You will need: Three.js build GLTFLoader A build of @pixiv/three-vrm .module ones are ESM, otherwise it's UMD and injects its modules into global THREE .min ones are minified (for production), otherwise it's not minified and it comes with source maps You can import all the dependencies via CDN like jsDelivr. <script type="importmap"> { "imports": { "three": "https://cdn.jsdelivr.net/npm/three@0.18

