DocuSign supports a variety of file formats to accommodate different user needs. The most commonly accepted formats include PDF, Word documents (DOC and DOCX), Excel files (XLS and XLSX), PowerPoint presentations (PPT and PPTX), and image files such as JPEG and PNG. Furthermore, DocuSign also allows for the use of TXT and RTF files. It is important to note that while these formats are widely supported, users should ensure that their documents comply with any specific requirements or limitations for electronic signatures, particularly if the files contain specific elements that may affect their legality. For a complete and updated list of accepted formats, one may want to check the relevant section on the DocuSign website for any more detailed information.