C# .NET metadata API To read, write, edit, analyze, search, extract, remove, compare & export metadata of PDF Word Excel PPTX Outlook Audio Video & Images....Project, Visio diagrams, OneNote, images, AutoCAD, Photoshop, audio...PPSM, POT, POTM, POTX, PPTM Visio: VSD, VDX, VSS, VSSX, VSX, VST...