The Scale filter lessens and enlarges the physical size of the image in relation to the original. Often in order to send by e-mail or place in the Internet, it is convenient to diminish the photo not losing the visible quality of the image. Enlarging the photo is also a broadly required function.
The Scale parameter is a coefficient of scaling in per cent. By default, the value of this parameter is 100%, that means, the image is presented in the original, natural scale. In order to compress or stretch the image, it is necessary to decrease or increase respectively the coefficient of the Scale filter.