ComfyUI-SaveCheckpointWithMetadata

Save .safetensors checkpoints with custom metadata and explicit filename behavior in ComfyUI.

• Write exactly the header you want via metadata_json.
• Optional prompt_override to replace the hidden PROMPT.
• Merge mode to include hidden EXTRA_PNGINFO.
• Filename modes:
  • smart_counter: first save uses unsuffixed prefix.safetensors if free, next saves continue from the next free counter without going backwards.
  • no_counter_overwrite: always write to prefix.safetensors and overwrite if it exists.

Install

ComfyUI Manager

• Manager -> Install via Git URL -> paste: https://github.com/a-l-e-x-d-s-9/ComfyUI-SaveCheckpointWithMetadata.git

• Restart ComfyUI.

Manual

cd /path/to/ComfyUI/custom_nodes
git clone https://github.com/<your-account>/ComfyUI-SaveCheckpointWithMetadata.git
# optional deps
python3 -m pip install -r ComfyUI-SaveCheckpointWithMetadata/requirements.txt
# optional post-install hook
python3 ComfyUI-SaveCheckpointWithMetadata/install.py || true