animated background css

How to use the animated background css

1. Pick an effect: moving gradient, floating particles, aurora wash, or starfield.
2. Adjust speed, scale, and palette — live preview updates instantly.
3. Toggle reduced-motion compliance for @media (prefers-reduced-motion).
4. Copy CSS — pure CSS output with no JavaScript framework required.

When to use it

Use animated backgrounds on hero sections, splash screens, and empty-state illustrations where motion adds warmth without distracting from content. Avoid on dashboards, reading surfaces, or any page users spend more than a few seconds on — constant motion is fatiguing. Alternative: particles.js and three.js offer richer effects but ship JS; these CSS animations stay lightweight.

Frequently asked questions

Will the animation drain mobile batteries?

CSS background animations are GPU-accelerated and cheap, but still cost power. Pause animations when the page is not in the viewport using the IntersectionObserver + animation-play-state pattern.

Does it respect prefers-reduced-motion?

Yes — the output CSS wraps the @keyframes in @media (prefers-reduced-motion: no-preference) so motion-sensitive users see a static fallback.

Can I use these as Slack/Discord backgrounds?

No — those platforms only accept images. Export a static frame as PNG if you need a still version.

Related generators

• Free Gradient Generator
• Free Mesh Gradient Generator
• Free Loading Animation Generator
• Free Background Pattern Generator