Insert PDF for Visio.Modify PDF diagrams in Microsoft Visio with Insert PDF. Just open the PDF file in Visio and then ungroup it. Instantly, all shapes, fonts, text, and attributes can be selected and changed. Additional options including scale and rotation can be set when opening your file. Using "Open PDF" on the Visio menu, you'll be modifying your drawing in seconds. It saves time and best of all, no more manual redrawing.