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....(Open Packaging Conventions) VDX Drawing or chart created with...and Mermaid sequence diagram PDF PDF (Portable Document Format)...