To save PLY 3D models for AR, use binary PLY format (faster mobile loading), reduce polygon count (prevents lag), and include UV-mapped textures (for realistic visuals).
Binary PLY minimizes file size—critical for phone-based AR—while fewer polygons ensure smooth real-time rendering. UV maps make sure textures align correctly when the model overlays real-world scenes.
In Blender: Export PLY with "Binary" selected, use the Decimate modifier to lower polygons, and test in Google’s Model Viewer (a web AR tool) to confirm functionality.