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CSS Animation Generator

Generate CSS keyframe animation code

Updated

What is the CSS Animation Generator?

Unlock smooth, performant web animations without hand‑coding every keyframe. The CSS Animation Generator gives you an interactive visual editor where you can build, preview, and export pure CSS @keyframes and the full animation shorthand — right in the browser.

Start from a library of carefully tuned presets (fade, slide, bounce, shake, pulse, rotate, and more) or build your own from scratch. Adjust every parameter: translate X/Y, scale, rotation, skew, and opacity at each keyframe percentage, plus global settings like duration, delay, easing, direction, iteration count, and fill mode. The live preview updates instantly, so you see exactly how your animation behaves.

All the generated code is clean, minimal, and production‑ready — no JavaScript, no dependencies. Perfect for landing pages, UI micro‑interactions, loaders, and any element you want to bring to life with just CSS.

How it works

  1. Pick a starting point Choose a preset from the dropdown to load a ready‑made set of keyframes and suggested settings. You can also start from scratch with a simple two‑keyframe setup.

  2. Tune the global animation settings

Animation name: a unique, valid CSS identifier used in the @keyframes rule and animation property.

Duration & Delay: set in seconds (s) or milliseconds (ms) with adjustable unit.

Iteration count: a fixed number or toggle infinite for looping animations.

Direction: normal, reverse, alternate, or alternate‑reverse.

Timing function: pick from common easing curves (ease, linear, etc.) or craft a custom cubic‑bezier() curve using x1, y1, x2, y2 values.

Fill mode: control how the animation applies styles before and after execution (none, forwards, backwards, both).

  1. Edit keyframes visually Every keyframe is displayed as a card. You can:

Set the percentage (0–100) to position the keyframe on the timeline.

Input numeric values for translateX, translateY, rotate, scale, skewX, skewY, and opacity. Leave a field empty to skip that property.

Add new keyframes with the + Add Keyframe button or remove individual ones (at least two are required).

  1. Watch the live preview A demo element on the left shows your animation in real‑time. The tool injects a style block into the page that updates with every change, so you can fine‑tune until the motion feels just right.

  2. Copy the generated CSS The complete, self‑contained CSS appears in the code editor on the right. It includes the @keyframes rule and a ready‑to‑use .anim-preview class. Hit the copy button to grab the code, then paste it into your project and replace the class selector as needed.

Examples

Fade In Effect

Create a smooth fade-in animation for any element.

Animation Name: fade-in
Duration: 1s
Timing Function: ease
Keyframes:
  0%: opacity 0
  100%: opacity 1
 
@keyframes fade-in {
  0% { opacity: 0; }
  100% { opacity: 1; }
}

.element {
  animation: fade-in 1s ease;
}

Frequently asked questions

What exactly does this generator produce?

It outputs two essential pieces of CSS: an @keyframes rule that defines the animation’s intermediate steps, and a complete animation shorthand value that bundles all the timing, delay, iteration, and direction properties. You get a clean, self‑contained block of code ready to drop into any stylesheet.

Can I use these animations in all modern browsers?

Yes. The generator uses standard CSS transforms and the opacity property. These are hardware‑accelerated and supported in every current browser, including Chrome, Firefox, Safari, and Edge. No vendor prefixes are needed for the generated code.

How do I apply the animation to my own element?

Copy the generated CSS, then replace .anim-preview with the selector of the element you want to animate. If you only need the @keyframes block, copy just that part and reference it in your own animation rule. The generator provides both parts separately in the output panel.

What is the difference between “ease”, “linear”, and “cubic‑bezier”?

  • ease (default) – starts slowly, speeds up, then slows down toward the end.
  • linear – moves at a constant speed from start to finish.
  • ease‑in – starts slowly and accelerates.
  • ease‑out – starts quickly and decelerates.
  • ease‑in‑out – a smoother combination of both.
  • cubic‑bezier – gives you full control. Define your own curve by entering four numeric values (x1, y1, x2, y2). The x values must be between 0 and 1.

Why is the live preview not animating?

Check that your animation has a positive duration and that the keyframes contain at least one property change. For example, if all keyframes have identical opacity and transforms, the preview won’t show movement. Also, make sure you haven’t accidentally set both iteration-count to 0 or left the animation name empty.

Can I animate properties other than transform and opacity?

The generator intentionally focuses on transform and opacity because they are the most performant CSS properties for animations (they don’t trigger layout recalculations). You can always take the generated code and manually add other properties like color or width inside the @keyframes block if needed.

Does the tool support responsive animations?

The generated CSS uses fixed pixel values for translations and degrees for rotations. To make an animation responsive, you can replace the pixel values with relative units (like %, em, or vw) directly in your stylesheet after copying. The generator outputs clean, un‑minified code so it’s easy to edit.

How do I loop an animation infinitely?

Toggle the infinite checkbox next to the iteration count input. This sets animation-iteration-count: infinite in the shorthand, making the animation repeat endlessly. To stop after a specific number, uncheck the box and enter a number.

Is my data stored or sent anywhere?

No. Everything runs client‑side in your browser. No data is saved, uploaded, or transmitted. You can close the page and come back later — all settings will be reset.

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