ComfyUI - Getting Started : Episode 2 - Custom Nodes Everyone Should Have

Scott Detweiler
15 Jul 202309:28

TLDRIn this informative video, the presenter guides viewers on enhancing their Comfy UI experience by managing models and custom nodes effectively. They discuss the importance of avoiding model duplication and demonstrate how to utilize the 'extra modelpaths.yaml' file for streamlined model management. The video also introduces the Comfy UI manager for easy extension and node installation, and highlights the efficiency nodes, nested node builder, and the 'Dirty' undo/redo feature. The presenter's aim is to help users optimize their workflow and make graph management more efficient.


  • 📂 Efficient Model Management: Utilize the 'extra modelpaths.yaml' file to point to your local installation of Automatic 1111 models, preventing duplication and reducing storage footprint.
  • 🔄 Restart Comfy UI: After updating the YAML file, restart Comfy UI to ensure it recognizes and utilizes the new model paths correctly.
  • 🛠️ Custom Nodes Installation: Navigate to the 'custom nodes' folder and install the Comfy UI Manager to streamline the process of adding extensions and custom nodes.
  • 🔗 Git Integration: Use Git to pull updates from the repository for custom nodes and to keep your files managed effectively.
  • 🔄 Git Pull Command: Execute 'git pull' in the command window to update repositories and custom nodes from their respective directories.
  • 📈 Manager Node Usage: Once installed, the Manager node in Comfy UI simplifies the process of fetching updates and installing additional models and custom nodes.
  • 🎯 Efficiency Nodes: Implement efficiency nodes to reduce the number of nodes in your graph by combining multiple functionalities into one, streamlining your workflow.
  • 🔌 Nested Node Builder: Combine frequently used nodes into a single node for a cleaner and more organized graph layout.
  • 🚫 Dirty Undo/Redo: Utilize the 'Dirty Undo/Redo' node for a more reliable way to revert changes in your graph, despite its memory-intensive approach.
  • 🔍 Node Installation Troubleshooting: Use the 'Install Missing Custom Nodes' feature to identify and fix missing nodes in your graph.
  • 📹 Tutorial Series Progression: Future tutorials will build upon the concepts introduced, including the use of custom nodes and efficient workflows.

Q & A

  • What is the main focus of the video?

    -The main focus of the video is to cover advanced setup and housekeeping tips for the Comfy UI to make graph management more efficient and to avoid duplication of models.

  • How can you avoid having duplicate models in Comfy UI?

    -To avoid duplicate models, you can point the 'extra_modelpaths.yaml' file in the base directory of Comfy UI to your local installation of Automatic 1111. This way, Comfy UI will look in that directory for models, minimizing the footprint on your drives.

  • What is the role of the 'Comfy UI Manager' node?

    -The 'Comfy UI Manager' node acts as an overall manager, helping to install extensions and custom nodes more easily, as well as update Comfy UI itself.

  • How do you install custom nodes using the 'git pull' method?

    -To install custom nodes using 'git pull', navigate to the custom node directory, open a command window, and use the command 'git pull'. This assumes that 'git' is installed on your system.

  • What are the benefits of using the Efficiency nodes?

    -Efficiency nodes help reduce the number of nodes in a graph by combining multiple functions into one, minimizing the need to drag extra nodes out to see previews and making the graph more organized.

  • How does the Nested Node Builder work?

    -The Nested Node Builder allows you to combine multiple nodes into a single node by selecting the nodes, using the 'Nest Selected Nodes' option, and giving the combined node a name. This helps to streamline and organize your graph.

  • What is the Dirty Undo/Redo node and why is it useful?

    -The Dirty Undo/Redo node is a tool that stores the entire graph in memory, allowing for undo and redo functionality. It's useful because the base application's undo/redo can sometimes be unreliable, and this node provides a more consistent way to revert changes.

  • How do you install missing custom nodes in a graph?

    -To install missing custom nodes, click on the 'Install Missing Custom Nodes' button in Comfy UI. It will bring up a search dialog showing which nodes need to be installed to fix the graph.

  • What happens when a node in a graph is indicated by red color?

    -When a node in a graph is indicated by red color, it means that the node is missing and needs to be installed to ensure the graph functions correctly.

  • How can you use the nested node you've created?

    -After creating a nested node, it becomes available in the 'Nested Nodes' directory within your custom nodes folder. You can use it again by right-clicking, adding a node, going to 'Nested Nodes', and selecting the node you've created.

  • What is the recommended approach when using the Nested Node Builder?

    -While the Nested Node Builder is useful for streamlining graphs, it's recommended not to go overboard with it. Combining too many functions into one node can defeat the purpose of keeping the graph granular and easy to manage.



🛠️ Setting Up for Efficient Graph Management

This paragraph discusses the process of organizing and setting up a more advanced and efficient workflow within a UI platform, presumably for graph creation and management. The speaker begins by addressing the issue of duplicate models and suggests a solution using a YAML file to point to a local installation of Automatic 1111 models. This approach helps to minimize storage footprint. The speaker then introduces the concept of a 'manager' node, which simplifies the installation of extensions and custom nodes, and provides a link for further information. The paragraph concludes with a brief tutorial on installing the manager and other custom nodes using a command-line method with 'git pull', emphasizing the utility of this approach for managing and updating nodes within the system.


🎨 Enhancing Workflow with Custom Nodes and Extensions

The second paragraph delves into the practical application of custom nodes and extensions to enhance the user's workflow. The speaker highlights the importance of certain custom nodes, such as the manager node discussed earlier, and the efficiency nodes that help reduce clutter in the graph by combining multiple functions into one. The speaker also introduces the nested node builder, which allows users to combine frequently used nodes into a single, reusable control. Lastly, the 'dirty undo/redo' feature is mentioned, which, despite its unpolished nature, provides a useful tool for navigating through the application's sometimes finicky undo/redo functionality. The paragraph concludes with a brief demonstration of how these nodes and extensions can streamline the graph creation process and improve overall efficiency.



💡Comfy UI

Comfy UI refers to a user interface designed for ease of use and efficiency, which is the central theme of the video. It is a system that allows for the management and organization of complex data or processes, such as graph creation and manipulation. In the context of the video, the speaker is discussing how to enhance the Comfy UI experience by setting up the environment to avoid duplication of models and to manage extensions and custom nodes effectively.

💡YAML file

A YAML (YAML Ain't Markup Language) file is a human-readable data serialization format that is used for configuration files and data exchange between languages. In the video, the 'extra modelpaths.yaml' file is a specific YAML file that allows users to define additional paths for Comfy UI to search for models, thereby avoiding the duplication of large model files and managing storage space efficiently.

💡Automatic 1111

Automatic 1111 is a software or system that seems to be related to machine learning models, as indicated by the context of the discussion. The video suggests that it is common to have large model checkpoints associated with Automatic 1111. The integration with Comfy UI allows for efficient management of these models without taking up unnecessary space on the drive.

💡Custom Nodes

Custom Nodes refer to user-created components or building blocks within the Comfy UI environment. These nodes can be tailored to specific tasks or workflows, allowing for greater flexibility and efficiency in graph creation and management. The video emphasizes the importance of installing and managing custom nodes to enhance the functionality of the UI and to organize complex processes more effectively.

💡Efficiency Nodes

Efficiency Nodes are a type of custom node in Comfy UI designed to streamline the workflow by reducing the number of unnecessary nodes in a graph. They combine multiple functions into one, minimizing the clutter and making the graph more manageable. The video highlights the use of Efficiency Nodes as a way to improve the efficiency of graph creation and maintenance.

💡Nested Node Builder

Nested Node Builder is a custom node in Comfy UI that enables users to combine multiple individual nodes into a single, more comprehensive node. This tool is used to create a more organized and efficient workflow by reducing the complexity of the graph and reusing common node combinations.


Git is a distributed version control system that allows developers to track changes in the code and collaborate on projects. In the context of the video, Git is used for managing custom nodes and extensions within the Comfy UI environment. It enables users to pull updates from a repository and maintain the latest versions of their tools.


In the context of the video, a 'Graph' refers to a visual representation of a workflow or a network of interconnected nodes within the Comfy UI. These graphs are used to organize and execute complex processes, such as machine learning models or data pipelines. The video focuses on how to manage and optimize these graphs for better efficiency and ease of use.


Undo/Redo is a feature in many software applications that allows users to reverse or reapply their recent actions. In the video, 'Dirty Undo/Redo' is a custom node in Comfy UI that provides this functionality, albeit in a 'dirty' or less elegant but effective manner. It is highlighted as a useful tool for correcting mistakes or reverting changes within the graph.

💡Manager Button

The 'Manager Button' in Comfy UI is a feature that provides access to various management functions, such as fetching updates and installing additional models or custom nodes. It serves as a central hub for maintaining and enhancing the Comfy UI environment, making it easier for users to keep their tools up-to-date and organized.


Installation in the context of the video refers to the process of adding new functionality, extensions, or custom nodes to the Comfy UI environment. It is a crucial step for enhancing the capabilities of the system and ensuring that users have access to the latest features and tools.


Building upon the comfy UI episode one to explore advanced setup for graph growth and efficiency.

Managing model duplication by utilizing a yaml file to point to local installs and minimize drive footprint.

Introducing the custom nodes folder and the installation of the Comfy UI Manager for easier extension and node management.

Using Git for powerful source management and the ability to update files with a simple 'git pull'.

Highlighting the Efficiency Nodes to reduce the number of nodes in graphs by combining functionalities.

Explaining how the Nested Node Builder allows for the combination of multiple nodes into a single node for streamlined workflows.

Discussing the Dirty Undo/Redo node, which stores the entire graph in memory for better control over changes.

Addressing the installation of missing custom nodes for troubleshooting and maintaining graph integrity.

Demonstrating the use of Efficiency Nodes to streamline graphing and previewing without unnecessary nodes.

Showcasing the Nested Node feature to combine frequently used nodes into one for repeated use.

Emphasizing the practical application of custom nodes for enhancing productivity and graph organization.

Providing a method for Brute Force installation of custom nodes using Git and the command line.

Exploring the Manager's capabilities for fetching updates and installing additional models and custom nodes.

Discussing the importance of having the right set of custom nodes installed for effective workflow management.

Outlining the process of updating Automatic 1111 using Git pull for continuous integration with the latest changes.