Drop your .glb below to see exactly what's making it heavy — and how much smaller it can realistically get.
Drop a 3D model to grade it
or click to browse — GLB or glTF, up to 300 MB. It's graded in your browser; the file never leaves your device.
A 40 MB GLB can take 10+ seconds to appear on a mobile connection, and most visitors leave before it finishes loading. The analyzer pinpoints the real culprits — oversized textures, uncompressed geometry, duplicate materials — so you fix what actually moves the needle.
Almost all GLB bloat comes from two places: textures and geometry. A single 4096×4096 PNG can weigh more than your entire mesh, and high-poly models exported straight from CAD or sculpting tools carry millions of triangles the web never needs.
Most exporters also skip compression entirely. Without Draco or Meshopt on geometry and KTX2 on textures, you ship raw data that could be 5–10× smaller with no visible quality loss.
1. Compress textures to KTX2 (Basis Universal) and cap resolution at 1024–2048px. 2. Apply Draco or Meshopt geometry compression. 3. Decimate high-poly meshes and add LODs. 4. Remove duplicate materials and unused data. 5. Resize textures to match how large they actually appear on screen.
The analyzer flags which of these apply to your specific model and estimates the impact, so you don't waste time on changes that won't help.
Send us the file and we'll return an optimized GLB — typically 70–90% smaller — that keeps its visual quality. Free quote, no commitment.
Draco/Meshopt geometry, KTX2 textures and clean decimation — without visible quality loss.
Optimized to load fast and render smoothly on phones, not just high-end desktops.
We protect silhouettes, UVs and materials so the model still looks like your model.
For product viewers and most web use, aim for under ~5 MB. Hero or configurator assets can go higher, but anything over ~20 MB will frustrate mobile users.
Done correctly, no. KTX2 texture compression and Draco geometry compression are near-lossless, and most size comes from data the viewer never needs at full resolution.