When you got some PDF files, you may find these files can not be printed, copied or modified, or even be open. It mainly because these PDF files are encrypted by open password and owner password. Here I will show you how do I unlock these encrypted PDF files on Windows 8.
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PDF Password Remover
> Get rid of restriction from protected PDF files for copying, editing and printing freely
> Remove open password from encrypted PDF files with right authorized password
> A 500-page secured PDF file can be decrypted within one minute