Advanced Batch Converter is a nice utility you can use to easily convert graphic files in normal, batch, and command line modes.

More than that, you can alsoedit images directly in Advanced Batch Converter, to produce a variety of effects. Input formats: bmp, jpg, gif, png, tif, jpeg, rle, dib, pcd, ico, wmf, tiff, tga, pcx, scr, emf, jif, jpe, jfif, afi, vst, rgb, win, cel, pic, bw, icb, psd, pdd, cut, pcc, rgba, sgi, rla, rpf, ppm, pbm, pgm, vda, psp, cur, targa, tar, jfi, ani.

Output formats: bmp, jpg, jpeg, gif, png, pcx, tga, pcc, tif, tiff, ico, wmf, emf.

Features:

· 67 supported formats.
· Slideshow with transition effects.
· Capture image (desktop, object, area, window).
· Save for web (jpg, gif, bmp, jpeg2000, tiff).
· Watermark text.
· Multipage gif and tiff import.
· Color and morphing effects.
· Selection tools (rectangle, circle, lasso, magic Wand).
· Color picker tool.
· Hex-RGB color converter.
· EXIF/IPTC data.
· Easy-to-use interface.
· Full command line support.