ComfyUI Node: LogicUtil_Save Image Custom Node

LogicUtil_Save Image Custom Node:

The LogicUtil_SaveImageCustomNode is designed to facilitate the saving of images generated or processed within the ComfyUI environment. This node allows you to save images with a customizable filename prefix and within a specified subfolder directory. It also supports embedding metadata such as prompts and additional PNG information into the saved images. This functionality is particularly useful for AI artists who need to organize and store their generated images systematically, ensuring that each image is saved with relevant metadata for future reference or further processing.

LogicUtil_Save Image Custom Node Input Parameters:

images

This parameter expects a list of images that you want to save. Each image should be in a format compatible with the node's processing capabilities. The images are processed and saved to the specified directory with the given filename prefix.

filename_prefix

This is a string parameter that allows you to specify a prefix for the filenames of the saved images. The default value is "ComfyUI". This prefix helps in organizing and identifying the saved images, especially when saving multiple images in a batch.

subfolder_dir

This string parameter specifies the subfolder within the output directory where the images will be saved. By default, this is an empty string, meaning the images will be saved directly in the output directory. Specifying a subfolder helps in further organizing the saved images.

prompt

This hidden parameter allows you to embed the prompt used to generate the images into the image metadata. This can be useful for tracking the conditions under which the images were created.

extra_pnginfo

This hidden parameter allows you to add additional PNG information into the image metadata. This can include any extra details you want to store with the image, such as settings or parameters used during image generation.

LogicUtil_Save Image Custom Node Output Parameters:

STRING

The output of this node is a string representing the filename of the last saved image, without the ".png" extension. This can be used for further processing or reference within the ComfyUI environment.

LogicUtil_Save Image Custom Node Usage Tips:

• Ensure that the filename_prefix is unique or descriptive enough to avoid overwriting existing files when saving multiple images.
• Utilize the subfolder_dir parameter to keep your output directory organized, especially when working on multiple projects or batches of images.
• Take advantage of the prompt and extra_pnginfo parameters to embed useful metadata into your images, making it easier to track and reproduce your work.

LogicUtil_Save Image Custom Node Common Errors and Solutions:

"Output directory not found"

• Explanation: The specified output directory does not exist.
• Solution: Ensure that the output directory path is correct and that the directory exists. You may need to create the directory manually if it does not exist.

"Failed to save image"

• Explanation: There was an issue during the image saving process, possibly due to file permissions or disk space.
• Solution: Check the file permissions of the output directory and ensure there is enough disk space available. Also, verify that the filename and subfolder parameters are correctly specified.

"Invalid image format"

• Explanation: The provided images are not in a compatible format.
• Solution: Ensure that the images are in a format supported by the node, such as a NumPy array or a PIL Image object. Convert the images to the appropriate format if necessary.