Choose from common animation presets, tweak duration, easing, delay and iteration count. Get live preview and copy the CSS keyframe code.
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About CSS Animation Generator
Create CSS @keyframes animations with a visual builder. Choose from popular animation types like fade, slide, bounce, rotate, and pulse, then customize duration, easing, delay, and iteration. The output includes both the @keyframes block and the animation property.
CSS Animation Properties
Duration - how long one cycle takes · Delay - wait before starting · Easing - acceleration curve · Iteration - how many times to repeat (infinite = forever) · Direction - alternate reverses on every other cycle
Frequently Asked Questions
CSS transitions respond to state changes (like :hover) and animate between two states. CSS animations use @keyframes to define multiple steps and can run automatically, loop, and have complex multi-step sequences without requiring a state change trigger.
Copy the generated CSS and paste it into your stylesheet. The output includes both the @keyframes definition and the animation shorthand property. Add the animation property to any selector you want animated.
With alternate direction, the animation plays forward on odd iterations and backward on even iterations. This creates a smooth back-and-forth effect. It's commonly used for pulse, bounce, and breathing animations.
CSS animations that use only transform and opacity are highly performant because browsers can optimize them on the GPU compositor thread without triggering layout recalculation. Avoid animating width, height, margin, or padding as these cause reflows.
About CSS Animation Generator — CSS Animation Generator Online
This free CSS animation generator online lets you build CSS @keyframes animations visually with a live preview, then copy ready-to-use CSS code with a single click. Choose from nine animation presets including Fade, Slide Up, Slide Down, Bounce, Pulse, Rotate, Shake, Flip, and Wobble. Customize the duration, delay, easing function, iteration count, and direction. The generated CSS output includes both the complete @keyframes block and the animation shorthand property, ready to paste directly into any stylesheet.
Front-end developers, UI designers, and web animators use CSS animation generators to prototype motion effects quickly without writing keyframes from scratch for every new animation. CSS animations are the most performant way to add motion to web interfaces because they run in the browser's compositor thread without blocking JavaScript execution. This CSS animation generator online handles all the syntax and property values so you can focus on the visual result rather than the code details.
How to Use the CSS Animation Generator
Select an Animation Preset from the grid on the right panel. Click any preset — Fade, Slide Up, Bounce, Pulse, Rotate, Shake, Flip, Wobble, or Slide Down — to load it and immediately start the live preview.
Adjust the Duration slider to control how long one cycle of the animation takes. Drag left for faster animations (as low as 100ms) or right for slower ones (up to 5 seconds).
Set the Delay slider to add a pause before the animation begins playing. This is useful for staggered entrance animations where multiple elements animate in sequence.
Choose an Easing function from the dropdown — ease, ease-in, ease-out, ease-in-out, linear, Back (spring effect), or Steps — to control the acceleration curve of the motion.
Set the Iteration Count (1, 2, 3, or infinite) and the Direction (normal, reverse, alternate, or alternate-reverse). Then click Copy CSS to copy the generated code.
CSS Animation Properties Explained
The generated CSS uses the animation shorthand property, which combines six sub-properties: animation-name (the @keyframes identifier), animation-duration (how long one cycle takes), animation-timing-function (the easing curve), animation-delay (initial pause), animation-iteration-count (number of cycles or infinite), and animation-direction (forward, backward, or alternating). The @keyframes block defines the CSS state at each percentage of the animation cycle — typically 0% (start) and 100% (end), with intermediate stops for complex multi-step animations.
Tips for Getting the Best Results
Animate only transform and opacity for maximum performance: CSS properties that trigger layout recalculation — such as width, height, margin, padding, and top/left — cause the browser to repaint the entire page on every frame, resulting in janky animations. The transform property (translate, scale, rotate) and opacity are composited on the GPU and produce smooth 60fps animations even on lower-powered devices.
Use alternate direction for looping effects: The alternate direction setting makes the animation play forward then reverse on each iteration, creating a smooth back-and-forth motion without a sudden reset. This is ideal for pulse, breathing, and attention-drawing effects like a notification badge or loading indicator.
Combine delay with infinite loops for staggered effects: If you have multiple identical elements that should animate in sequence (like a list of items entering the screen), apply the same animation to each with incrementally larger delays (0s, 0.1s, 0.2s, 0.3s) rather than animating them all simultaneously.
Use the Back (spring) easing for playful UI interactions: The cubic-bezier(0.68, -0.55, 0.27, 1.55) timing function creates an overshoot effect — the element goes slightly past its target before settling. This gives buttons, modals, and popovers a more physical, elastic feel that users often perceive as more engaging.
Respect the prefers-reduced-motion media query: Some users have vestibular disorders or motion sensitivity and configure their OS to minimize motion. Wrap your animations in a @media (prefers-reduced-motion: no-preference) query so they only play for users who are comfortable with motion effects.
Why Use a CSS Animation Generator Online
Writing CSS @keyframes animations from memory requires knowing the exact property names, percentage stops, and shorthand syntax — details that are easy to get wrong under deadline pressure. A CSS animation generator online provides instant visual feedback so you can see the result before copying any code. The live preview eliminates guesswork about whether a 1.5-second ease-in-out bounce looks right, or whether alternate direction actually produces the smooth loop you intended.
Freelance developers use this tool to prototype animation ideas during client calls and deliverable reviews. Design agencies use it to generate animation code that matches specifications from design files exported from Figma or Adobe XD. Students learning CSS use it as an interactive reference to understand how each property affects the visual result. Marketing teams building landing pages use it to add scroll-triggered entrance animations without hiring a specialist animation developer.
Frequently Asked Questions about CSS Animation Generator
Yes. CSS animations defined with @keyframes and the animation property run entirely in the browser's rendering engine without any JavaScript. They start automatically when the CSS rule applies to an element, loop based on the iteration count you specify, and pause or stop based on the animation-play-state property. This makes CSS animations more reliable than JavaScript-based animations for simple effects because they continue even if JavaScript is disabled or encounters an error.
CSS transitions animate between two states and require a trigger — typically a class change, a :hover state, or a :focus state — to activate. They can only interpolate from one value to another. CSS animations use @keyframes to define multiple intermediate states and can run automatically on page load, loop infinitely, reverse direction, and create complex multi-step sequences without any trigger. Use transitions for simple hover effects and use animations for entrance sequences, loading indicators, and looping effects.
The most performant CSS properties to animate are transform (translate, scale, rotate, skew) and opacity. These properties are handled by the browser's compositor thread on the GPU and do not trigger layout recalculation or paint operations. Properties like width, height, margin, padding, and top / left trigger layout recalculation on every frame and can cause frame drops on lower-powered devices. For moving elements, use transform: translate() instead of changing position properties.
No. CSS animations and @keyframes are fully supported in all modern browsers — Chrome, Firefox, Safari, Edge, and Opera — without any vendor prefixes. The -webkit- prefix was required for older versions of Safari (pre-2013) and old Android browsers, but these browsers represent a negligible share of current traffic. The CSS code generated by this tool works in all currently supported browsers without modification.
The alternate direction causes the animation to play forward on odd-numbered iterations and backward on even-numbered iterations. In practice, this means the animation plays from 0% to 100% on the first cycle, then from 100% to 0% on the second cycle, then forward again, and so on. This creates a smooth back-and-forth effect without an abrupt jump back to the start. It is commonly used for pulse, bounce, breathe, and glow effects where you want the element to return to its starting state organically.
Copy the generated CSS using the Copy CSS button. The output contains two parts: the @keyframes block (which defines the animation steps) and a .element rule with the animation property. Paste the @keyframes block anywhere in your stylesheet. Change .element in the second block to the CSS selector of the HTML element you want to animate, and paste that rule into your stylesheet as well. The animation will start as soon as the element matches the selector.
The Back (spring) easing uses a custom cubic-bezier curve — cubic-bezier(0.68, -0.55, 0.27, 1.55) — that overshoots the target value before settling at the final position. For example, a scale animation with this easing will briefly scale the element slightly beyond 100% before settling back to 100%, creating an elastic or spring-like feel. This easing gives UI interactions a more physical, bouncy character that users often perceive as more engaging and modern compared to standard easing functions.
Yes. CSS animations work on all modern mobile browsers including Safari on iOS and Chrome on Android. Animations using transform and opacity are particularly performant on mobile because they are handled by the GPU and do not block the main thread. Keep durations reasonable (0.3–1 second for most UI animations) and avoid animating too many elements simultaneously on mobile, as even GPU-composited animations can drain battery if running continuously on large surfaces.