To improve SharePoint Server 2013 search relevance, the document parsing functionality in the content processing component analyzes both the structure and content of documents. Documents parsers extract useful metadata and remove redundant information. For example, parsers extract heading and subheadings from Word documents, and titles, dates, and authors from slides in PowerPoint presentations. For HTML content, redundant generic information such as menus, headers, and footers are removed from document summaries in the search results.