Issue: # of pages in PDF mode more than in WebI mode

Resolution:

Two things that are causing this.

1. The structure of your report width goes over the width of the first page. Change the report to structure mode and you may find that you have part of a table going past the boundary. Change that and the blank pages will disappear. 

2. PDF will show the exact same number of pages as Webi if you view Webi in Page view. (its the button next to the Structure button). Otherwise Webi shows the pages in a default view which is actually about 3 - 4 times the size of a normal A4 page.