Owner flags vs encryption that blocks opening
Publishers often disable print on a manual you are allowed to use. Screenshot-and-print-to-PDF destroys quality. Restriction removal via pdf-lib keeps the original streams. If a user password still blocks opening, restriction tools cannot guess it.
What usually lifts
Print, copy, and edit owner limits on files you can already open, when the PDF security model permits removal.
What never lifts here
Unknown open passwords. We will not brute-force. That is the same honest line as the hub.
After restrictions are gone
Redact or Protect as your policy requires. An editable PDF is more dangerous if it still contains PII you meant to hide.