ThumbView enables thumbnails and tool tips in MS-Windows Explorer for file types that are not natively supported. An amazing 19 image types are supported, namely: cut, dcx, dds, mdl, mng, pcd, pcx, pic, pix, png, pnm/pbm/pgm/ppm, psd/pdd, psp, pxr, sgi/rgb, tga/vda/icb/vst, tif/tiff, wal and xpm. The program is not run as a process and will not consume CPU time; it is a shell extension (COM) called by Windows when it wants to display a thumbnail.