drawing/x-dwf                  dwf              # AutoCAD
image/gif                      gif              # GIF image file
image/ief                      ief              # Image Exchange
image/jpeg                     jpeg jpg jpe     # JPG image file
image/png                      png              # Portable Network Graphics
image/tiff                     tiff tif         # TIFF image file
image/x-cmu-raster             ras              #