Com How to protect Adobe PDFs from unauthorized edits or changes — PDF2Go.com Use the Protect PDF tool or save a PDF file via Download. When you need additional protection on your PDF files, select an additional password and check the checkbox in the Protect PDF window. If you use PDF2Go password protection, the file can only be viewed by the person assigned to the folder. If the file is saved via Download in the folder, you can access it from all devices with the ability to see and print the file. How to Lock a PDF From Editing or Copying — Largepdf.com How to protect Adobe PDFs from unauthorized edits or changes — The Lock PDF Feature When you need additional protection on your PDF files, select an additional password and check the checkbox in the Protect PDF window. If you use PDF2Go password protection, the file can only be viewed by the person assigned to the folder. If the file is saved via Download in the folder, you can access it from all devices with the ability to see and print the file. How to lock a PDF from editing or copying — Adobe Acrobat Open and copy or edit a PDF.• Right-click the PDF you want to review.• Click [Create password] or choose ‛Add/Set a Password.• Choose a password of your choosing and click Change Password.• Copy the password you have chosen into the protected PDF file.• When you next save, your password will remain in the PDF, and the password restriction for your PDF should be honored.• You can use this feature to protect your PDF files from unauthorized modifications. How to lock a PDF from editing or copying — Smallpdf.com How to protect Adobe PDFs from unauthorized edits or changes — Smallpdf.com 1. Drag and drop your PDF into a new PDF and add an optional password.• Right-click the PDF and choose protect.• Enter and repeat an open password.• Choose what users of your PDF are allowed to do.