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In this video tutorial, the creator demonstrates how to use VBA to encrypt PDF files. Before starting, download the "encrypt_pdf.exe" file, a command line tool created with Python. The Excel spreadsheet contains file paths in column A and passwords in column B. Create a backup of PDF files before running the macro. Open the VB window under the developer tab, insert a new module, and declare variables. Define the macro "encrypt_pdf" and reference the worksheet as "ws".
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