Playsaurus Mesh Reduce

A web-based tool for compressing and optimizing glTF Binary (.glb) 3D model files. Achieves significant file size reduction through mesh optimization, vertex quantization, and meshopt compression.

🚀 Try it now: mesh-reduce.labs.playsaurus.com

✨ Features

• Vertex Deduplication - Removes duplicate vertices
• Vertex Cache Optimization - Reorders vertices for better GPU performance
• Quantization - Reduces precision of positions (16-bit), normals (8-bit), and UVs (16-bit)
• Meshopt Compression - Applies EXT_meshopt_compression for additional size reduction
• Texture-Aware Simplification - Preserves detail in areas with high texture complexity
• LOD Generation - Creates multiple levels of detail (100%, 75%, 50%, 25%)
• Texture Resizing - Optional texture downscaling
• Before/After Comparison - Side-by-side 3D viewer with diff visualization

🎮 Usage

1. Open the app in your browser
2. Drag and drop a .glb file onto the drop zone (or click to browse)
3. Adjust compression settings as needed:
   • Simplification - How aggressively to reduce triangle count
   • Texture-Aware - Preserve detail in textured areas
   • Detail Preservation - Threshold for protecting important vertices
   • Texture Resolution - Optionally downscale textures
4. Click Compress
5. Review the before/after comparison
6. Select desired LOD level
7. Click Download Optimized to save

📦 Output Compatibility

The optimized GLB files use standard glTF 2.0 extensions:

• KHR_mesh_quantization - For quantized vertex attributes
• EXT_meshopt_compression - For buffer compression

These are supported by:

• Unity (glTFast, UnityGLTF)
• Unreal Engine
• Babylon.js
• Three.js
• Most modern glTF viewers

👨‍💻 Contributing

To contribute to Playsaurus Mesh Reduce, please read the contributing documentation.

🔒 License

MIT