ImBatch is a free image batch processor for Windows.
Main features:
Task Structure.
converting and resizing.
supports Unicode symbols
Supported 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.