Which Document File Types Can I Upload for Signing?

Secured Signing service allows you to upload, add documents and sign in the following formats: Docx, Doc, ODT, ODS, Xls, Xlsx, RTF, and PDF. After signing, the service will produce the signed document in a PDF format. 

In order to view it on your PC, you’ll need to have the latest PDF reader installed on your desktop.

Do you need anything else?