I had the same requirement. I started out by adding SVG export. The problem with SVG is that the SVG file does not work properly in most programs. It works in Inkscape but general users should not need any extra programs.
I went for using standard print-out instead. Most (all?) modern browsers/OS have a "Save to PDF"-option when printing. If you use some CSS to hide palette/properties-panel/other stuff using a media-query, printout looks reasonable.