The best way to reduce a building’s 3D model is to combine geometry simplification and texture optimization while retaining key structural details—this balances file size and usability.
- **Simplify geometry**: Use decimation (lowering polygon count) or Level of Detail (LOD) levels to remove redundant data. Tools like Blender’s Decimate modifier or AutoCAD’s Purge command work well for beginners.
- **Optimize textures**: Resize large images or use compression (e.g., JPEG) to shrink file size—keep essential details (facade, windows) clear.
Test the model in its target use case (AR/VR, BIM, visualization) to ensure performance improves without losing critical features (wall layouts, door positions). Start small and verify results step-by-step to avoid mistakes.