잠긴 PDF는 복사, 인쇄, 편집을 막습니다. 소유자라면 쉽게 해제할 수 있습니다.
문제 개요
몇 달 전 만든 PDF를 재사용하려는데 여전히 암호가 걸려 있습니다.
왜 발생하는가
PDF는 열기 암호와 소유자 암호 두 가지를 지원합니다.
단계별 해결 방법
- 1Confirm you have the right to unlock the file.
- 2Open an unlock tool and upload the PDF.
- 3Enter the password if the file requires one to open.
- 4Click Unlock and wait for processing.
- 5Download the file — it should now allow copy, print and edit.
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추가 팁
- Never share unlocked copies of files that belong to someone else.
- Save the original locked file alongside the unlocked copy for reference.
- If you forgot the password, the tool cannot magically recover it — try a password manager.
- After unlocking, re-secure the file using our Protect PDF tutorial if needed.
자주 묻는 질문
Q.Can any locked PDF be unlocked?
Only if you know the password or the file only uses owner-level restrictions.
Q.Is unlocking legal?
Only for files you own or have permission to modify.
Q.Does unlocking change the content?
No, only the permissions and password metadata change.
Q.Can I unlock offline?
Yes, with a desktop PDF editor that supports it.
결론
PDF 잠금 해제는 자신의 문서 작업에 걸림돌을 제거합니다.
