Introduction

If a PDF document is protected with a user password then the software will ask you to enter the user password when unlock PDF file. Advanced PDF Utilities Free is able to add password to you PDF documents so that it can't be cannot be printed, copied, or edited. You are allowed to remove the password added.

Advanced PDF Utilities Free can also apply digital signature to your PDF. A digital signature can be used to identify and authenticate the originator of the information. A digital signature can also be used to verify that information has not been altered after it is signed; this provides message integrity.

Both encryption and digital signature can be combined, hence providing privacy and authentication.

Add or Remove Password

Encrypt a PDF with password or remove the password applied.

Apply Digital Signature

Digitally sign the PDF you create for privacy and authentication.