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....Word (DOC, DOCX), PowerPoint (PPT, PPTX), Excel (XLS, XLSX), LibreOffice...