Build Immersive 3D Web Experiences

3D Web Experience guides the implementation of interactive scenes for websites, product configurators, and immersive portfolios. Its scope includes Three.js, React Three Fiber, Spline, WebGL, GLSL shaders, model preparation, and optimization. Stack selection starts with the interaction and maintenance requirements: Spline suits quick prototypes and design-authored scenes, React Three Fiber fits React applications with complex scenes, and vanilla Three.js offers maximum control outside React. Babylon.js is also compared for games and heavy 3D.

The model workflow establishes a triangle and draw-call budget on representative devices before baking textures, combining materials, exporting GLB, and compressing assets. GLB/GLTF is the standard web option; FBX, OBJ, and USDZ are discussed for other use cases. Compression must be checked for decoder compatibility and visual quality with the installed CLI version. With a reviewed, locally pinned gltf-transform installation, the compression step is:

./node_modules/.bin/gltf-transform optimize input.glb output.glb \
  --compress draco \
  --texture-compress webp

Scroll interactions cover moving a camera, rotating a model, revealing elements, changing materials, and exploded views. Performance work measures transfer size, decode time, memory, GPU time, draw calls, and frame time. Example frame-rate and triangle budgets are starting points rather than hardware limits or guarantees. Repeated objects can use instances; other techniques include limiting lights, levels of detail, lazy loading, and a conservative initial device pixel ratio. Actual measurements determine the appropriate resolution budget.

Use the skill when a navigable product model helps a purchase decision, a portfolio benefits from scroll-linked depth, or an existing scene has loading, input, or frame-time problems. Keep product descriptions, variant controls, and purchase actions in accessible DOM content so the core task remains usable without a canvas. Respect reduced-motion preferences and retain ordinary controls.

Assets and dependencies are prerequisites supplied by the project. Illustrative scene URLs require replacement with authorized assets. A rendered canvas alone does not establish accessibility or performance; validate keyboard operation, zoom, reduced motion, and unavailable WebGL on the real target environment.

Work starts with the desired scene interaction, the application's framework, prepared models, and device budgets. React loading examples require the installed React, R3F, and drei versions plus an actual model asset. The resulting implementation combines scene setup, interaction, loading feedback, optimization, and fallback behavior. Validation checks flag missing loading indicators, missing WebGL alternatives, uncompressed models, scroll-blocking OrbitControls, and excessive mobile DPR.

React Three Fiber examples use Canvas, drei's useGLTF and useProgress, and React Suspense. ScrollControls and useScroll connect scroll position to scene changes. GSAP ScrollTrigger can animate a supplied camera, with cleanup on unmount. Suspense handles loading; an application error boundary handles asset failures and context crashes, while Canvas supplies a DOM fallback when GL cannot initialize. OrbitControls zoom can be disabled to avoid capturing page scroll.