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React Three Fiber vs Three.js: Which Should You Learn First?

#threejs #react #webdev #javascript

If you’re getting into 3D on the web, you’ve probably hit this question fast: should I learn Three.js or React Three Fiber?

The short answer: it depends on where you’re starting from. Here’s how to decide.

What’s the Difference?

Three.js is the foundation. It’s a JavaScript library that sits on top of WebGL and lets you build 3D scenes without writing raw GPU code. It’s framework-agnostic — works with vanilla JS, Vue, Svelte, whatever.

React Three Fiber (R3F) is a React renderer for Three.js. It doesn’t replace Three.js — it wraps it. Under the hood, R3F is still Three.js. The difference is how you write it.

Here’s the same rotating cube in both:

Three.js (imperative):

const geometry = new THREE.BoxGeometry()
const material = new THREE.MeshStandardMaterial({ color: '#c8ff00' })
const cube = new THREE.Mesh(geometry, material)
scene.add(cube)

function animate() {
  requestAnimationFrame(animate)
  cube.rotation.x += 0.01
  renderer.render(scene, camera)
}
animate()
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React Three Fiber (declarative):

import { useFrame } from '@react-three/fiber'
import { useRef } from 'react'

function Cube() {
  const ref = useRef()
  useFrame(() => { ref.current.rotation.x += 0.01 })

  return (
    <mesh ref={ref}>
      <boxGeometry />
      <meshStandardMaterial color="#c8ff00" />
    </mesh>
  )
}
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Same result. Very different mental model.

Learn Three.js First If…

You’re new to 3D entirely.
Three.js forces you to understand the fundamentals: scenes, cameras, renderers, geometries, materials, lights. These concepts exist in R3F too, but they’re abstracted. Learning Three.js first means you actually know what’s happening under the hood.

You’re not using React.
R3F only makes sense in a React project. If you’re working with vanilla JS, Vue, or any other stack, Three.js is your answer.

You want maximum control.
Three.js gives you direct access to every WebGL primitive. For highly optimized or unusual rendering requirements, that control matters.

Learn React Three Fiber First If…

You already know React.
If hooks, components, and JSX are second nature to you, R3F will feel immediately intuitive. You can focus on learning 3D concepts without also learning a new imperative programming style.

You’re building a React app.
R3F integrates seamlessly with React state, routing, and the rest of your component tree. Managing 3D objects as React components is genuinely ergonomic.

You want to move fast.
The R3F ecosystem — especially @react-three/drei — gives you ready-made components for cameras, controls, environments, and effects. Things that take 50 lines in vanilla Three.js take 2 lines in R3F.

The Honest Take

Most working developers who use R3F learned Three.js first — even briefly. Understanding what a Scene, Camera, and Renderer actually are makes R3F much less magical and much more controllable.

That said, if you’re a React developer who wants to add 3D to a project now, starting with R3F is completely valid. You’ll pick up the Three.js concepts along the way.

The recommended path:

  1. Spend a weekend with raw Three.js — build a scene, add lights, move a camera
  2. Switch to R3F for everything after that

Quick Comparison

Three.js React Three Fiber
Style Imperative Declarative (JSX)
Framework Agnostic React only
Learning curve Moderate Lower (if you know React)
Performance High Equivalent — components render outside React, no overhead
Ecosystem Mature Growing fast
Control Full Full (it’s still Three.js)
Best for Any stack, deep control React projects, fast iteration

Want a Head Start?

If you’ve decided to go the R3F route and want to skip the boilerplate, I put together a cheat sheet with the patterns I use most — hooks, camera setup, lighting, performance tips, and common drei components:

👉 R3F Cheat Sheet on Gumroad — $7

It’s the reference I wish I had when I started.

Which did you start with — Three.js or R3F? Drop a comment below.

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