Simply click on an image with the middle mouse button and move the mouse left (to zoom out/shrink) or right (to zoom in/enlarge). Release the button when you have the desired image size. (May not work for some images and some web sites.)
Update: the image url and size (in bytes, if can be determined) are now displayed.
Tip: To prevent opening a link associated with the image, move cursor up or down outside of the image.
Note: There’ll NEVER be the right mouse button option! Please don’t ask! Thank you!
IT WON’T WORK ON LAPTOPS W/O MIDDLE MOUSE BUTTON! DUH!