Visio Diagram Java API can load and save variety of formats including VSDX, VDX, VSD, Vtx, VSSX, VSDM, VSTM, Pdf, XPS, SVG, EMF, JPEG, PNG, BMP, TIFF and HTML....Visio Stencil XML file type VTX XML for Visio (Template File)...Type VST VST Template File PDF PDF (Portable Document Format)...