Input and output file formats supported by GroupDocs.Assembly for Node.js via Java: Word, Excel, PowerPoint, email, OpenDocument, PDF, HTML, Markdown and more....97-2003 Spreadsheet Markup Language Open Document Spreadsheet OOXML...WordprocessingML, RTF, ODT, OTT) Spreadsheet (XLS, XLT, XLSX, XLSM, XLTX...