While you can protect individual PDF files with passwords, this can become needlessly complex if you’re sending lots of how to add security password to pdf. With Adobe Acrobat, you can create what is referred to as a Security Envelope. This is a PDF file that can contain a variety of different files as attachments.
All of these attachments will be protected by a single password. Open the Security Envelope tool in Acrobat Pro. The process for this varies a little depending on what version you’re using.
You cannot create security envelopes in the free Acrobat Reader. X and older – Click the “Secure” button in the toolbar and select “Create Security Envelope.
Add files to send in the envelope. Your currently-open PDF file will be added automatically, and you can add any other files you want.
Word documents, Excel spreadsheets, and other types of files. Click the “Add File to Send” button and browse for the files that you want to add. More files will increase the size of the security envelope file.