Choose File > Protect Using Password. Alternatively, you can choose Tools > Protect > Protect Using Password. Select if you want to set the password for Viewing or Editing the PDF. Type and retype your password. One-click option to protect a PDF with a password Choose File > Protect Using Password. Alternatively, you can choose Tools > Protect > Protect Using Password. Put a password on PDF using user-friendly tools. Create, edit, sign and share documents with pdfFiller, a cloud-based platform that millions of users trust. Open File Explorer and right-click your password-protected PDF. Click Open with and choose Google Chrome. · Press Ctrl + P on your keyboard to open the Print ... Step 2. Protect a PDF from Editing. After opening the PDF file, click on the "Protect" tab and select "Set Password" from the top menu. On the next dialogue, ... Set a password for opening, printing, or changing a PDF · In the Preview app on your Mac, open a PDF. · Choose File > Export. · Click the Permissions button, then ... Protect your PDF files online by adding a password that will prevent people from being able to copy or print your PDF document. Secure PDF files for free. Set a password for opening, printing, or changing a PDF · In the Preview app on your Mac, open a PDF. · Choose File > Export. · Click the Permissions button, then ... Adding a permission password ... Enable the Permissions option in the Password Security window. Enter the password in the first box and re-enter it in the second ... To secure your PDF documents from unauthorized access like copying or printing, you should password protect your file! Protect PDF files by adding a password ...