GLB Compressor
Shrink GLB models for the web: dedup and quantize geometry, optionally apply meshopt compression, and re-encode textures as WebP. The output is re-imported to verify it loads.
Drag & drop your GLB file here
Shrink GLB models with mesh quantization and WebP texture compression. Processed locally in your browser.
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GLB (binary glTF)
How It Works
Upload a GLB
Drop in a binary glTF file with embedded textures and buffers.
Pick your trade-offs
WebP texture quality and max size, quantization for compatibility, or meshopt for minimum size.
Download and ship
The compressed file is re-imported and verified before you download it.
Frequently Asked Questions
Three things: textures re-encoded as WebP and capped to a sensible resolution (usually the biggest win), vertex quantization that stores positions and normals in fewer bits, and optional meshopt compression on top. Duplicate and unused data is also stripped.
With the default settings, yes — quantization (KHR_mesh_quantization) and WebP textures (EXT_texture_webp) are supported by Three.js, Babylon.js, and modern engines. Meshopt compression needs a MeshoptDecoder wired into the loader, which is why it's off by default.
Quantization is visually lossless at default settings. Texture quality is the lever you control — the quality slider trades file size against texture sharpness, and normal maps automatically get extra quality since they show artifacts sooner.
Files that are already Draco-compressed can't currently be read — decompress them in your DCC tool or gltf-transform CLI first, then compress here.