解锁 PDF
移除 PDF 编辑和打印限制
File
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Pages
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File size
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上传一个 PDF 文件
Settings
Security Notice
此工具可移除 PDF 编辑和打印限制。无法解密需要密码才能打开的受密码保护的 PDF。
Tips
This tool removes editing and printing restrictions only.
It cannot crack password-protected PDFs.
Original file is never modified.
Enter a password if the PDF is encrypted.
使用方法
上传您的文件
拖放文件或点击浏览。您的文件留在浏览器中。
调整设置
配置选项以获得您所需的精确结果。
下载结果
即时处理并下载您的文件——无需等待，无需上传至服务器。
为什么使用此工具
100% 免费
没有隐藏费用，没有付费等级——所有功能完全免费。
无需安装
完全在浏览器中运行。无需下载或安装任何软件。
隐私且安全
您的数据永远不会离开您的设备。不会上传至任何服务器。
支持移动设备
完全响应式设计——在手机、平板或桌面电脑上均可使用。
您的文件保持私密
此工具完全在您的浏览器中处理文件。不会上传至任何服务器——您的数据永远不会离开您的设备。
- 无服务器上传——100% 客户端处理
- 不存储数据——关闭标签页时文件即被丢弃
- 无需账号——无需注册即可立即使用
How to Unlock a PDF: Remove Password Protection from PDF Files
Key Points
- You must know the current password to unlock a PDF—this tool doesn't bypass encryption
- Removes copy, print, and edit restrictions so you can freely use your own documents
- Useful for PDFs you own but forgot to save without a password
PDF password protection restricts access, copying, printing, or editing. While security is important, there are legitimate reasons to remove it—you may have forgotten the password on your own document, need to print a restricted file, or want to remove unnecessary restrictions from files you have permission to modify.
100%
Local processing · Password never transmitted
Common Use Cases
Print Restricted Documents
Some PDFs allow viewing but block printing. If you have the password and permission to print, unlock the file to enable printing.
Copy Text for Research
Academic papers and reports sometimes restrict text copying. Unlock your own or authorized documents to quote text in your research.
Edit Your Own Protected Documents
If you previously locked a document and need to make edits but only have the read password, unlock it to regain editing access.
Consolidate Protected Files
When merging multiple PDFs, protected files can cause errors. Unlock them first to ensure smooth merging.
Unlock Tips
This tool requires you to enter the correct password—it cannot crack or bypass encryption.
After unlocking, save a copy of the unprotected version alongside the original for future convenience.
Only unlock documents you own or have explicit permission to modify—respect copyright and access controls.
Consider whether the document still needs some level of protection after unlocking.
This tool removes password restrictions from PDFs you have authorized access to. All processing happens in your browser—your password and documents are never transmitted. Do not use this tool on documents you are not authorized to access.