How to get your GLB files under 5MB for fast web loading

If you're embedding 3D models on websites, file size matters A LOT. Here are the techniques I use to get models under 5MB without destroying quality.

1. Use the Compress tool

The iLove3D compress tool applies Draco compression to mesh data and optimizes textures. This alone usually cuts 50-70% of file size. Always do this as the last step.

2. Reduce texture resolution

Most web models don't need 4K textures. Resize to 1024×1024 for small objects or 2048×2048 for hero models. You can do this in any image editor before applying textures, or just let the compress tool handle it.

3. Decimate your mesh

If your model has more than 100K triangles, your users on mobile are going to have a bad time. Use Blender's Decimate modifier or the remesh tool to bring it down. For product views, 30K-50K triangles is the sweet spot.

4. Remove hidden geometry

Delete faces that the user will never see — the bottom of a shoe, the inside of a closed box, the back of a wall-mounted shelf. This is free file size reduction.

5. Use a single material when possible

Every material in your GLB adds overhead. If you can bake everything into one texture atlas, do it.

Following these steps I regularly get models from 30-40MB down to 2-3MB.