Guide To Convert .Pptx Extension Files To .Ppt And .Docx To .Doc Online The latest version of Microsoft office 2007 has its own file extension such as .pptx for power point files and .docx for document files. These new version of Microsoft office are no doubt loaded with improved features, but some users find difficulty to open these .pptx and .docx files on their computer, … [Read more...] about Guide To Convert .Pptx Extension Files To .Ppt And .Docx To .Doc Online