Protect, Export, and Share How to password-protect a PDF PDF Extra lets you encrypt your PDF files on file level, allowing no one to view the file, unless they have the password, and/or action level, restricting certain actions, unless they have the password. Open a PDF. In the upper rightmost corner, tap the Contextual menu, then choose Protect. How to share a PDF When you share a file, you can Provide a link for people to download. Note that this file sharing option is only available for files you keep in MobiDrive. Be sure to save your file to the cloud. Send a copy of your file as an email attachment Open your PDF. In the upper right, Tap the Contextual menu, tap Share. Choose an option. How to convert a PDF to ePub or editable file To Export a PDF to doc, xls, or ePub: Open your PDF. Tap the Contextual Menu, Tap Convert to [...] .