Item 

Description 

Z  

The zoom (magnification) factor for the image. You can enter a numeric value in this field, or use the Preview zoom slider on the preview pane. A value of 1.0 creates a full size image, while (for example) a value of 0.5 scales the image to half its size. A value of 1.5 scales the image to 1.5 times its size.  

W  

The width of the image. The image will be scaled to the new size, and the zoom factor field will be updated to reflect the new scaling value.  

H  

The height of the image. The image will be scaled to the new size, and the zoom factor field will be updated to reflect the new scaling value.  

Preview  

Click to show or hide a preview of the image. The preview shows how the image will look, given the current values of Z, W, and H.  

Preview zoom  

Use the slider control to scale the image to a smaller size. When the slider is at the leftmost position, a full size image (1:1) will be created. When at the rightmost position, the image size will be decreased by 16 times (1:16).  

Auto preview zoom  

Click to have the image Preview pane update in real-time, as you slide the Preview zoom control.  

Save  

Click to open a Windows Save-as dialog that will let you choose the graphical file format for the image file.