PDF Thumbnail Generator

PDF Thumbnail Generator is a lightweight and portable app with a pretty self-explanatory name - it allows you to generate thumbnails from PDF files. It can be easily handled, even by inexperienced users.
Since installation is not required, you can store PDF Thumbnail Generator on a USB flash drive or any other removable device, save it to any computer and directly run its executable file.
More importantly, no changes are made to the Windows registry and no leftover files can be found on the hard drive after program removal.
The interface of the app is standard and easy to work with. You can import a PDF document by using only the file browser, since the 'drag and drop' functionality is not included. Unfortunately, you cannot process multiple items at the same time.
So, you can select a thumbnail and apply it to a particular page number, establish the output directory and filename, and proceed with the procedure. Additionally, you can make the tool open the generated PDF file when the task is done, as well as to show thumbnails when the PDF is opened.
The straightforward program runs on a moderate amount of system resources, has a good response time and quickly finishes a task without causing the operating system to freeze, crash or pop up error dialogs. First-time users can easily find their way around this app's features. Unfortunately, PDF Thumbnail Generator has not been updated for a while.