Keyframe Builder

Visually compose CSS @keyframes animations — define stops along a 0–100 % timeline with opacity, transform, and background-color, then copy the generated CSS.

• →Enable the stops you need (0 %, 25 %, 50 %, 75 %, 100 %) and fill in at least one CSS property per stop.
• →Stick to opacity and transform for smooth 60 fps animations — they are GPU-accelerated in all modern browsers.
• →Use the live preview to iterate: click Replay Preview after each change to see the updated animation.
• →Keep UI micro-interaction durations under 300 ms — longer values feel sluggish.