How to protect PDF files from being viewed or copied by others?-AmindPDF

Jazmin

2022-08-04 10:40

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我们经常在电脑上存储各种类型的PDF文件，其中一些可以查看但不能编辑或复制，还有一些不打算让其他人查看。那么我们如何保护这些PDF文件呢？今天给大家推荐一个工具，不仅可以给PDF文件加水印，还可以对PDF文件进行加密或解密，保护PDF文件。

推荐软件：AmindPDF Editor

我们可以在网上的教程中看到或下载带有水印的PDF文件。这其实是第一种防止盗用的方法，所以我们也可以通过添加水印来保护PDF文件不被修改或复制。

为PDF文件添加水印以保护PDF文件的步骤：

第一步：在电脑上下载AmindPDF Editor并打开，在首页打开需要加水印的PDF文件；

Step 2: After opening the PDF file, in the editing interface, click the "Add Watermark" button in the submenu bar, and the "Add Watermark" dialog box will pop up;

AmindPDF Editor can add watermarks in two ways, one is text watermark and the other is file watermark.

(1) Add text watermark: Enter the watermark text to be added after the text in the "source" range, such as AmindPDF, and then modify the font, font size and color of the text;

(2) Add text watermark: Click the "Browse" button behind the file, add a file or image watermark, and then modify the number of pages and zoom ratio of the watermark;

Modify the appearance of the watermark:

(1) Rotate the watermark;

(2) Modify the watermark transparency;

(3) The scaling ratio of the watermark relative to the page;

(4) The order of watermark and text: The watermark is placed at the bottom of the text or placed at the bottom of the text.

Modify the position of the watermark: You can adjust the vertical and horizontal positions of the watermark.

Steps to add password-protected PDF files to PDF files:

1. Open the PDF file that needs to be edited in Golden Flash PDF Editor, click the "Protect" button in the main menu bar, and go to the PDF add password and remove password interface;

2. Click the "Add Password" button, and the "Password Protection" dialog box will pop up. In the dialog box, there are three modules:
-Set the document opening password: add the opening password of the file, after adding, you need to enter the password to open the PDF file;

-设置文档权限密码模块：可以设置打印权限和设置修改权限密码。设置后不允许修改密码；
-加密设置模块：设置加密算法。

3. 删除PDF文件密码：打开添加密码的PDF文件后，点击“保护”和“删除密码”直接删除密码。

以上就是AmindPDF保护PDF文件的两种方法。您可以根据自己的需要选择合适的PDF保护方式来保护PDF文件。