Reduce PDF Size - Reduce PDF Size a free PDF document compression app.
DVDVideoSoft Image Convert and Resize - Free Image Convert and Resize is a compact yet powerful program for batch mode image processing.
Zamzar - Free conversion online of many type of documents (images, text, video, audio...
Ralpha Image Resizer - High-speed image batch conversion tool
PDF-XChange Editor - The smallest, fastest, most feature-rich PDF editor/viewer available
ImBatch - ImBatch is a batch image processor with a nice graphical user interface.