How do you password protect multiple PDF files at once?
Posted on 2009-04-15
I have tried compressing the files into a zip folder and adding a password (with the compression tool built into XP), but after 4 days it was only about 30% finished and it came up with an error "Cannot create output folder" (the disk wasn't full).
I have Acrobat 9, which I can password protect one document at a time, but this would take days to complete.
Are there other ways to password protect large numbers of documents at once? (approximately 30,000 files)