rembg

What rembg is

rembg removes backgrounds from images and can be used as a command-line tool, Python library, HTTP server, or Docker container. It supports single-image and batch-folder processing, watch mode, RGB24 streams, and API access, with PNG as its listed export format. Models cover general images, portraits, clothing, anime, and object segmentation; bria-rmbg is the default local model. For edge refinement, options include color decontamination, alpha matting, and ViTMatte. The documentation describes integrations with FFmpeg RGB24 output, OpenCV, PIL, NumPy, Docker, and its HTTP API. rembg is free, with a free plan, and is licensed under MIT. Local ONNX models download on first use and are stored in the rembg models directory. The listed Python requirement is versions >=3.11 and <3.14, and installation instructions cover CPU, NVIDIA CUDA GPU, and AMD ROCm. The optional withoutBG backend sends images to its servers, with a documented 20 MB maximum upload size. Model weights have separate licenses; commercial use of RMBG-2.0 under the BRIA license requires a paid agreement.