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Live Canvas 2D loop · move your pointer
Open ↗Freeunderwater caustic ripples · dark · canvas
Caustic Light
Sunlight through water: a web of bright caustic lines that drift and tangle across the floor of a pool, computed as interfering wave ridges at low resolution and softened on upscale. The pointer is a disturbance; the caustics brighten and tighten under it.
How to use it
Run the real thing here, tune it, then copy the prompt that rebuilds it.
- 01Launch and look
The preview is the shipped loop itself: CSS, SVG or Canvas 2D, a few kilobytes, no WebGL.
- 02Dial it in
Swatches recolour, sliders change density and speed, toggles switch parts on and off. Randomize for a surprise.
- 03Pick your stack
A snippet for any page, or a component for Next.js, React, Vue, Astro, WordPress, Shopify or Webflow.
- 04Copy the prompt
It quotes the loop verbatim with your CONFIG values baked in, plus the integration rules.
- 05Drop it behind a section
Container gets position: relative and overflow: hidden; the background fills it; content sits above.
