CSS Animation Generator

Build CSS keyframe animations with live preview.

Animation type

Duration

Timing function

Delay

Iteration count

Direction

Fill mode

Live Preview

Box

Generated CSS

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.element {
  animation: fadeIn 1s ease 0s 1 normal both;
}

About This Tool

The CSS Animation Generator lets you create smooth CSS animations by configuring keyframe presets, timing, duration, delay, and iteration settings. A live preview shows the animation in action, and you can copy the complete @keyframes rule and animation shorthand directly into your CSS.

CSS animations are performance-efficient when using transform and opacity properties, as these are composited on the GPU and do not trigger layout or paint. All 12 presets in this tool follow that best practice.

How to Use

Select an animation type from the dropdown.
Set the duration (e.g., 0.5s, 2s).
Choose a timing function to control easing.
Optionally set a delay before the animation starts.
Set iteration count (a number or infinite).
Click Replay to preview, then Copy to export the CSS.

Use Cases

Front-end developers use fade and slide animations to improve perceived performance when loading content. UI designers prototype micro-interactions like button pulses and notification shakes. Loading spinners use the spin animation. Marketing landing pages use zoom-in and slide-up animations to draw attention to call-to-action elements.

FAQ

What is fill-mode: both? — The animation applies the start styles before it begins (respecting delay) and keeps the end styles after it finishes. This is the most commonly useful setting.
How do I make an animation loop forever? — Set iteration count to infinite.
Are CSS animations better than JavaScript animations? — For simple, declarative effects, CSS animations are preferred because the browser can optimize them. For complex sequencing or interactivity, JavaScript (via Web Animations API or libraries) offers more control.