The SaveImageARGB16PNG node provides functionality for saving images as uncompressed PNG files with ARGB16 precision. This node is particularly useful for workflows that require high-quality image saving with metadata such as prompts and additional PNG info.
https://github.com/yolanother/ComfyUI-Save16bitPng
git clone https://github.com/yolanother/ComfyUI-Save16bitPng
comfy node install ComfyUI-Save16bitPng