DevKit Tools

CSS Animation Generator

Generate CSS keyframe animations: spin, pulse, bounce, float, shake, fade, slide, swing, flip and ping. Control duration, delay, easing and iterations.

Motion/Animation
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Timing Function

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-30px); }
}

.animated {
  animation: bounce 1.2s ease-in-out 0s infinite both;
}

About the css animation generator

A CSS animation is a named set of keyframes plus a shorthand describing how to play it: duration, easing, delay, iteration count and fill mode. The ten animations here cover the cases that come up constantly, from a spinner to an attention shake on a failed form field.

The exported CSS includes both the keyframes block and the animation shorthand, so it works as a straight paste with nothing missing.

How to use it

  1. 1Pick an animation and press Replay to watch it from the start.
  2. 2Set the duration. Under 300 milliseconds reads as instant, over two seconds feels slow.
  3. 3Add a delay if it should wait, for example when staggering a list.
  4. 4Choose an easing. ease-in-out suits most movement.
  5. 5Set it to loop, or give it a fixed number of iterations.
  6. 6Copy the CSS.

Worth knowing

  • animation-fill-mode: both keeps the element at its final frame instead of snapping back.
  • Wrap decorative animation in a prefers-reduced-motion query so it can be turned off.

Questions

Why does my element jump back after the animation?

Without animation-fill-mode the element returns to its original state. Use both, or forwards, to hold the final keyframe. The exported CSS includes it.

Should I use CSS animation or a library?

For a single element with a defined sequence, CSS is smaller and faster. Reach for a library when you need orchestration across many elements, or physics-based motion.

How do I respect users who prefer less motion?

Wrap the animation in @media (prefers-reduced-motion: no-preference), so it only runs for people who have not asked to reduce it.

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