Unlock PDF — What We Don't Offer and Why
To remove the lock from a password-protected PDF, you first decrypt the document and then re-save it without a password. Even if a browser can open the document, reliably re-saving it without a password while keeping the original structure is hard to provide.
There's a workaround of redrawing pages as images and saving, but that loses all text search and copy and lowers quality. Calling that result "unlocking" wouldn't be honest.
Also, ezyPDF implements no feature of any kind to guess or brute-force a password you don't know. That's a matter of policy, not technical difficulty.
현재 이 기능은 제공하지 않습니다
작동하지 않는 기능을 작동하는 것처럼 보이게 하지 않기 위해, 파일 선택 영역을 만들지 않았습니다. 아래에 현재 상태와 필요한 기술을 정리했습니다.
| 현재 지원 상태 | 미지원 (준비 중) |
|---|---|
| 필요한 기술 | qpdf 기반 서버 처리(사용자가 아는 비밀번호를 입력받아 복호화), 비밀번호 비로깅 파이프라인 |
| 구현 난이도 | 중간 |
| 예상 서버 비용 | protect-pdf와 동일한 컨테이너를 공유하면 추가 비용 거의 없음 |
| 외부 API 필요 여부 | 불필요 |
Limits of this tool
- There's no way in the browser to re-save a decrypted document with its original structure intact.
- As a matter of policy, we don't implement any feature to discover passwords.
How to use
- 1
Confirm your authority
First confirm the document is one you own or have legitimate authority over.
- 2
Open with the password and re-save
If you know the password, one option is to open it in a PDF viewer by entering the password and use the print dialog's "Save as PDF" (may be restricted by the document's permission settings).
- 3
Ask the issuer
For a document from an institution, requesting a password-free copy from the issuer is the most reliable route.
Key features
No cracking
Features that discover passwords, like brute force or dictionary attacks, are not implemented.
No quality-losing workaround
The rasterizing method that loses text isn't "unlocking," so we don't offer it.
Password check is possible
The PDF Info tool can determine whether a document has a password set.
When to use it
Tidying passwords on your own document
For your own document whose password you know, re-saving without a password in the original editing program is safest.
Handling a received document
Contact the issuing institution to check the password policy or request a copy.
How are your files handled?
This page accepts neither files nor passwords. No input field exists.
This page has no file picker, so no data is processed. See the Privacy Policy and File Retention Policy for details.