User guide

43 ©Nitro
l Metadata: Set any standard information that must be applied to all PDF files created with Nitro
PDF Creator 9
l Document information fields: Enter standard information in these fields to apply to all PDF
documents you create with the printer driver on this computer
PDF Security
l Require a password to open the document: Protect your PDF document with a password to
prevent unauthorized viewing
l Require a password to change security settings and access specific functions: Protect your PDF
document with a password to disable specific features, such as printing or editing the document
l Printing allowed: Prevent the document from being printed, or allow only low or high resolution
prints to be made if the correct password is entered
l Changes allowed: Prevent any changes from being made to the document, or specify the exact
changes allowed if the correct password is entered
l Enable copying of text, images and other content: Users are able to copy text and graphics from
the PDF document if they enter the correct password
l Enable text access for screen reader devices for the visually impaired: Allows screen-reader
software to access the content of your PDF file to read the document aloud to a visually impaired
user
l Encryption:
o
None: the document has no security encryption
o
40-bit ARC4: Use this if you need compatibility with old versions of Adobe Reader
o
128-bit ARC4: Stronger than 40-bit ARC4 encryption
o
128-bit AES: More advanced encryption than ARC4
o
256-bit AES: Highly recommended, and used by latest versions of Adobe Reader
NOTE: You must set an encryption level to apply user and owner security options. Setting the security
level to None disables other security options, including password protection.
Nitro Pro 9 - User Guide