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在线 解锁 PDF
在线免费移除您所拥有的 PDF 的密码。输入一次当前密码,即可获得无需提示即可打开的解锁副本。
关于此 解锁 PDF 工具
Unlock PDF removes password protection from a document you have the password for, producing a copy that opens without any prompt. This is for legitimate convenience, not for breaking into files: you must enter the correct current password once, and the tool then saves an unencrypted version. Typical situations include a bank statement or payslip that arrives with a password you have to retype every time, archived documents whose passwords are recorded and no longer needed, and files that need to go into a document system that cannot handle encrypted PDFs. It also removes owner-level restrictions (such as printing or copying limits) from files where you legitimately hold the owner password.
如何使用 解锁 PDF
- 打开工具并添加您的文件、文字或数值。
- 检查可用选项,例如页面范围、输出格式、质量、密码或语言。
- 开始处理,并在完成前保持浏览器窗口打开。
- 下载结果,如有需要可继续使用相关工具。
实用提示
- 对于扫描的 PDF,支持 OCR 的工具会尽可能自动运行文字识别。
- 对于大文件,在通过邮件分享或上传到门户网站之前,请使用压缩工具。
- 为获得最佳效果,请上传扩展名正确的干净文件,避免使用损坏的文档。
常见问题
Can this unlock a PDF without knowing the password?
No. You must enter the correct current password. The tool removes the protection from a file you can already open - it does not crack or bypass encryption.
Why would I remove a password from my own file?
To stop retyping it on files you use often (bank statements, payslips), to archive documents in systems that cannot index encrypted PDFs, or to share a file that no longer needs protection.
Does unlocking change the document content?
No. Only the encryption is removed. Pages, text, images and quality are untouched.
Can it remove printing or copying restrictions?
Yes. Owner-password restrictions on printing, copying and editing are removed along with the encryption when you provide the password.
Can I add a new password afterwards?
Yes. Run the unlocked file through Protect PDF to encrypt it with a new password.
解锁 PDF 免费吗?
是的,免费,无需账户,无水印。