Image Input/Output

Load and save images in ComfyUI.

LoadImage

Load image files for workflow.

Inputs

Input	Type	Description
(none)	-	File selection

Parameters

Parameter	Type	Description
image	file	Image file

Outputs

Output	Type	Description
IMAGE	image	Loaded image
MASK	mask	Alpha channel as mask

Supported Formats

Format	Extension	Notes
PNG	.png	Recommended
JPEG	.jpg, .jpeg	Lossy
WebP	.webp	Good compression
BMP	.bmp	Uncompressed

RGBA Images

Load PNG with alpha channel to get mask:

LoadImage (RGBA.png)
    ↓ IMAGE → processing
    ↓ MASK → inpainting mask

SaveImage

Save generated images.

Inputs

Input	Type	Description
images	image	Image to save
mask	mask	Optional mask

Parameters

Parameter	Type	Description
filename_prefix	string	Output filename prefix

Output Location

ComfyUI/output/

ImageScale

Scale image to different resolution.

Inputs

Input	Type	Description
image	image	Image to scale

Parameters

Parameter	Type	Description
method	dropdown	Scale algorithm
width	int	Target width
height	int	Target height

Scale Methods

Method	Quality	Speed
nearest	Low	Fastest
bilinear	Medium	Fast
lanczos	High	Medium
area	High	Slow
bicubic	High	Medium

ImageCrop

Crop image to specific region.

Inputs

Input	Type	Description
image	image	Image to crop

Parameters

Parameter	Type	Description
x	int	Left position
y	int	Top position
width	int	Crop width
height	int	Crop height

ImagePad

Extend image with new content (outpainting).

Inputs

Input	Type	Description
image	image	Base image
mask	mask	Areas to fill

Parameters

Parameter	Type	Description
left	int	Pixels to add left
top	int	Pixels to add top
right	int	Pixels to add right
bottom	int	Pixels to add bottom

ImageBlend

Blend two images together.

Inputs

Input	Type	Description
image1	image	First image
image2	image	Second image
blend	float	Blend strength (0-1)

Next Steps

• CheckpointLoader - Load model
• KSampler - Generate image