Free PDF Protector 4dots

With Free PDF Protector 4dots you can batch protect many PDF documents with passwords.It is absolutely free, very easy to use and also multilingual.You can set both a user password (used for opening the PDF documents) and an owner password (used for settings various permissions such as content copying, commenting,printing, form field fill-in).Whole folders with PDF documents and their subfolders can be selected to be protected.Drag and drop.