Do you crack PDF passwords?

No. You must type the correct open (user) password. There is no wordlist, GPU attack, or “forgot password” recovery. If you do not know the password, this page cannot help.

Is the file uploaded?

No. Decrypt-and-save runs in this tab with a client-side PDF library.

User password vs owner (permissions) password?

This tool targets the **open** password that stops you from viewing the file. Owner-only restriction files (print/copy flags without an open password) may already open; use a PDF editor for permission flags if the document is not encrypted for opening.

The Sample file uses the password `sample` so you can try the flow without a real confidential PDF.

Utill.net

PDF 암호 해제

브라우저에서 제거

알고 있는 열기 암호 또는 권한 제한을 제거합니다. 암호를 모르는 파일은 해제하지 않습니다.

해제는 브라우저에서만 실행됩니다. 암호를 알아야 하며, 모르는 암호는 풀지 않고 업로드하지 않습니다.

PDF를 드래그 앤 드롭하거나 아래에서 선택

파일 찾기

PDF 암호

이미 알고 있는 열기(사용자) 암호입니다. 이 도구는 암호를 추측하거나 크랙하지 않습니다.

원본—
결과—

이 도구는 무엇인가요?

An honest PDF unlocker: it decrypts a file only when you supply the correct open password, then saves a copy without encryption. Everything stays in the browser.

It is not a cracking service, not Adobe Acrobat, and not a way to bypass someone else’s documents.

자주 쓰는 경우

You passworded a scan last year and still remember the phrase, but a website rejects encrypted uploads
A colleague sent a locked PDF and also sent the password in another channel
You want an unencrypted copy on disk after opening the file locally

사용 방법

Drop the encrypted PDF.
Enter the password you already know (Sample uses sample).
Download PDF. If the password is wrong, you get an error — not a guessed file.

예시

Input	Notes
Sample locked PDF, password `sample`	Demonstrates success; output opens without a prompt.
Correct user password on a real file	Unencrypted copy; keep it as carefully as the original secret.
Wrong password	Error; no partial dump.
Unencrypted PDF	Message that the file is not password-protected.

실무에서 흔한 실수

Not a cracker: missing passwords stay missing. There is no “try common passwords” mode on purpose.
Some AES/revision combinations may fail in the library even with the right password; that is a decoder limit.
Unique gotcha: saving an unlocked copy does not revoke the original encrypted file. Anyone with the old file and password can still open it.

참고자료

최종 검토: 2026-08-30

자주 묻는 질문

Do you crack PDF passwords?: No. You must type the correct open (user) password. There is no wordlist, GPU attack, or “forgot password” recovery. If you do not know the password, this page cannot help.
Is the file uploaded?: No. Decrypt-and-save runs in this tab with a client-side PDF library.
User password vs owner (permissions) password?: This tool targets the **open** password that stops you from viewing the file. Owner-only restriction files (print/copy flags without an open password) may already open; use a PDF editor for permission flags if the document is not encrypted for opening.
Sample password?: The Sample file uses the password `sample` so you can try the flow without a real confidential PDF.