Changing the Size of the Image Window in Photoshop

•   To change the size of the image in photoshop window, place your mouse on  any edge or corner of the window.
•   The cursor will become a double-sided arrow.
•   To enlarge the window, click and drag your mouse away from the center of the image.
•   To reduce the size of the window, click and drag your mouse toward the center of the image.
•   Although the size of the window changes, the image will
•   remain the same size.