Visually craft CSS keyframe animations with instant preview. Define animation type, duration, timing function, delay, and iteration count, then copy the production-ready CSS.
Open CSS Animation Builder → free, no sign-inCSS keyframe animations have a lot of moving parts: the @keyframes block, the animation property, timing functions, iteration counts, fill modes. Getting them right requires either deep familiarity with the syntax or a lot of save-and-refresh cycles. The CSS Animation Builder lets you define everything visually — animation type, duration, easing, delay, iteration — and see the result instantly before copying the production code.
Web developers adding UI animations to components, designers exploring motion behaviour before handing off, or anyone learning CSS animations who wants to understand what each property does by seeing it change in real time.
No tutorials. No learning curve. Open it and get started.
No server uploads. The generated code includes both the @keyframes definition and the animation shorthand property, copy-ready for your stylesheet.
Completely free. No trial period. No premium tier for basic functionality. No account required. Use it as often as you need.
One job, done well. CSS Animation Builder was built to solve a specific problem cleanly. No feature bloat, no ads, no distractions.
What is a CSS animation?
A CSS animation smoothly transitions an element between styles using @keyframes. It's defined by specifying how the element looks at different percentages of the animation.
What is a timing function?
The timing function controls the speed curve — ease, linear, ease-in, ease-out, and cubic-bezier variants.
What does fill mode do?
Fill mode controls what happens before and after the animation. 'forwards' keeps the animation's end state; 'backwards' applies the start state during a delay.
Can I loop the animation?
Yes — set the iteration count to 'infinite' for continuous looping.
How do I use the CSS in my project?
Add the @keyframes block and the animation shorthand property to the element's CSS class.
Free. Instant. No sign-in. Open it and get the job done.
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