ComfyUI Extension: ComfyUI PK Load Image Paste

Authored by smbdsbrain

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A ComfyUI custom node that extends the standard Load Image functionality with a convenient 'Paste from clipboard' button. This allows you to directly paste images from your clipboard without workflow conflicts, ensuring only images are pasted.

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    README

    ComfyUI PK Load Image Paste

    A ComfyUI custom node that extends the standard Load Image functionality with a convenient "Paste from clipboard" button. This allows you to directly paste images from your clipboard without workflow conflicts, ensuring only images are pasted.

    Features

    • Enhanced Load Image Node: All standard Load Image functionality
    • Clipboard Integration: Direct paste from clipboard with a single button click
    • Conflict Prevention: Avoids workflow pasting conflicts by specifically handling images

    Requirements

    • ComfyUI
    • Modern web browser with Clipboard API support (Chrome, Firefox, Safari, Edge)

    Installation

    Manual Installation via Git

    1. Navigate to your ComfyUI custom nodes directory:

      cd ComfyUI/custom_nodes/

    2. Clone this repository:

      git clone https://github.com/smbdsbrain/ComfyUI-PK_load_image_paste.git

    3. Restart ComfyUI

    The node will appear in your node menu under the "image" category as "Paste Image (Load) — PK".

    Usage

    Basic Usage

    1. Add the "Paste Image (Load) — PK" node to your workflow
    2. You can use it in two ways:
      • Manual path entry: Type or paste an image path in the text field
      • Clipboard paste: Click the "Paste from clipboard" button

    Clipboard Paste Feature

    1. Copy an image to your clipboard (from any application, screenshot tool, etc.)
    2. In ComfyUI, click the "Paste from clipboard" button on the node
    3. The image will be automatically:
      • Uploaded to the ComfyUI/input/pasted/ directory
      • Named with timestamp (e.g., paste_1634567890123.png)
      • Loaded into the node automatically

    Path Formats

    The node accepts various path formats:

    • Relative to input directory: image.png or subfolder/image.png
    • Input directory explicit: input/image.png
    • Pasted images: pasted/paste_1634567890123.png (automatically set when using clipboard)
    • Absolute paths: /full/path/to/image.png (advanced usage)

    Output

    The node provides two outputs:

    • IMAGE: The loaded image tensor
    • MASK: Alpha channel mask (if present) or empty mask

    Browser Compatibility

    The clipboard paste feature requires a modern browser with Clipboard API support:

    • ✅ Chrome 76+
    • ✅ Firefox 90+
    • ✅ Safari 13.1+
    • ✅ Edge 79+

    Troubleshooting

    "Clipboard API not available" Error

    • Check if your browser supports the Clipboard API
    • Try refreshing the page

    "No image in clipboard" Error

    • Make sure you've copied an image (not text or other content)
    • Try copying the image again
    • Some applications may not properly copy images to clipboard

    "Upload failed" Error

    • Check ComfyUI server logs for detailed error information
    • Ensure ComfyUI has write permissions to the input directory
    • Verify disk space availability

    Image Not Found

    • Check the file path is correct
    • Ensure the image file exists in the specified location
    • For relative paths, files should be in the ComfyUI/input/ directory

    Technical Details

    • Backend: Python node that extends standard image loading with flexible path handling
    • Frontend: JavaScript extension that adds clipboard functionality via Clipboard API
    • File Storage: Pasted images are stored in ComfyUI/input/pasted/ directory
    • Supported Formats: All formats supported by PIL/Pillow (PNG, JPEG, GIF, BMP, etc.)

    License

    This project is licensed under the WTFPL (Do What The F*ck You Want To Public License).

    Contributing

    Feel free to submit issues, feature requests, or pull requests on GitHub.

    Version

    Current version: v7