For the template (input) we support RTF, XML (WordML), DOCX, and XLSX.
For the report (output) we support PDF, RTF, XML (WordML), DOCX, HTML, TXT, XLS, XML (SpreadsheetML), and XLSX.
You can go from any template format to any output format.
If you have Office 2000, XP (2002), or 2003 and want to read/write the new DOCX & XLSX file format, please download and install the Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats