Online Convert - Convert files like images, video, documents, audio and more to other formats with this free and fast online converter.
ImBatch - ImBatch is a batch image processor with a nice graphical user interface.
Wide Angle PDF Converter - Convert PDF documents to Word, PowerPoint, Excel, JPG and other formats!
DVDVideoSoft Image Convert and Resize - Free Image Convert and Resize is a compact yet powerful program for batch mode image processing.
CometDocs - Free online conversion service. Possible to determine unknown file format too.
Ralpha Image Resizer - High-speed image batch conversion tool