JoinImageWithAlpha - ComfyUI Built-in Node Documentation - ComfyUI

This node is designed for compositing operations, specifically to join an image with its corresponding alpha mask to produce a single output image. It effectively combines visual content with transparency information, enabling the creation of images where certain areas are transparent or semi-transparent.

Inputs

Parameter	Description	Data Type
`image`	The main visual content to be combined with an alpha mask. It represents the image without transparency information.	`IMAGE`
`alpha`	The alpha mask that defines the transparency of the corresponding image. It is used to determine which parts of the image should be transparent or semi-transparent.	`MASK`

Outputs

Parameter	Description	Data Type
`image`	The output is a single image that combines the input image with the alpha mask, incorporating transparency information into the visual content.	`IMAGE`

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