Zooming by Using the Scale Bar
This method for zooming allows you to take advantage of zoom presets, or to put the image in ‘fit to window’ mode so that whenever you resize the image window, the image is enlarged or reduced to the size of the window. For example, you can zoom the image to a specific percentage of its actual size, such as 50% or 200%.
Position the cursor over the image and right-click the mouse.
You will see the scale bar.
Move the slider to the right to increase the size of the image, or to the left to decrease its size. You may also click the arrow to see the drop-down list of zoom presets. The scale bar also appears in the status bar at the bottom of the Image-Pro workspace.