The easiest way to send a fax is you can just click the “File Upload” button to fax a file on your computer: you can send a PDF, Microsoft Word (DOC or DOCX or RTF) file, image files (PNG or JPG) or Excel spreadsheet (XLS or XLSX). Other supported file formats include TXT, HTML, TIFF, GIF, and PPT(PowerPoint). Else, if something doesn’t work, convert anany File to PDF via an online Free converter to PDF & you can proceed ahead.