Open .vsd, .vdx and .vss files in draw.io

While .vsd, .vdx and .vss import is not supported in draw.io, you can convert to modern .vsdx formats first, and then to draw.io.

Convert to a .vsdx diagram: Open the diagram file in your normal Microsoft editor, version 2013 or later, and save it as a .vsdx file. Create a new draw.io diagram, then drag and drop the .vsdx file into the diagram editor.