CSS Animation Generator

CSS keyframe animations let you define intermediate steps in an animation sequence. Each keyframe specifies the style values at a particular point during the animation.

@keyframes Rule

The @keyframes rule defines the animation behavior. Each step is specified as a percentage (0% is the start, 100% is the end) along with the CSS properties to apply at that point.

Animatable Properties

• Transform: translateX, translateY, rotate, scale — GPU-accelerated and performant
• Opacity: Fading elements in and out — also GPU-accelerated
• Background color: Transitioning between colors
• Border radius: Morphing shapes

Easing Functions

Easing controls the rate of change during the animation. Common options include ease (default), linear, ease-in, ease-out, and custom cubic-bezier() curves. The curve defines acceleration: the steeper the slope, the faster the change.

Performance Tips

• Prefer transform and opacity — they run on the compositor thread
• Avoid animating width, height, top, left — these trigger layout reflows
• Use will-change sparingly to hint the browser about upcoming animations

You can embed this util on your own site as a widget. Adding ?embed=1 to the URL loads a compact version with just the tool itself; no header, menu, or documentation. Paste this snippet into your HTML:

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