171 Windows Metafile Image Image (Vector) Windows Metafile is an image file format originally designed for Microsoft Windows in 1990. Windows Metafiles may contain both vector graphics and bitmap components. Text 1 Digital Preservation Department / The National Archives 02 Aug 2005 16 Mar 2012 image/wmf MIME x-fmt/119 PUID wmf File extension 609 Windows Metafile Image with Placeable File Header Many applications that create metafiles prepend a 22-byte 'Placeable File Header' to the metafile: https://msdn.microsoft.com/en-us/library/windows/desktop/ms534075(v=vs.85).aspx Magic number 0x9AC6CDD7, 2-byte handle, always 0, skip 16 bytes, File type (1 or 2), header size in words, always 9. 1 Absolute from BOF 0 D7CDC69A0000{16}01000900 1228 Windows Metafile Image without Placeable File Header File type (1 or 2), header size in words, always 9. Version either 01 or 03 1 Absolute from BOF 0 0 0100090000(01|03)