Different password types for PDF fileĭocument open password, also named as a user password, that needs you to type a password to open the PDF file. You can use this software to create the encrypted password to prevent others opening the PDF file or editing PDF file, based on the password type you set. How to set and open password for PDF file in Adobe Acrobat ReaderĪdobe Acrobat Reader is the professional PDF file reader and editor. How to remove password protection from PDF How to set and open password for PDF file in Adobe Acrobat Reader How to set password protect for a PDF file? How to open password protected PDF file? How to remove the password if you are unfortunate to forget the PDF encrypted password? In this page, you will get the detailed solutions for the above problems. For some confidential details in PDF file, password is necessary to set to protect it. PDF file is widely used in Office or business dealing. How to Create/Open/Remove Password Protected PDF File 'I have some PDF files that need to be protected encrypted, should I password protect a PDF in Adobe Acrobat Reader?' 'I receive a PDF file from my partner, but it is password encrypted.