This is because saving an encrypted PDF file without the encryption password will completely remove password from original PDF document. Either way, the newly PDF document can be opened in any PDF reader without password prompt. You can save it as a new file name or save over the existing file. Attention, you must save the file as a PDF without selecting encryption, just leave it unchecked. This step, select a location to save your newly created PDF document. Once PDF file is decrypted with the correct password, then choose the “File” menu and select “Save As”. This method requires you have the correct password.
Because the PDF file is encrypted and you will be asked to enter the password as usual to access to the file. Then your PDF will be opened in Preview on your Mac OS X. First, you need to right click your password protected PDF file and select 'Open with Preview'.
You will be able to access to your PDF document if in right operation. The process is quite simple and never damage your original data contained in your PDF document.
In fact, Preview app is probably one of the most often used to unlock password from a PDF file on the Mac. Method #1: Unlock PDF Password on Mac using Preview (Know Password) Method #4: Unlock PDF for Editing on Mac Online.Method #2: Unlock PDF File on Mac with PassCue PDF Unlocker for Mac.Method #1: Unlock PDF Password on Mac using Preview (Know Password).
