skills/3d-web-experience/SKILL.md
Expert in building 3D experiences for the web - Three.js, React Three Fiber, Spline, WebGL, and interactive 3D scenes. Covers product configurators, 3D portfolios, immersive websites, and bringing dep
npx skillsauth add ranbot-ai/awesome-skills 3d-web-experienceInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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Expert in building 3D experiences for the web - Three.js, React Three Fiber, Spline, WebGL, and interactive 3D scenes. Covers product configurators, 3D portfolios, immersive websites, and bringing depth to web experiences.
Role: 3D Web Experience Architect
You bring the third dimension to the web. You know when 3D enhances and when it's just showing off. You balance visual impact with performance. You make 3D accessible to users who've never touched a 3D app. You create moments of wonder without sacrificing usability.
Choosing the right 3D approach
When to use: When starting a 3D web project
| Tool | Best For | Learning Curve | Control | |------|----------|----------------|---------| | Spline | Quick prototypes, designers | Low | Medium | | React Three Fiber | React apps, complex scenes | Medium | High | | Three.js vanilla | Max control, non-React | High | Maximum | | Babylon.js | Games, heavy 3D | High | Maximum |
Need quick 3D element?
└── Yes → Spline
└── No → Continue
Using React?
└── Yes → React Three Fiber
└── No → Continue
Need max performance/control?
└── Yes → Three.js vanilla
└── No → Spline or R3F
import Spline from '@splinetool/react-spline';
export default function Scene() {
return (
<Spline scene="https://prod.spline.design/xxx/scene.splinecode" />
);
}
import { Canvas } from '@react-three/fiber';
import { OrbitControls, useGLTF } from '@react-three/drei';
function Model() {
const { scene } = useGLTF('/model.glb');
return <primitive object={scene} />;
}
export default function Scene() {
return (
<Canvas>
<ambientLight />
<Model />
<OrbitControls />
</Canvas>
);
}
Getting models web-ready
When to use: When preparing 3D assets
| Format | Use Case | Size | |--------|----------|------| | GLB/GLTF | Standard web 3D | Smallest | | FBX | From 3D software | Large | | OBJ | Simple meshes | Medium | | USDZ | Apple AR | Medium |
1. Model in Blender/etc
2. Reduce poly count (< 100K for web)
3. Bake textures (combine materials)
4. Export as GLB
5. Compress with gltf-transform
6. Test file size (< 5MB ideal)
# Install gltf-transform
npm install -g @gltf-transform/cli
# Compress model
gltf-transform optimize input.glb output.glb \
--compress draco \
--texture-compress webp
import { useGLTF, useProgress, Html } from '@react-three/drei';
import { Suspense } from 'react';
function Loader() {
const { progress } = useProgress();
return <Html center>{progress.toFixed(0)}%</Html>;
}
export default function Scene() {
return (
<Canvas>
<Suspense fallback={<Loader />}>
<Model />
</Suspense>
</Canvas>
);
}
3D that responds to scroll
When to use: When integrating 3D with scroll
import { ScrollControls, useScroll } from '@react-three/drei';
import { useFrame } from '@react-three/fiber';
function RotatingModel() {
const scroll = useScroll();
const ref = useRef();
useFrame(() => {
// Rotate based on scroll position
ref.current.rotation.y = scroll.offset * Math.PI * 2;
});
return <mesh ref={ref}>...</mesh>;
}
export default function Scene() {
return (
<Canvas>
<ScrollControls pages={3}>
<RotatingModel />
</ScrollControls>
</Canvas>
);
}
import gsap from 'gsap';
import ScrollTrigger from 'gsap/ScrollTrigger';
gsap.to(camera.position, {
scrollTrigger: {
trigger: '.section',
scrub: true,
},
z: 5,
y: 2,
});
Keeping 3D fast
When to use: Always - 3D is expensive
| Device | Target FPS | Max Triangles | |--------|------------|---------------| | Desktop | 60fps | 500K | | Mobile | 30-60fps | 100K | | Low-end | 30fps | 50K |
// 1. Use instances for repeated objects
import { Instances, Instance } from '@react-three/drei';
// 2. Limit lights
<ambientLight intensity={0.5} />
<directionalLight /> // Just one
// 3. Use LOD (Level of Detail)
import { LOD } from 'three';
// 4. Lazy load models
c
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