CSS Animation Builder
Pick an effect, tune the timing, and watch it play. Copy the @keyframes and animation shorthand. Everything runs in your browser.
About the CSS Animation Builder
The CSS Animation Builder lets you pick a common effect, adjust the timing, and watch it play on a live preview. It then gives you the @keyframes block and the animation shorthand, ready to paste into your stylesheet. It is built for developers and designers who want a quick, correct starting point for fade, slide, bounce, spin, pulse, and shake effects. Everything runs in your browser, so nothing is uploaded.
How it works
- Pick an effect from the preset list. The preview plays it right away.
- Set the duration, delay, timing function, iteration count, and direction.
- Use Replay to watch the effect again at any time.
- Click Copy to grab the generated @keyframes and animation shorthand.
Features
- Six ready presets: fade, slide, bounce, spin, pulse, and shake.
- Controls for duration, delay, timing function, iteration count, and direction.
- Timing options including ease, linear, the ease variants, and a cubic-bezier overshoot.
- Live preview with a Replay button so you can recheck the result.
- One-click copy of the @keyframes block and animation shorthand.
Frequently asked questions
Is my data sent to a server?
No. The animation is built and previewed entirely in your browser. No data is uploaded or logged.
How do I use the generated CSS?
Paste the @keyframes block into your stylesheet, then apply the animation shorthand to the element you want to animate. The output uses a class named .element, which you can rename to match your markup.
What does iteration count do?
It sets how many times the animation runs. Pick a number for a fixed count, or infinite to loop without stopping.
What is the cubic-bezier timing option?
It defines a custom acceleration curve. The included cubic-bezier value overshoots the end point and settles back, which gives a springy finish. The named options (ease, linear, ease-in, ease-out, ease-in-out) cover the common curves.
Why does the preview not loop?
With an iteration count of 1, the animation plays once. Set the iteration count to infinite to loop it, or use the Replay button to play it again.