ComfyUI Extension: Seb Nodes

Authored by cyberhirsch

Created

Updated

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Save image node with dynamic paths and an 'Open Folder' button.

Custom Nodes (0)

    README

    Seb Nodes for ComfyUI

    A powerful suite of utility nodes for ComfyUI by Seb (cyberhirsch), designed to streamline your creative process from initial setup to final output. This collection features four essential nodes: Aspect Ratio for perfect image sizing, Unified Prompter for modular prompt building, Switch Mask for dynamic mask selection, and Save Image for advanced file organization.

    📋 Table of Contents

    🚀 Installation

    Recommended: Using ComfyUI-Manager

    1. Install the ComfyUI-Manager if you haven't already.
    2. In your ComfyUI interface, click the Manager button.
    3. Click Install Custom Nodes.
    4. Search for Seb.
    5. Click the Install button next to the package.
    6. Restart ComfyUI completely.

    Manual Installation

    1. Navigate to your ComfyUI installation directory.
    2. Enter the custom_nodes subfolder (e.g., ComfyUI/custom_nodes/).
    3. Open a terminal or command prompt in this directory.
    4. Clone the repository: 
      git clone https://github.com/cyberhirsch/seb_nodes.git
    5. Restart ComfyUI completely.

    📦 The Nodes

    This collection is designed to work together seamlessly, solving common workflow challenges with elegant and powerful solutions.

    1. Aspect Ratio (Seb)

    (Category: utils/aspect_ratio)

    Stop guessing image dimensions. This node intelligently calculates width and height for you, ensuring your generations are perfectly sized and compatible with your models.

    <img src="screenshots/Aspect%20Ratio.png" alt="Screenshot of the Aspect Ratio (Seb) node" width="427">

    Key Features

    • Preset Library: A logically sorted list of common aspect ratios, from tall portrait (9:16) to cinematic widescreen (21:9).
    • Intelligent Sizing Modes:
      • Megapixels: Set a target image complexity (e.g., 1.0 for a ~1MP image) and let the node handle the math across different shapes.
      • Fixed Side: Lock in a specific width or height, and the node calculates the other dimension to match your chosen ratio.
    • Dynamic UI: The interface smartly hides irrelevant options, reducing clutter.
    • Model-Safe Output: A multiple_of setting ensures your final dimensions are divisible by a required number (e.g., 8) to prevent model errors.

    Pro-Tip: Use the Megapixels mode when experimenting with different aspect ratios. It keeps your VRAM usage and generation time consistent, allowing for a fair comparison between compositions.

    2. Unified Prompter (Seb)

    (Category: utils/prompting)

    Build complex, high-quality prompts with an organized, modular system. This node replaces dozens of text boxes with a clean, dropdown-based interface powered by a simple, external JSON file.

    <img src="screenshots/Unified%20Prompter.png" alt="Screenshot of the Unified Prompter (Seb) node" width="591">

    Key Features

    • External JSON Stylesheet: All dropdown options are loaded from unified_prompter_styles.json. Add, edit, and share entire prompt libraries without touching any code.
    • Categorized Modifiers: Organize prompt fragments into logical groups like technique, composition, lighting, and artist.
    • Creative Roulette: Every positive prompt category includes a "Random" option. Let the node surprise you with new style combinations to break creative blocks.
    • Multi-Layered Negatives: Stack up to three negative prompt presets (e.g., a base negative, a model-specific one, and an aesthetic filter) for fine-tuned control.
    • Transparent Output: Outputs the final text prompts as strings, so you can preview exactly what's being sent to the sampler.

    Pro-Tip: Create different style files for different themes (e.g., scifi_styles.json, fantasy_styles.json). Before starting ComfyUI, just rename the one you want to use to unified_prompter_styles.json.

    3. Switch Mask (Seb)

    (Category: mask/util/Seb)

    Automate your masking process for any image shape. This node receives an image and selects the most appropriate mask from a set of eight aspect-ratio-specific inputs.

    <img src="screenshots/Switch%20Mask.png" alt="Screenshot of the Switch Mask (Seb) node" width="301">

    Key Features

    • Dynamic Mask Selection: Automatically detects the incoming image's aspect ratio and outputs the mask from the corresponding input slot.
    • Failsafe Design: If no mask is connected to the best-matching input, the node outputs nothing, preventing errors in your workflow.
    • Clear Feedback: Outputs a text label of the detected aspect ratio (e.g., "16:9") for easy verification.

    Example Workflow: Combine this with a 'Vignette' or 'Blur' node. Create masks for 16:9, 1:1, and 9:16, and connect them to the respective inputs. This node will now automatically apply the correct vignette to any image, making your post-processing workflow universal.

    4. Save Image (Seb)

    (Category: image/save)

    Take full control of your file organization and naming. This node is a super-powered replacement for the default save functionality.

    <img src="screenshots/Save%20Image.png" alt="Screenshot of the Save Image (Seb) node" width="498">

    Key Features

    • Granular File Naming: Construct filenames with a core component, a separator, an optional timestamp, and an automatic batch counter.
    • Dynamic Folder Sorting: Use date and time patterns (e.g., %date:yyyy-MM-dd%) to automatically sort your images into a clean folder structure.
    • Instant Access Button: Includes an "Open Last Output Folder" button directly on the node to immediately navigate to where your files were saved.
    • Metadata Control: Choose whether to embed the full ComfyUI workflow into the saved PNG file.

    Pro-Tip: The filename_core input can be connected to the output of other nodes. For example, connect the seed number from a "Primitive" node to include the seed directly in every filename.

    📄 License

    This project is licensed under the MIT License.