An open-source desktop workspace enables end-to-end quantization of large language models to GGUF, MLX, and ONNX formats. Users can load local Safetensors or Hugging Face models, perform guided step-by-step conversions, visualize model changes, and publish results to Hugging Face with auto-generated model cards. The tool is licensed under Apache 2.0 and has been primarily tested on Apple Silicon.