ImageAddNoise - ComfyUI Built-in Node Documentation - ComfyUI

The ImageAddNoise node adds random noise to an input image. It uses a specified random seed to generate consistent noise patterns and allows controlling the intensity of the noise effect. The resulting image maintains the same dimensions as the input but with added visual texture.

Inputs

Parameter	Description	Data Type	Required	Range
`image`	The input image to which noise will be added	IMAGE	Yes	-
`seed`	The random seed used for creating the noise (default: 0). This parameter supports “control after generate” functionality.	INT	Yes	0 to 18446744073709551615
`strength`	Controls the intensity of the noise effect (default: 0.5, step: 0.01)	FLOAT	Yes	0.0 to 1.0

Note: Noise values are added to the image and the result is clipped to the 0.0–1.0 range. If the input image has an alpha channel (4 channels), the original alpha channel is preserved unchanged — noise is only applied to the color channels.

Outputs

Output Name	Description	Data Type
`image`	The output image with added noise applied	IMAGE

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