Download of TwoPageView 2.1.148.1 was on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The TwoPageView installer is commonly called TwoPageView.exe. The most popular version among TwoPageView users is 2.1. This free program is an intellectual property of manoreken. The program lies within Photo & Graphics Tools, more precisely Viewers & Editors.
From the developer:
TwoPageView was originally written to view the PDF image files created by the image scanner (PFU ScanSnap S510) on the sunday afternoon of July 30, 2006 for fun. Now it supports also JPEG, GIF, TIFF, BMP and PNG image format. Animation GIFs are not supported yet.
It extracts all images from the specified PDF file or folder and display one at a time or two at a time. Only the PDF files generated by ScanSnap S510 are supported.
You may want to check out more software, such as XDCAM Viewer or EasyPic, which might be similar to TwoPageView.