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Rapidly Build Interactive 3D Apps for the Web

Threlte is a Svelte library that simplifies creating 3D apps for the web. It provides a declarative, type-safe, reactive and interactive API out-of-the-box.

Threlte's 3D rendering is powered by Three.js, and it also provides a physics engine through Rapier and an animation studio via Theatre.js; see packages for details.

Check out our documentation and our Discord community.



For a quick interactive setup of a fresh Threlte project, run:

npm create threlte my-project

Alternatively you can check out the full installation instructions.


To get a hang of the basics, we recommend following our introductory tutorial.


Have questions? Feel free to ask in our Discord support forum.


  • Clean API transparently exposing all Three.js objects through declarative API.

  • Hooks providing easy access to low-level contexts like animation frames and the rendering engine.

  • Plugins making it easy to extend Threlte with custom code and logic.

  • Events enabling robust and Svelte-native access to state transformations in your scenes.

  • Interactivity makes it easy to react to user inputs on 3D objects.


Threlte is comprised of six distinct packages to allow you to import only what you need:


Contributions are what make the open source community such an amazing place to learn, inspire, and create. Any contributions you make are greatly appreciated.

  • Filing Issues - if you have feature requestions or you think you spotted a bug, submit an issue.
  • Contributing Code - if you would like to drop us a PR, read the contribution guide first.


Powered by Vercel


The MIT License (MIT). Please see the License File for more information.