To upload GLTF 3D models for web viewing, optimize the model (e.g., reduce polygons or compress textures) then use a web-compatible tool or platform to host and display it.
Optimize first—smaller files ensure faster load times for web users. For developers, libraries like Three.js use its GLTFLoader to load GLTF files directly into a webpage. For non-developers, platforms like Sketchfab let you upload GLTF, generate an embed code, and add the model to your site without coding.
If you’re new to web development, try no-code platforms like Sketchfab—they handle rendering automatically, so you just upload the GLTF and paste the embed code into your webpage.