PDF를 보호하기

PDF를 암호로 보호합니다.

<p>PDF를 드롭하세요</p>

100% 비공개어떤 서버에도 업로드되지 않은 파일

로컬에서 처리됨더 빠른 처리, 크기 제한 없음

완전 가이드: PDF를 보호하기

Protecting your PDF documents with password encryption is essential for safeguarding sensitive information. Whether you're sharing confidential business proposals, personal financial documents, medical records, or legal contracts, adding password protection ensures that only authorized individuals can access the content. iLoveDoc's Protect PDF tool applies strong AES-256 encryption to your documents, the same encryption standard used by banks and government agencies. You can set both an open password (required to view the document) and a permissions password (which controls printing, copying, and editing rights). The encryption is applied entirely in your browser — your unprotected document never leaves your device and never passes through any server. This is critically important because the moment before encryption is when your document is most vulnerable. By processing locally, we eliminate the security risk inherent in uploading unprotected sensitive documents to cloud services. The protected PDF can then be safely shared via email, cloud storage, or any other channel, knowing that only recipients with the correct password can open it. Even if the file is intercepted or accidentally shared with the wrong person, the contents remain completely inaccessible without the password.

PDF를 보호하기 사용 방법

1Upload the PDF document you want to protect by clicking "Select PDF file" or using drag-and-drop.
2Enter a strong password that will be required to open the document. Use a mix of letters, numbers, and symbols.
3Optionally set permission restrictions: disable printing, copying text, or editing the document.
4Click "Protect PDF" to apply AES-256 encryption to your document.
5Download the password-protected PDF and share it securely. Remember to send the password through a separate channel.

PDF를 보호하기 사용 사례

Confidential Business Documents

Protect strategic plans, financial forecasts, merger documents, and competitive analyses before sharing with stakeholders or board members.

Legal Documents

Encrypt contracts, non-disclosure agreements, and court filings to ensure only authorized parties can access sensitive legal information.

Personal Records

Secure tax returns, bank statements, medical records, and identity documents before storing them in cloud storage or sharing via email.

Intellectual Property

Protect research papers, patent applications, product designs, and proprietary methodologies from unauthorized access or distribution.

iLoveDoc에서 PDF를 보호하기 을(를) 사용해야 하는 이유

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파일은 브라우저에서 완전히 처리됩니다. 서버에 절대 업로드되지 않으므로 완벽한 기밀성과 데이터 보호가 보장됩니다.

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PDF를 보호하기 은(는) 등록할 필요가 없고 파일 크기 제한 없이 완전히 무료로 사용할 수 있습니다. 필요한 만큼 여러 번 사용하세요.

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로컬 브라우저 기술 덕분에 처리가 즉각적입니다. 대기 시간, 대기열, 서버 지연이 없습니다.

PDF를 보호하기 에 대한 자주 묻는 질문

What level of encryption does the protection use?

We use AES-256 bit encryption, which is the same standard used by banks, government agencies, and military organizations. It is currently considered unbreakable by brute force attacks.

Can I set different passwords for opening and editing?

Yes. You can set an "open password" that's required to view the document, and a separate "permissions password" that controls editing, printing, and copying rights. This lets you share documents that can be viewed but not modified.

Is my document sent to a server for encryption?

Absolutely not. The entire encryption process happens locally in your browser. Your unprotected document never leaves your device, which is the safest approach for handling sensitive files.

What happens if I forget the password?

Since the encryption is strong (AES-256), there is no way to recover a forgotten password. We recommend storing your passwords in a secure password manager. We do not have access to your password or your files.

Can I protect a PDF that already has form fields or signatures?

Yes. Password protection can be applied to any PDF, including those with interactive form fields, digital signatures, and annotations. All existing content is preserved under the encryption layer.