Free software that enables quick and solid, batch conversion between many image formats.
Other features include: batch conversion support, Drag-and-Drop of files/folders and after all it is free tool.
The software supports conversion between these image formats: BMP, JPG, JPE, JFI, GIF, PNG, ICO, CUR, TIF, TGA, PCX, WBM, WMF, EMF, JP2, J2K, JPC, J2C, RAS, PNM, PGM, PPM, JBG, MNG, JNG, SKA, NEF, CRW, CR2, DNG, ARW, ERF, 3FR, DCR, RAW, X3F, MEF, RAF, MRW, PEF, SR2, ORF, PGX.