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I have PDF file that consists of various photos, a media music player, and some text I wrote with the PDF maker before "rendering it" to its final version in PDF.

I followed an Adobe tutorial which assisted me in changing permissions (Encrypt » Password security). I verified that every option was as I liked (Changes allowed set to none), but then when I opened the "format saved PDF", the PDF version of the one I was working on, changes could still be made to it.

How do I get around that so when I publish and distribute my PDF file, no changes can be made in it?

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Which software are you using to make/edit these PDFs? –  iglvzx Jan 24 '12 at 6:16
    
@iglvzx Acrobat Pro, obviously? –  slhck Jan 24 '12 at 11:13

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