Change View and then select 
Thumbnails.A thumbnail is a miniature graphic of an image or a document. There are two kinds of thumbnails: Item and Page thumbnails.
Item thumbnails allow you to visually organize both your image and text files (e.g. JPEG, TIFF, PDF, HTML, Word or Excel files) on the PaperPort desktop. Item thumbnails are often referred to as desktop thumbnails.
Each item is represented by one thumbnail. In multi-page image items, you can move through the thumbnails for each page. You can quickly reposition and rotate items, and easily combine individual items into multi-page items. You can combine all flavors of PDF and image files into PDF file(s).
Note
Text type files (e.g. Microsoft Word, Excel) can only be combined into a PDF in PaperPort Professional if their native applications are installed on your computer and they support printing from their shortcut menus in Windows Explorer.
Before you can work with an item, you must first select its thumbnail on
the PaperPort desktop. A red line appears around an item to indicate that
it is selected.
On the Desktop ribbon, click the arrow next to Change View and then select Thumbnails.
You can use Page thumbnails for image items and PDF files, both on the PaperPort desktop and in the ImageViewer.
With the help of Page thumbnails you can
simultaneously view thumbnails for a group of pages in multi-page image items or PDF files,
navigate conveniently and effectively through these items and
carry out the following page-thumbnail operations in PDF files: reordering, inserting, or deleting pages and appending new pages.
On the Desktop ribbon (in desktop view) choose 
Thumbnail, or on the View
ribbon (in Image View), choose 
Page
Thumbnails in the View Options group.
You can also save a thumbnail image as a separate image file. Right-click a thumbnail image and select Save Thumbnail. Browse for folder and choose one of the following file formats:
JPEG (.jpg)
Portable Network Graphics (.png)
Tagged Image File Format (.tif)
Windows Bitmap (.bmp)
The thumbnail file is renamed to the following file naming convention: "Thumbnail of page (x) of (thumbnail file name)".