AdjustBrightness - ComfyUI Built-in Node Documentation

Complete documentation for the AdjustBrightness node in ComfyUI. Learn its inputs, outputs, parameters and usage.

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The Adjust Brightness node modifies the brightness of an input image. It works by multiplying each pixel’s value by a specified factor, then ensuring the resulting values 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	Data Type	Required	Range	Description
image	IMAGE	Yes	-	The input image to adjust.
factor	FLOAT	No	0.0 - 2.0	Brightness factor. 1.0 = no change, <1.0 = darker, >1.0 = brighter. (default: 1.0)

Outputs

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