From High Motion Software:
ImBatch is a free multithreaded batch image processor with a nice graphical user interface. It will allow you to edit multiple image files at the click of a button by using scripts. The script will be created by combining Tasks. ImBatch can batch resize and convert images in minutes instead of hours or days if you do it manually. It handles all popular image formats: BMP, DIB, RLE, TIF, TIFF, FAX, G3N, G3F, XIF, GIF, JPG, JPEG, JPE, JIF, PCX, PNG, TGA, TARGA, VDA, ICB, VST, PIX, PXM, PPM, PGM, PBM, WBMP, JP2, J2K, JPC, J2C, DCX, DAT, PSD, WDP, HDP. What sets ImBatch apart from other image processors is our task building environment. By combining different image editing tasks, ImBatch lets you design your own unique image editing projects. Ranging from simple to complex, there is virtually no limit to the variety of "builds" that you can create and process in batch with ImBatch's help. Since ImBatch lets you save builds, the more you use it the faster it becomes. Equipped with the ability to monitor specified folders, ImBatch can automatically access those builds and apply edits saving you time and money.