Photo cleanup uses U²-Net-p by Xuebin Qin et al. (Apache 2.0), ONNX model distributed by danielgatis/rembg, and Microsoft ONNX Runtime Web 1.20.1 (MIT). Model source: https://github.com/danielgatis/rembg/releases/download/v0.0.0/u2netp.onnx ; MD5 8e83ca70e441ab06c318d82300c84806. Preprocessing follows rembg U2netpSession. Inference is performed locally in the visitor browser; only the cleaned image is saved. Original image pixels are not redistributed by this implementation. Model and runtime notices accompany the application.