What Size are 3D PDF files from STL Models?
PDF3D tools generally create 3D PDF files about 20 – 25 times smaller than the equivalent binary STL 3D model files. For instance, a binary STL with 1 million triangle faces is typically 90 Mb. Converted to 3D PDF the model is about 4 Mb. This assumes PRC highly compressed tessellation mode. Other encoding methods (such as U3D) will produce larger files.