0 100% 0 0);
  -webkit-backdrop-filter: invert(1) hue-rotate(var(--ifx-hue, 180deg)) saturate(var(--ifx-sat, 2.2)) contrast(1.05);
  backdrop-filter: invert(1) hue-rotate(var(--ifx-hue, 180deg)) saturate(var(--ifx-sat, 2.2)) contrast(1.05);
  transition: clip-path var(--ifx-duration, 600ms) var(--ifx-ease, cubic-bezier(.2,.6,.2,1));
}
@media (hover: hover) and (pointer: fine) {
  .ifx-card--thermal-scan:hover::after,
  .ifx-card--thermal-scan:focus-within::after { clip-path: inset(0); }
}

@media (prefers-reduced-motion: reduce) {
  .ifx-card, .ifx-card *, .ifx-card::before, .ifx-card::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

Edit the CSS above — the preview updates live.

Thermal Scan

About Thermal Scan

Use cases

Browser support

Accessibility