animation-tool-router

name	animation-tool-router
description	Use when planning or implementing website motion, scroll choreography, microinteractions, page transitions, text reveals, pinned sections, smooth scrolling, Lottie, Three.js/R3F, WebGL, or animation-heavy premium sites. Chooses the lightest appropriate tool and defines reduced-motion fallbacks.

Animation Tool Router

Use this skill to choose motion tools by purpose, not hype.

Routing

• CSS transitions: hover/focus states, small fades, transforms, simple menus.
• Motion: React component animation, layout transitions, presence, gestures, small scroll reveals.
• GSAP: precise timelines, pinned scroll scenes, split text, SVG paths, complex choreography.
• Lenis: smooth scroll feel when the project can support it and anchor/modal behavior is handled.
• Lottie: exported vector motion when file weight and accessibility are acceptable.
• Three.js/R3F: real 3D product/scene work, not decoration.
• No dependency: static content where motion would distract or harm performance.

Motion Requirements

Define:

• purpose: reveal, continuity, depth, state, tactility, narrative, or product explanation
• trigger: load, hover, focus, click, route, scroll, drag, or viewport
• duration/easing
• reduced-motion fallback
• cleanup/unmount behavior
• performance risks

Avoid

• animation because the page is otherwise generic
• scroll hijacking
• motion that hides content
• parallax that causes nausea or jank
• WebGL scenes that are blank on mobile