SaveImageDataSetToFolder - ComfyUI Built-in Node Documentation

This node saves a list of images to a specified folder inside ComfyUI’s output directory. It writes each image to disk as a PNG file using a configurable filename prefix. This node is deprecated and superseded by existing Save Image nodes, where the target folder can be specified in the filename prefix.

Inputs

Parameter	Description	Data Type	Required	Range
`images`	List of images to save.	IMAGE	Yes	N/A
`folder_name`	Name of the folder to save images to (inside output directory). Default: “dataset”.	STRING	No	N/A
`filename_prefix`	Prefix for saved image filenames. Default: “image”. Advanced parameter.	STRING	No	N/A
`mode`	Whether to overwrite existing files or increment filenames to avoid overwriting. Default: “overwrite”.	COMBO	No	”overwrite" "increment”

Notes:

The images input is a list, so multiple images can be saved in a single run.
The folder_name, filename_prefix, and mode parameters are scalar values; if a list is connected, only the first value from that list is used.
The folder_name must resolve to a location inside ComfyUI’s output directory. Values that escape the output directory (for example, paths containing .. or absolute paths) are rejected with an error.
In “overwrite” mode, files are saved as {prefix}_00000.png, {prefix}_00001.png, and so on, replacing any existing files. In “increment” mode, a counter is inserted into the filename so existing files are not overwritten.

Outputs

This node does not have any outputs. It is an output node that performs a save operation to the filesystem.

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Inputs

Outputs