AdjustBrightness - ComfyUI Built-in Node Documentation

The Adjust Brightness node modifies the brightness of an input image. It works by multiplying each pixel’s value by a specified factor, then clamping the resulting values to stay within a valid range. A factor of 1.0 leaves the image unchanged, values below 1.0 make it darker, and values above 1.0 make it brighter.

Inputs

Parameter	Description	Data Type	Required	Range
`image`	The input image to adjust.	IMAGE	Yes	-
`factor`	Brightness factor. 1.0 = no change, <1.0 = darker, >1.0 = brighter. (default: 1.0)	FLOAT	No	0.0 - 2.0

Outputs

Output Name	Description	Data Type
`image`	The output image with adjusted brightness.	IMAGE

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Inputs

Outputs