移除 PDF 的密碼
輸入目前的密碼以移除密碼保護，解鎖檔案。
運作方式
1. 上傳受保護的 PDF。2. 輸入目前的密碼。3. 下載——密碼保護已被移除。
我需要知道目前的密碼嗎？
是的——這個工具是移除您原本就能開啟的檔案上的保護，並不會破解或繞過您不知道的密碼。
我的密碼會被傳送到任何地方嗎？
不會——一切都完全在您的瀏覽器中進行。您的檔案與密碼絕不會離開您的裝置。
如果我輸入錯誤的密碼怎麼辦？
系統會顯示錯誤訊息，且不會有任何變更——請再次確認密碼後重試。
Does this work on a mobile browser?
Yes — it's a regular web page, not an app you install, so it works the same way in a mobile browser as on desktop. Tap to browse for the file using your phone's file picker (or the app you're sharing the PDF from), type the password, and download the unlocked file — everything still happens on your device, nothing is uploaded.
I forgot my password — can you crack or recover it for me?
No. This tool removes protection when you already know the password — it doesn't guess, crack, or brute-force anything. Modern PDF encryption is built to make that impractically slow, so there's no shortcut here. If you've genuinely lost the password, try the person or system that sent you the file, or your own password manager, rather than a tool promising to recover it.