image-transform-resize

image-transform-resize is a variable defined in `image-mode.el'.
Its value is

nil

Documentation:
The image resize operation.
Its value should be one of the following:
- nil, meaning no resizing.
- `fit-height', meaning to fit the image to the window height.
- `fit-width', meaning to fit the image to the window width.
- A number, which is a scale factor (the default size is 1).