protectingpdf

2024年3月11日 — 在Acrobat 中開啟PDF，然後執行以下任一操作：. 前往「所有工具 > 保護PDF」，然後從左側窗格的「保護PDF」工具組中選取「使用密碼保護」。 · 若您收到提示 ...

Password protect your PDF to prevent unwanted access. Keep your files safe and sensitive info secure with a free online PDF lock with trusted encryption.

如何使用密碼保護PDF · 按一下上方的「選取檔案」按鈕，或將PDF 拖放至放置區。 · 輸入密碼，然後再次輸入以確認密碼。 · 按一下「設定密碼」。 · 下載受密碼保護的PDF ...

How to Password Protect Digitally Signed PDF Documents. 1. Open the PDF and choose File > Print > Adobe PDF > Print. 2. Type the file name, and click Save.

Lock PDF using Windows, Mac, iOS, or Android. FreePDFConvert is online software, so all main platforms are supported. Locking PDF has never been easier and more ...

Encrypt and protect PDF with a password to safeguard sensitive information. Secure your PDF files online, with ease and without registration.

Password protect PDF files with this free and secure password tool. Encrypt a PDF with a password to ensure that sensitive content is kept private.

設置一個密碼來保護PDF文檔中的敏感資訊。輕鬆地線上保護你的PDF文檔，且無需註冊。

2023年12月18日 — At the website, select Protect PDF and then browse to or drag and drop the file you want to protect. Create a password and click Protect PDF ...

Protect your PDF files online by adding a password that will prevent people from being able to copy or print your PDF document. Secure PDF files for free.