Encrypt PDF

PDF Encrypt is a software program that boasts flexibility and power when it comes to encrypting PDFs. It allows you to encrypt existing PDFs using standard 40-bit, 128-bit, or AES encryption, set permissions, and add user and owner passwords. This means you can encrypt a PDF while preventing a user from printing it. The print button will be disabled within the Acrobat Reader app. You can also encrypt a PDF so that the user can only read it with the correct password.

There are two passwords that you can apply to a PDF: the owner password and the user password. The owner password grants you full access to a PDF, even if a user password is set. The user password, on the other hand, restricts access based on the PDF's password protection level. If printing is disabled, the user cannot print it, and so on.

PDF Encrypt offers numerous features, including support for Adobe Standard 40-bit Encryption and Adobe Advanced 128-bit Encryption, as well as AES encryption. It can password-protect the opening of a document, and supports both user passwords and owner passwords. It can prevent printing of the document, prevent copying of text or graphics, and prevent changes to the document. You can add printing, copying, and changing permissions to an encrypted PDF file.

PDF Encrypt is easy to use, and doesn't require Adobe Acrobat software to run. It operates quickly, and supports PDF1.6 protocol (Acrobat 8.x). You can set the document title, subject, author, keywords, and creator to the encrypted PDF file or files. It also includes a command line operation, which works for manual use or for inclusion in scripts. With the windows version, you can perform batch operations on many files.