Mở Khóa PDF
Xóa bảo vệ mật khẩu khỏi PDF
Drop your PDF file here
or click to browse
Xử Lý Trên Trình Duyệt
Tệp được xử lý cục bộ trong trình duyệt của bạn
Tự Động Xóa
Tệp tự động bị xóa sau khi xử lý
Không Cần Đăng Ký
Sử dụng tất cả công cụ mà không cần tạo tài khoản
Hoạt Động Mọi Nơi
Mọi thiết bị, mọi trình duyệt, không cần cài đặt
Cách Mở Khóa PDF
Tải Lên PDF
Chọn hoặc kéo PDF được bảo vệ của bạn vào khu vực tải lên.
Nhập Mật Khẩu
Nhập mật khẩu hiện tại để mở khóa tài liệu.
Xóa Bảo Vệ
Nhấp mở khóa để xóa bảo vệ mật khẩu.
Tải Xuống
Tải xuống tệp PDF đã được mở khóa.
Why Unlock PDF Restrictions?
PDF restrictions can prevent legitimate use of documents you own or have permission to use. Unlocking removes these barriers so you can print, copy, or edit as needed.
Common Restriction Issues
- Can't Print: The document opens but printing is disabled.
- Can't Copy Text: Selecting and copying text is blocked.
- Can't Edit: Form filling or annotation is restricted.
- Can't Extract Pages: Splitting or reorganizing is disabled.
What This Tool Does
This tool removes owner-level restrictions (permissions) from PDFs. It cannot bypass user passwords that prevent the PDF from opening. If you can view the PDF but can't perform certain actions, this tool can help.
Câu Hỏi Thường Gặp
What restrictions can this tool remove?
This tool removes printing restrictions, copy/paste restrictions, editing restrictions, and annotation restrictions from PDFs.
Can this tool crack PDF passwords?
No. This tool removes owner permission restrictions but cannot open PDFs that require a user password to view. You must know the open password.
Is unlocking PDFs online safe?
Yes, your files are processed securely in your browser and are never uploaded to external servers. Your documents remain completely private.
Is this PDF unlock tool free?
Yes, our PDF unlock tool is completely free with no registration, watermarks, or hidden fees.
Why can't I print or copy from my PDF?
The PDF creator set owner restrictions to prevent these actions. Our tool can remove these restrictions if you have legitimate access to the document.
What's the difference between user password and owner password?
User password locks the PDF from being opened at all. Owner password restricts actions like printing and copying. We can remove owner restrictions but not user passwords.
Is it legal to unlock a PDF?
Unlocking PDFs you own or have permission to modify is legal. Removing restrictions to circumvent copyright protection or access unauthorized content may violate laws.
My PDF asks for a password to open - can you help?
If the PDF requires a password to open (user password), you must enter that password. Our tool cannot bypass this security. If you've forgotten the password, contact the document creator.
Will unlocking affect the PDF content?
No, unlocking only removes restrictions. All content, formatting, images, and quality remain exactly the same.
Can I unlock a PDF on my phone?
Yes, our tool works on any device with a web browser including iPhones, Android phones, and tablets. No app download required.