If you drag a PDF to the Win2PDF Desktop icon, or select a PDF from the open window when launching the Win2PDF Desktop app, the following window will be displayed:

 

 

After selecting "Delete Pages", select the range of pages in the window.  The total number of pages in the document are listed. To delete a single page, enter the same page number in both boxes. If the document only contains one page, the delete pages item is not available.  

 

This feature is only available in licensed copies of Win2PDF.