Introducing VizMac the Visio Viewer for Mac Posted 2/20/2015 at 5:57 UTC in Mac by gnye@amdesign.net | Permalink | Tweet Vandaurico announces VizMac Visio viewer for Mac which allows anyone to view, save and print Visio drawings and diagrams on their OS X Mac computer. VizMac enables users to discover the advantages of using Visio drawings, charts, & illustrations in a Mac environment. Visio files saved as binary (.vsd) files must first be decoded using the VizMac web service before being able to view the drawing or diagram in VizMac. This transaction takes place in the background & is transparent to the end user.