AyeConvert

   AyeConvert is a batch image converter, able to read 19 image formats and write 10 image formats ad following:
1) able to read bmp cur dcx emf fmf g3f g3n gif ico jpeg jpg j2k j2c jp2 jpc pcx pgx png pnm pgm ppm ras tiff wbmp wmf;
2) able to save as bmp tiff jpeg png pcx dcx tga ras, etc.
So you can convert your bmp cur dcx emf fmf g3f g3n gif ico jpeg jpg j2k j2c jp2 jpc pcx pgx png pnm pgm ppm ras tiff wbmp wmf into bmp tiff jpeg png pcx dcx tga ras in batches with AyeConvert.
AyeConvert is small in size, no other plug-ins or ocx.