Private, browser-local utility
CSS Keyframe Animation Generator
Configure bounded animation stops, preview motion, and generate copy-ready CSS keyframes locally.
Inputs and results stay in this browser tab. Nothing is uploaded, fetched, or stored.
Loading local tool…
Generated CSS
Bounded animation model
V1 uses three explicit, uniquely sorted stops and structured controls for translation, scale, rotation, and opacity. The engine accepts 2–6 stops, validates a constrained CSS identifier, and bounds duration, delay, iteration count, and property values. Timing functions are linear, ease, ease-in, ease-out, or ease-in-out.
The preview uses the Web Animations API with synthetic content and starts only after interaction. Pause is always available, and the interface respects the browser’s reduced-motion preference by avoiding autoplay.