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ComfyUI Cleaner - Speed up your ComfyUI by disabling unused custom nodes

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VU

Vundarlo10

Feb 22, 2026

(Updated: a month ago)

tool guide
comfyuicustom nodes
ComfyUI Cleaner - Speed up your ComfyUI by disabling unused custom nodes

🧹 ComfyUI Cleaner

Speed up your ComfyUI startup and reduce memory overhead by disabling unused custom nodes.

License: MITPython 3.9+

ComfyUI-Cleaner: Search and delete unused ComfyUI Custom Nodes <- LINK

Have you ever installed dozens of custom node extensions only to forget which ones you actually use? ComfyUI Cleaner scans your workflow JSON files, identifies every node type you've ever used, and cross-references them with your installed extensions. It then helps you move unused extensions to a backup folder, keeping your ComfyUI lean and fast.

✨ Features

  • Intelligence: Scans all .json workflows in your user/workflows directory.

  • Source-Aware: Doesn't just look at folder names; it scans the extension's source code (.py, .js) to find node definitions.

  • Safe: Moves extensions to a custom_nodes_backup folder instead of deleting them. You can restore them instantly.

  • Always-Keep List: Automatically ignores essential extensions like ComfyUI-Manager and Custom-Scripts.

  • Fast: Analyzes hundreds of nodes and extensions in seconds.

🚀 Getting Started

Prerequisites

  • Python 3.9 or higher.

  • A ComfyUI installation.

Installation

  1. Clone this repository or download clean_comfyui.py.

  2. Place the script in your main ComfyUI folder (the one containing main.py).

Usage

1. Dry Run (See what would be removed)

python clean_comfyui.py

2. Backup Unused Nodes

python clean_comfyui.py --backup

3. Specify ComfyUI Path (If running from elsewhere)

python clean_comfyui.py --root "C:/Path/To/ComfyUI" --backup

🛠️ How it Works

  1. Workflow Analysis: The script recursively scans your workflow directories to build a unique list of every used node_type (e.g., KSampler, FaceDetailer).

  2. Extension Mapping: It iterates through every folder in custom_nodes and searches its files for those node type strings.

  3. Redundancy Detection: If an extension doesn't contain any strings matching your used nodes, it's marked as unused.

  4. Cleanup: Unused extensions are moved out of the active loading directory, so ComfyUI doesn't waste time importing them.

⚠️ Disclaimer

This tool moves files on your system. While it uses a "backup" approach, always ensure you have a fallback of your important data. The author is not responsible for any issues arising from the use of this script.

📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

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