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However, how can you successfully open encrypted PDF file, when you are not sure or don't know PDF file password? With cmd above, you could open password protected PDF file without password from now on. Step 4: Open decrypted-filename.pdf in Preview to verify if it worked. Qpdf -decrypt -password=1234 encryption.pdf decryption.pdf Qpdf -decrypt -password=xxxx encrypted-filename.pdf decrypted-filename.pdfįor example, if your PDF password is 1234, and it is called "encryption", and you want to save it as "decryption" after removing password, just type following command and press Enter.

Step 3: Once QPDF is installed, use it to decrypt the file by typing the following in Terminal.

Sudo port install qpdf or brew install qpdf Step 2: Install QPDF on your system by typing the following in Terminal. Step 1: Install MacPorts if you haven't already installed it. If not, please get PDF password recovery tool to find PDF open password in way 2. The only requirement is you have PDF file open password. You can remove password protection from PDF file with cmd, and then open password protected PDF file.

So if you want to open encrypted PDF files without password, command prompt surely works. decrypt is one basic option provided by QPDF for PDF to remove encryption on PDF file. Way 1: Open Password Protected PDF File with CMD Way 2: Open Encrypted PDF File with Password Recovery Tool.Way 1: Open Password Protected PDF File with CMD.How to Open Password Protected PDF File without PasswordĬannot open password protected PDF file secured with powerful unknown password? Whether you have found any effective methods? If not, two ways introduced in this article are available for PDF users to open encrypted PDF file without password.