Encrypt PDF software is a flexible program. Encrypt PDF software allows you to encrypt (using standard 40-bit or 128-bit supported by Acrobat Reader 5.0 and up) existing PDFs, set permissions, add user and owner password. For example, you can encrypt a PDF without to allow printing it. The button to print the file will be disabled in Acrobat Reader application.
Limitations:
1/2-page trial
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