The following review written by one of the Software Informer contributors applies to version 6.6
This is a lightweight tool that provides you with an easy and fast way of converting your PDF documents into JPEG images files. It is capable of converting many PDF files in a single operation, including encrypted PDF files.
The resulting JPEG files are of a high quality, and it allows you to configure various parameters to get the best possible results.
The program's user interface is very pleasant and easy to use. It provides you with two conversion methods – by selecting your files individually or by creating a "Hot Folder". The first method basically allows you to create a standard conversion list and to assign an output folder to the resulting images. In the "Settings" window, you can also configure many parameters both for the input and the output. Among them, you can set a password to the PDF files, select a page range to convert, a customized output file name pattern, the JPEG type (color or gray-scale), and the JPEG size and a rotation grade. All these parameters can be configured to apply either to all the files in your conversion list, or to each file independently.
The "Hot Folder" method, on the other hand, is an automatic process that produces JPEG images of any PDF file as soon as it is dropped into the selected folder. Here you can select a different folder for the output and decide whether to extend the hot folder properties to its subfolders and whether the source files will be deleted once the job is done or not.
Finally, in the "Preferences" tab, you can set some other general parameters, such as the action to take once the conversion process has finished, or the process priority. To sum up, OpooSoft PDF To JPEG Converter offers you an easy way of converting your PDF documents into customized JPEG image files, regardless of their number and size.