What it does
Three.js is a general-purpose JavaScript 3D library for browser projects. Its core workflow combines a scene, camera, geometry and material, then renders that scene through WebGL or WebGPU. The project also offers SVG and CSS3D renderers as addons. Developers use it to build interactive product views, visual explanations and graphics that would be cumbersome to draw with ordinary page elements.
A useful first experiment is a small scene with one camera, one geometric object and a renderer. The official repository's sample constructs a Scene, a PerspectiveCamera, a BoxGeometry and a mesh material, adds the mesh to the scene, then creates a WebGLRenderer. From there, add a light or texture and connect the renderer to the part of the page that should display the canvas.
Three.js gives you rendering primitives and APIs rather than a visual modeling workspace. You still decide how to size the canvas, move the camera, load assets and handle user input. The project describes WebGL and WebGPU renderers in its current builds; SVG and CSS3D renderers are available as addons. Check the intended browser and device before choosing a rendering path, especially when a project depends on a particular GPU feature.
Strengths
- The library provides scene, camera, geometry, material and rendering building blocks in one JavaScript API.
- The project supports WebGL and WebGPU rendering, with SVG and CSS3D alternatives available as addons.
Watch out for
- A usable scene still needs application code for its camera, sizing, assets, interaction and rendering lifecycle.
- The renderer choice affects browser and device requirements; SVG and CSS3D are addons rather than the project's current core builds.
Best for
- Building interactive 3D product views or visual explanations in a browser.
- Rendering 3D scenes as part of a JavaScript web application.
Sources
- three.js official repository and usage example (Oct 26, 2026)
- three.js documentation index and scene API (Oct 26, 2026)
- three.js MIT license (Oct 26, 2026)