Developer Tools

CSS Animation Generator

Build custom CSS keyframe animations visually with a timeline editor, live preview, and easing curve builder. Copy production-ready @keyframes and animation CSS instantly.

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@keyframes myAnimation {
  0% {
    background-color: #3B82F6;
  }
  100% {
    background-color: #3B82F6;
  }
}

.animated-element {
  animation: myAnimation 1s ease 0s infinite normal both;
}

Free Online CSS Animation Generator — Visual Keyframe Builder

What Is a CSS Animation Generator?

A CSS animation generator is a visual tool that lets you create custom @keyframes animations without writing CSS by hand. Instead of guessing at percentage stops and property values, you use a visual timeline to add keyframes, adjust properties with sliders, and see the result in a live preview. Our free CSS animation generator combines a keyframe timeline editor, a live preview canvas, a cubic-bezier easing curve editor, and a preset library into one clean tool — all running 100% client-side in your browser.

How to Use This Animation Generator

Choose a preset animation to start (fade, slide, bounce, spin, pulse, shake, and more) or begin from scratch with blank keyframes. Click the horizontal timeline to add keyframe stops at specific percentages. For each stop, use the property editor panel to adjust transform properties (translate, rotate, scale, skew), opacity, background color, border radius, and box shadow. Adjust animation settings — duration, delay, easing curve, iteration count, direction, and fill mode. The live preview shows your animation running in real time. When satisfied, copy the generated CSS code.

Key Features

  • Visual keyframe timeline — drag-and-drop percentage stops on a horizontal timeline
  • Live preview — preview on a customizable element (box, circle, text, button)
  • 14+ presets — fade, slide, bounce, pulse, spin, shake, and more
  • Cubic-bezier editor — visual curve builder with draggable control points
  • Clean CSS output — generated @keyframes and animation shorthand, ready to copy
  • Full property control — transform, opacity, color, border-radius, and box-shadow per keyframe

Understanding CSS Animations

CSS animations use two parts: the @keyframes rule that defines the animation steps, and the animation property that applies it to an element. The @keyframes rule names the animation and specifies property values at percentage stops (0% is the start, 100% is the end, and any percentage in between adds intermediate steps). The animation shorthand property controls duration, timing function (easing), delay, iteration count, direction, fill mode, and play state. The timing function is especially important — it defines the acceleration curve using keywords like ease-in-out or custom cubic-bezier values.

Common Use Cases

  • Page entrance effects — fade-in, slide-up, and zoom-in animations for content sections
  • Loading spinners — rotating and pulsing indicators for async operations
  • Hover interactions — button hover effects, card lift animations, and icon transitions
  • Attention grabbers — shake, bounce, and pulse effects for notifications and CTAs
  • Background effects — gradient shifts, parallax movements, and ambient animations

Tips and Best Practices

Keep animations subtle and purposeful — excessive or distracting animations hurt user experience. Use transform and opacity properties for animations whenever possible, as they are GPU-accelerated and perform much better than animating layout properties like width, height, or margin. Set appropriate animation-fill-mode — use forwards to keep the final state after the animation ends, or both to apply styles at both start and end. Test animations on lower-powered devices to ensure they remain smooth. For accessibility, always respect the prefers-reduced-motion media query by providing a simpler or disabled alternative for users who are sensitive to motion.

Frequently Asked Questions