This article shows how to extract metadata with GroupDocs.Parser from documents of various formats: PDF, Emails, Ebooks, Microsoft Office: Word (DOC, DOCX), PowerPoint (PPT, Pptx), Excel (XLS, XLSX), LibreOffice formats and many others....(DOC, DOCX), PowerPoint (PPT, PPTX), Excel (XLS, XLSX), LibreOffice...data from PDF, DOC, DOCX, PPT, PPTX, XLS, XLSX, Emails and more...