MenuViewer

This shell extensions will show you a thumbnail of an image file, as well as its dimensions, when you right click on a filename inside Explorer.
Extension uses FreeImage, and currently supports: BMP,DDS,Dr.

Halo,GIF,HDR,ICO,IFF,JBIG,JNG,JPEG/JIF,KOALA,LBM,Kodak PhotoCD,MNG,PCX,PBM,PGM,PNG,PPM,PhotoShop,Raw Fax G3,SGI,Sun RAS,TARGA,TIFF,WBMP,XBM,XPM