如何解锁加密的PDF文件

方法 1

方法 1 的 2:使用Soda PDF来删除用户密码

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1
在计算机的Web浏览器中访问 https://www.sodapdf.com/unlock-pdf/ 。这是Soda PDF的网站,它可以用来解锁用户锁定的PDF文件。
如果你不知道密码,那就无法解锁PDF文件。WH.performance.mark(‘step1_rendered’);

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2
点击选择文件。它是页面中央的粉红色按钮。点击过后会提示打开文件资源管理器(Windows)或访达(Mac)窗口。

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3
选择PDF文件。在打开的窗口中,前往PDF文件的存储位置,然后点击选中它。

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4
点击窗口右下角的打开。这样会把所选的PDF上传到Soda PDF。

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5
输入用户密码。在出现的文本框中,输入PDF的解锁密码。

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6
点击密码文本框下方的解锁粉色按钮。Soda PDF就会从PDF删除加密功能。

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7
点击下载文件或预览文件。要下载PDF文件的非安全版本,点击下载文件粉色按钮。要在Web浏览器中预览文件,点击预览文件。

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方法 2

方法 2 的 2:使用Adobe Acrobat来删除用户密码

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1
打开Adobe Acrobat Pro。这是Adobe Acrobat的付费版本;如果你只安装了Adobe Acrobat Reader,那就无法用这种方法来解锁PDF。

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2
点击文件。这个选项位于窗口(或Mac屏幕)的左上角。点击它就会出现一个下拉菜单。
另外,如果你的PDF阅读器带有“最近查看”标签,你可以查看所需的PDF是否显示在那里。

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3
点击打开。如果你选择在“最近查看”部分中查找PDF,那就可以跳过这一步。

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4
双击你要打开的PDF。这样就会在Adobe Acrobat中打开该PDF。
你可能要先选择一个新的目录(如“桌面”或“文档”),以便找到有关的PDF。
或者,你也可以通过双击PDF文件来把它打开。如果这样并不能在Acrobat Pro中打开文件,那就右键点击文件,然后选择打开方式… 。接下来,点击Adobe Acrobat Pro。

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5
输入用户密码并点击确定。这样才能查看和编辑文件。
如果你不知道用户密码,那就无法解锁PDF。

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6
点击挂锁图标。它位于屏幕左侧的“主页”标签下方。

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7
点击“安全设置”标题下方的权限详细信息链接。

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8
点击安全方法框。它将显示类似“密码安全”的字样。

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9
选择无安全措施。这是出现的下拉菜单中的一个选项。

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10
再次输入密码(如果提示)。输入PDF的密码,然后点击两次确定。只要密码正确无误,你的PDF就不会再出现密码锁。

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11
保存PDF。要保存PDF,点击屏幕顶部类似软盘的图标。或者,你也可以点击文件,然后点击保存或另存为。

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