Opening Visio format files without Microsoft Visio on macOS is possible now. Now We also have developed a simple application that opens Microsoft Visio files on Mac OS and exports to other format file. The most obvious decision is to choose something well-known app like VSD Viewer for Mac. However, please don’t rush to install, ‘cause it’s too easy to grab a misfit. If you start googling for free visio viewer for Mac, you’ll definitely find lots of varieties. You’ve received an Unknown Graphic File from your customer in vsd, vsdx, vss and vssx format or your prof has sent you an extremely useful graphic for your project, but you don’t have any CDRViewer 3 on your Mac. Right click on the file > Open with > CDRViewer 3.Double click on it to open and view the document.Here We show you how to open and convert Visio documents with CDRViewer 3 without Microsoft Visio installed on your machine. There are multiple ways of opening Microsoft Visio drawings and stencils on macOS that will easily convert any Visio to other document format.