If %heads.jpg is big, in the case of button it won't resize:
view [
image 140x140 %heads.jpg
button 140x140 %heads.jpg
]
Is there an option to fit image size within a button ?
There is one, though currently only supported on Windows:
view [button 140x140 %head.png with [image: reduce [image size]]
So this changes the /image
facet of the button face, to refer to a block containing the image value and a new target size for the image.