SecuritySetter
Apply, update and remove PDF encryption, passwords and permissions inside Acrobat — single file or batch.
Batch Security Application
SecuritySetter applies consistent encryption, passwords, and permission flags across entire folders of PDFs — ensuring every document meets your security policy.
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Try it free in your browser first
These free online tools do the single-file version of what SecuritySetter automates in bulk:
Built on the Adobe PDF Library — the same engine as Adobe Acrobat.