ZenovayTools

CSS Animation Generator

Generate CSS keyframe animations visually. Choose animation type, duration, easing, and iterations — get copy-ready CSS code.

Animation preset:

Preview

How to Use CSS Animation Generator

  1. 1Select an animation preset (fade, slide, bounce, spin, etc.).
  2. 2Adjust duration, delay, easing, and iteration count.
  3. 3Preview the animation live in the browser.
  4. 4Copy the generated CSS keyframes and animation property.
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Frequently Asked Questions

What is the difference between CSS transitions and animations?▾
CSS transitions animate a property change between two states triggered by an event (hover, focus, class change): transition: opacity 0.3s ease. CSS animations use @keyframes to define multi-step sequences that run automatically: animation: fadeIn 1s ease forwards. Transitions are simpler for hover effects; animations are better for continuous effects (loading spinners), entrance effects, or multi-step sequences that run without user interaction.
What are easing functions?▾
Easing functions control how an animation progresses over time. Linear: constant speed throughout. Ease: slow start, faster middle, slow end (default). Ease-in: slow start, fast end. Ease-out: fast start, slow end (good for exit animations). Ease-in-out: slow at both ends. cubic-bezier(x1, y1, x2, y2): custom curve — use cubic-bezier.com to visualize. steps(n): jumpy/discrete steps (good for sprite animations).
What does animation-fill-mode do?▾
animation-fill-mode controls what styles apply when the animation is not playing: none (default) — no styles from keyframes apply before/after. forwards — the final keyframe styles remain after the animation ends. backwards — the initial keyframe styles apply during the delay period. both — combines forwards and backwards. For entrance animations (like fadeIn), use fill-mode: both to prevent the element from flashing at its pre-animation state.
How do I trigger animations on scroll?▾
CSS-only: use the animation-play-state property. Add a class with animation-play-state: running via JavaScript when the element scrolls into view using IntersectionObserver. Modern CSS: the @scroll-timeline and animation-timeline: scroll() API allows pure CSS scroll-driven animations in Chrome 115+. A simple approach: add an "animate" class with JavaScript when the element enters the viewport, then have CSS animations defined on that class.
Should I use CSS animations or JavaScript animations?▾
CSS animations are preferred for simple, discrete animations — they run on the compositor thread and avoid layout/paint where possible. JavaScript (Web Animations API, GSAP, Framer Motion) is better for: complex sequencing, interactive animations, physics-based motion, and animations that depend on runtime values. The Web Animations API gives JavaScript control over CSS animations: element.animate([...keyframes], { duration: 300 }). GSAP is the gold standard for complex animations.