Actually, drop shadow service can be defined in many ways, in Photoshop graphic design drop shadow is a creative visual effect consists of drawing which looks as a shadow of an image object, showing an impression of the object behind itself. In a nutshell, drop shadow is a system of adding a grey and black shadow under the main layer of an image. These shadows must be related to the original image. In order to develop the naturalistic, realistic and professional view of an image this is a very essential service.