解鎖PDF
移除你自己PDF上的密碼。
將檔案拖到此處
或
支援格式: PDF
移除擁有者限制在瀏覽器中完成；需要密碼才能開啟的檔案會改用你伺服器上的 qpdf（如果已安裝）。
免費 · 無需註冊 · 大多數工具檔案不離開您的裝置
此工具完全在您的瀏覽器中執行——檔案不會被上傳。
使用方法
1
上傳
2
設定
3
下載
常見問題
Is 解鎖PDF free?
Yes. 解鎖PDF is completely free with no sign-up, no watermark and no daily limit. There is no paid tier — every tool on iAdorePDF is free to use as often as you like.
Is 解鎖PDF safe and private?
Yes. 解鎖PDF runs entirely inside your browser, so your file is never uploaded to any server. Nothing leaves your device, which makes it safe for confidential documents.
Do I need to install any software?
No. 解鎖PDF works in any modern browser — Chrome, Safari, Firefox or Edge. There is nothing to download and no account to create.
Does 解鎖PDF work on a phone?
Yes. 解鎖PDF is built mobile-first and works on iPhone and Android exactly as it does on a computer, straight from the browser.
Which kind of PDF protection can be removed?
This removes owner restrictions that block printing, copying or editing on files you are allowed to use. It cannot break a password you do not know, and you should only unlock documents you own or have permission to modify.
How do I use 解鎖PDF?
Open the page, drop your file into the upload box (or tap Select file), choose your options, then press the start button. Your result downloads straight to your device.
Is there a file size limit?
There is no server limit because the work happens on your own device. The practical ceiling is your device memory; files up to about 100 MB are comfortable on most phones and much larger on a computer.