Supported formats are:

MS office (doc, docx, rtf, xls, xlsx, ppt, pptx, ppsx)

Open office (odt, ods, odb, txt, htm, html, json, xml)

Images (png, jpe, jpeg, jpg, gif, bmp, ico, tiff, tif, svg, svgz)

Archive (zip, rar, 7z)

Adobe (pdf, psd, ai, eps, ps).