The filter allows you to change image size. A range of resize methods are provided in the Resize dialog box, where you can see the size of the original image and specify the New Image dimensions in pixel or percentage.

Following resize settings are available in this dialog box:

Normal — Use this method if you want to increase the resolution of the original image. The resulting image is larger than the original, and preserves all the original detail, but has undesirable jaggedness. For example, the diagonal lines of the letter "W" would have the shape of a stairway and would be much more jagged if you used this method.

Resample — An image is upsampled to increase the resolution by adding new pixels. An image is downsampled to decrease the resolution by throwing out pixels. Resampling an image usually results in a loss of image quality because pixels must either be interpolated or thrown out.

Bicubic — Minimizes the raggedness normally associated with enlarging an image by estimating how the 'missing' pixels should appear, then filling them in with the appropriate color to smooth out the rough spots. Use the Bicubic Method to enlarge photographic type images.

You can set the Width and the Height of the image in dpi or percent.

Furthermore, by specifying the Horizontal and the Vertical Resolution values (in dpi) you can determine the logical resolution of the image. If you choose to resize by percentage, all images will be upsized/downsized based on the resizing percentage. The percentage would be in relations to the original image size.

Identical Values (in pixel) — Select this check box if you want the resolution to be the same vertically and horizontally.

Maintain Aspect Ratio — Select this check box if you want the proportions of the resulting image to be preserved. When you select this check box, the Identical Values check box become selected and disabled as the vertical and horizontal resolution will be identical in this case.