PDF Security (掃描加密設定)

Security options let you control whether, and to what extent, a PDF file can be accessed, edited, and reproduced when viewed in Adobe Reader.

Set a document password to protect and encrypt a PDF file. Only users who have the password can open and decrypt the PDF file.

Go to the security tab. Now click on the Change Settings button next to Password Security. Acrobat will now ask for your password.

Verify PDF security settings in Adobe Acrobat. These settings typically are set when the file is originally created.

In the Document Properties dialog box, select the Security tab. Select the dropdown next to Security Method, and then select Password Security.

Create a password policy · In Acrobat Home, choose See all tools > Protect a PDF > Manage security policies. · Select New. · Select Use ...

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

Within the 'Document Properties' dialog box, select the Security tab and choose the Add Security button. Select the security options you want to enable using ...

Here's how to change PDF security settings: 1. Online PDF Security Removing Tools 2. Adobe Acrobat Tool to Adjust PDF Security 3. SysTools PDF Security ...

Select PDF Security... to change the PDF security. If the PDF is already encrypted, you will be prompted to enter the master password.