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In this tutorial, the creator demonstrates how to encrypt PDF files using VBA. To start, you need to download the encrypt PDF.exe file, a command line tool created with Python. The Excel spreadsheet provided lists file paths and passwords for three PDF files. Before proceeding, back up your files. Open the VBA window by going to the developer tab and clicking on Visual Basic. Create a new module and declare variables for file name, row number, and last row. Reference the worksheet as "ws" and name the macro "encrypt_PDFs."
