Holo Card shader preview: Any image as a holographic trading card that tilts towards the pointer, its foil flashing in the light.
ittybitty

Holo Card

Any image as a holographic trading card that tilts towards the pointer, its foil flashing in the light.

Code

Use as

Copy embed: paste into Webflow, Framer, Squarespace or any HTML · Copy for agent: paste into Cursor or Claude · Copy code: the files for your own build.

For your own build, add holo-card.js, ittybitty-shader.js, runtime.js, pointer.js and texture.js next to this page. Highlighted values follow the controls.

<!-- Quickest: one element. Size it with CSS; it fills its box. -->
<script type="module" src="./ittybitty-shader.js"></script>
<ittybitty-shader effect="holo-card" style="width: 100%; aspect-ratio: 16 / 10;"></ittybitty-shader>

<!-- Or with JavaScript, for full control: -->
<canvas id="holo-card" aria-hidden="true" style="width: 100%; aspect-ratio: 16 / 10; display: block"></canvas>

<script type="module">
  import { holoCard } from './holo-card.js';

  const canvas = document.getElementById('holo-card');
  const effect = holoCard(canvas, {
    showBackground: true,
    showBorder: true,
    showShadow: true,
    image: '/examples/still-life.webp',
    foil: 'rainbow',
    reverse: false,
    strength: 0.8,
    glare: 0.6,
    tilt: 20,
    scale: 1,
    etch: 0.4,
    hue: 0,
    size: 0.8,
    radius: 0.3,
    border: 0.35,
    borderColour: '#f1cf55',
    background: '#0e0f14',
    speed: 1,
    interactive: true,
    responsiveness: 0.5,
    // Performance
    dpr: 2,
    adaptive: true,
  });

  // Later: effect.set(…), effect.pause(), effect.resume(), effect.destroy()
</script>

Details

The picture becomes a trading card, drawn in perspective with a soft shadow, that tilts as if pressed where the pointer is. A foil layer catches the light: its colours come from the angle between the light, the card and the eye, so they slide past as the card turns, and it shows most in the mid-tones, as printed foil does. Choose diagonal rainbow, a starfield, glitter, sun pillars, a diamond crosshatch, cracked ice or etched gold, on the picture or, reverse holo, on the frame. With no pointer it sways gently.

Payload
12.3 KB brotli for holo-card.js, ittybitty-shader.js, runtime.js, pointer.js and texture.js, measured at build time.
Resolution
Device pixel ratio capped at 2, so glitter and fine foil stay crisp.
Frame rate
Display rate.
When unseen
Stops rendering when the canvas leaves the viewport or the tab is hidden, and resumes where it left off.
Reduced motion
Shows a single still frame. The card still tilts with the pointer.
Layers
Up to five effects fuse into one shader and one draw call. Filters such as dithering and halftone process the layers beneath them.
Browsers
Any browser with WebGL2: Chrome and Edge 56+, Firefox 51+, Safari 15+.
Licence
MIT. Copy it, change it, ship it.