Updated 01/24/2018 from
If you email sensitive information, including PDF files, be sure to password protect or encrypt that information. The following section provides the steps to create a password protected PDF file without purchasing Adobe Acrobat.
Download and install PrimoPDFa free PDF creator.
Open the document or image you want to create as a password-protected PDF.
Print the file. In the Print Assistant, change the name of your printer from “PrimoPDF” to something else and click “OK” to start the PDF creation process.
In PrimoPDF, select the file quality as shown in the image below, we recommend either “Print” or “Prepress” and then click the button Edit button for PDF security.
In the Password Security window Check the box for “Password required to open document” and enter the password you want to use and click OK.
Finally click on the button Generate PDF to create the password protected PDF.