∞ forever components

Backgrounds

Film Grain

SVG feTurbulence noise jitters over a dark radial-tinted base with scrolling scanlines and a blinking magenta REC dot for an analog film look.

css+canvaslight complexitysubtle motion

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When to use it

Dark hero backgrounds needing tactile film texture; retro/analog aesthetics; video-editing or media-app UIs.

When not to

Light-background layouts (background hardcoded dark). Any context where motion overlays compete with readable text or form controls.

Working with an AI agent

Every component ships agent-ready metadata. An example instruction for this one:

Change accent from magenta to amber (#f59e0b), slow the grain jitter to 1s by editing animation-duration on .c04-grain__noise, and replace the iris/cyan dim tints with warm sepia tones. Theme: dark tokens live in :root, the light variant in :root[data-theme="light"]; ?theme=light or a {type:'forever:theme'} postMessage switches at runtime.

Safe to edit

  • grain jitter speed (0.6s on .c04-grain__noise)
  • scanline scroll speed (6s on .c04-grain__scan)
  • noise baseFrequency (0.9)
  • radial tint colors (--accent-iris-dim, --accent-cyan-dim)
  • REC dot color (--accent-magenta)
  • noise opacity (0.55)
  • theme tokens (:root dark defaults + [data-theme=light] overrides)

Keep intact

  • SVG feTurbulence filter (grain source)
  • visibilitychange pause handler
  • prefers-reduced-motion guard
  • IIFE wrapper
  • theme hook (?theme= bootstrap + forever:theme message listener + theme tokens)

Known limitations

  • Background color hardcoded to near-black — requires CSS edits for any light-mode use
  • Static SVG noise texture; grain pattern never actually changes (only jitters position)
  • No JS-driven randomization — seed is fixed at 3

film-grainnoisescanlinesbackgroundanalogretrosvg-filter

More Backgrounds components

  • Aurora BorealisThree blurred, screen-blended gradient ribbons drift and skew over a near-black background, simulating northern lights in blush, cream, and rose.
  • Mesh GradientFour blurred radial blobs in cream, gold, and tan drift and scale on a dark background with screen blend mode, creating a soft animated mesh gradient.
  • Particle Constellation18–60 lilac/tan/mauve particles drift and bounce; nearby pairs connect with fading lines, forming a shifting constellation network on a dark background.
  • Digital RainCyan katakana and hex glyphs fall in columns down a dark canvas, leaving fading trails; occasional bright white leading chars evoke the Matrix effect.
  • Layered WavesThree SVG wave layers in iris, cyan, and dark slide horizontally at different speeds over a deep blue-gradient sky, creating a parallax depth effect.
  • Starfield WarpStars streak outward from center as cyan/purple/blue light trails simulating hyperspace warp. Auto-spawning keeps density constant on any viewport.