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View guide →Turn ComfyUI node workflows into runnable Python scripts you can automate and rerun anywhere.
ComfyUI-to-Python-Extension is an open-source image project by pydn (pydn/ComfyUI-to-Python-Extension on GitHub). It has 2,387 GitHub stars and 212 forks, is released under the MIT license, and was last updated on GitHub on 10 May 2026.
Decide which ComfyUI workflow you want to run as code, outside the node editor.
Clone the repository, ideally straight into ComfyUI's custom_nodes folder so ComfyUI can discover it as an extension.
Install the extension into the same Python environment that launches ComfyUI, set COMFYUI_PATH if the repo lives elsewhere, and restart ComfyUI.
Build a workflow in ComfyUI, choose File -> Save As Script to download a Python version, or export in API format and convert it with the CLI.
Current ComfyUI builds can download a generated .py file directly from File -> Save As Script, with the workflow metadata kept for drag-and-drop reimport.
Convert a saved API-format workflow JSON into Python with the comfyui_to_python module, choosing input file, output file, and queue size.
Clone into custom_nodes, symlink the repo in, or register its parent directory through extra_model_paths.yaml search paths.
Generated scripts bootstrap through ComfyUI itself and accept its usual memory flags such as --highvram, --lowvram, and --cpu.
Exported scripts clean up models and caches after a run, and can unload models aggressively when embedded in a host application.
Documented setup for the Windows portable build using its embedded Python interpreter, plus uv-based installs for source checkouts.
Clone it where ComfyUI can find it, or anywhere if you only need the CLI exporter.
git clone https://github.com/pydn/ComfyUI-to-Python-Extension.git
cd ComfyUI-to-Python-ExtensionSync the project with uv and tell the exporter where your ComfyUI checkout lives.
uv sync
export COMFYUI_PATH=/path/to/ComfyUIExport a workflow in API format from ComfyUI, convert it, then run the generated script.
uv run python -m comfyui_to_python --input_file workflow_api.json --output_file workflow_api.py
python workflow_api.pyIt is maintained by pydn on GitHub, as an open-source community project.
Yes. It is MIT-licensed, so you can use, modify, and redistribute it freely, including commercially.
No API key is involved. You do need a working ComfyUI installation with its own models and runtime dependencies such as PyTorch.
ComfyUI itself is the visual node editor; this extension is the bridge that converts what you build there into standalone Python, rather than a competing editor.
Clone it into ComfyUI/custom_nodes, install it into ComfyUI's Python environment, restart ComfyUI, then use File -> Save As Script on any workflow.
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