An EMZ file is a compressed image file that contains some type of graphic or image data. It is specifically referred to as a Windows Compressed Enhanced Metafile file. The file extension .emz is a compressed container of Enhanced Metafile (EMF file) that is compressed using the GZIP compression technique. To open an EMZ file on Windows, you can use various image viewers or editors such as Microsoft Paint, Adobe Illustrator, or XnView.