ImageSize (Side)(imageSizeBySide)

ImageSize (Side) returns the pixel length of either the longer or shorter side of an input image. This is useful when you need a single integer dimension for downstream operations such as resizing, conditioning area setup, or arithmetic on image measurements. The node is placed in the EasyUse/Image category.

Inputs

• image (IMAGE, required): An image tensor in ComfyUI's standard format. The node reads the spatial height and width from the tensor to determine the side lengths.
• side (COMBO, required): Which dimension to return:
  • Longest — returns the larger of the image height and width.
  • Shortest — returns the smaller of the image height and width.

Outputs

• INT: The selected side length, in pixels.

Usage Notes

• Use Longest when the dominant/outer dimension is the value you need, such as keeping the larger edge fixed during a resize.
• Use Shortest when the limiting dimension matters, such as fitting an image inside a bounded area.
• If the image is square, both Longest and Shortest return the same value.
• The output is a single integer value, so it can be connected directly to any node that expects an integer input.