A pdf user password is the password used to restrict the opening of a pdf. In Adobe Acrobat, the PDF user password is called the document open password. You can say a user password is an open password. It only restricts the opening of a pdf file. The way to encrypt pdf file with user password using Advanced PDF Tools Command Line.is easy and quick. Below is detailed operation on how to encrypt pdf file with user password by
Step 1 click the following link to download Advanced PDF Tools
please unpack it when download is finished.
Step 2 launch the MS-DOS command prompt window. Because theis bound to be operated under the MS-DOS environment. The procedure is easy, and the following pictures will guide you.
1) click “start” and then go to “Run”
2) input cmd into the following
3) press “ok”, you will find MS-DOS command prompt window popping up
Step 3 input command line encrypt pdf file with user password
it goes below
pdftools.exe -i C:\*.pdf -o D:\*.pdf -S userpwd=xux -S keylen=2
- the option -i is to specify a pdf filename or a directory for input,
- the option -o is to specify the pdf file name for output,
- -S userpwd=xux to encrypt a user password as xux
- -S keylen=2 refers to 128 bit AES encryption (Acrobat 7 or higher)
when the input is done, press “enter” key, you will see
Step 4 open the file to check if opening the file an open password is needed
If you have any questions on setting pdf passwords, please come into live support for help.