每个主要的网络浏览器——无论^{(web browser—be)}是Chrome、Firefox、Edge还是 Safari——都具有内置的PDF 查看器^{(PDF viewer)}，可以自动打开您遇到的PDF文档。^(PDF)虽然这是开始阅读它们的一种快速且无缝的方式，但您可能会错过您首选的PDF 阅读器或编辑器^{(PDF reader or editor)}中的高级功能。因此^(Hence)，您可能更喜欢直接下载PDF^(PDFs)。

下面的说明将显示在Chrome、Firefox和Edge中禁用默认内置PDF 查看器^{(PDF viewer)}必须执行的操作。这会迫使您的浏览器将PDF^(PDFs)下载到本地存储。不幸的是，您不能在Safari中执行相同的操作，但存在一个有用的解决方法，可让您在不打开PDF^(PDFs)的情况下下载它们。

禁用Chrome中的内置 PDF 查看器^{(Built-In PDF Viewer)}

在Google Chrome中，您可以选择下载PDF^(PDFs)而不是打开它们。这也会停用浏览器的内置PDF 查看器^{(PDF viewer)}。

1. 打开Chrome菜单（选择窗口右上角的三个点图标）并选择Settings。

2. 选择侧边栏上的隐私和安全^{( Privacy and security )}。

3. 选择站点设置^{(Site Settings)}。

4. 向下滚动并选择其他内容设置^{(Additional content settings)}。

5. 选择PDF 文件^{(PDF documents)}。

6. 选择下载 PDF^{(Download PDFs)}旁边的单选按钮。

这应该禁用Chrome中的^(Chrome)PDF 查看^{(PDF viewer)}器。如果您想稍后重新启用它，请重复上述步骤，但在步骤6中选择⁽⁶⁾在 Chrome 中打开 PDF^{(Open PDFs in Chrome)}。

禁用Firefox中的内置 PDF 查看器^{(Built-in PDF Viewer)}

Mozilla Firefox不仅允许您禁用其内置的PDF 查看器^{(PDF viewer)}，还允许您在下载文档或在计算机的默认PDF 查看器^{(PDF viewer)}中自动打开它们之间进行选择。

1. 打开Firefox菜单（选择屏幕右上角的三叠线图标）并选择Settings。

2. 在常规^(General)选项卡下，向下滚动到文件和应用程序^{(Files and Applications)}>应用程序^{(Applications)}。

3. 选择可移植文档格式 (PDF)^{(Portable Document Format (PDF))}并将操作^(Action)设置为保存文件^{(Save File)}或Use macOS/Windows default application。

您已在Firefox中禁用^(Firefox)PDF 查看^{(PDF viewer)}器，任何PDF文档都将在您的 PC 或 Mac 的默认PDF 查看器^{(PDF viewer)}中下载或启动（取决于您选择的设置）。

如果您想在Firefox中重新启用PDF 查看^{(PDF viewer)}器，请重复上述步骤，但在步骤3中选择⁽³⁾在 Firefox 中打开^{(Open in Firefox)}。

禁用Edge中的内置 PDF 查看器^{(Built-in PDF Viewer)}

与Chrome一样，您可以配置Microsoft Edge以将^{(Microsoft Edge)}PDF^(PDFs)下载到本地存储。只需短暂访问浏览器的设置页面即可。

1. 打开边缘^(Edge)菜单（选择屏幕右上角的三个点图标）并选择设置^(Settings)。

2. 选择侧边栏上的Cookie 和站点权限^{(Cookies and Site Permissions)}。

3.向下滚动^(Scroll)屏幕并选择^{(screen and select)} PDF 文档^{(PDF documents)}。

4. 打开始终下载 PDF^{(Always download PDFs)}旁边的开关。

您已禁用Edge中的默认PDF 查看器^{(PDF viewer)}。如果您想稍后重新启用它，请重复上述步骤，但在步骤4中关闭始终下载 PDF^{(Always download PDFs)}旁边的开关。

绕过^(Bypass)PDF 查看器并^{(PDF Viewer and Force-Download PDFs)}在Safari中强制下载 PDF

与其他浏览器不同，您无法在 Mac 的原生Safari 浏览器上禁用^{(Safari browser)}PDF 查看^{(PDF viewer)}器。但是您可以选择在不打开 PDF的情况下下载它。^(PDF)

为此，只需在选择指向PDF 文件的链接时按住^{(PDF file)}Option键。尝试在这里练习^{(Try practicing it here)}。

但是，如果您的 Mac 运行旧版本的 macOS^{(an old version of macOS)}（例如macOS 10.13 High Sierra或更早版本），在^{(High Sierra)}终端^(Terminal)中运行以下命令将禁用Safari中的内置PDF 查看^{(PDF viewer)}器：

默认写入 com.apple.Safari WebKitOmitPDFSupport -bool YES^{(defaults write com.apple.Safari WebKitOmitPDFSupport -bool YES)}

注意：如果您想稍后重新激活PDF 查看器^{(PDF viewer)}，请重新运行相同的命令，将YES替换为NO。

更改Web 浏览器^{(Your Web Browser)}中的默认下载位置^{(Default Download Location)}

默认情况下，每个Web 浏览器^{(web browser)}都会将PDF^(PDFs)（和其他下载）保存到PC 或 Mac^{(PC or Mac)}上的“下载”文件夹^{(Downloads folder)}中。这是在Chrome、Firefox、Edge和Safari中更改下载位置^{(download location)}的快速操作。有关更多信息，请查看我们在任何浏览器中更改下载位置的指南。^{(download location)}

谷歌浏览器^{(Google Chrome)}

重新访问 Chrome 的设置^(Settings)页面，然后在边栏上选择高级^(Advanced)>下载^(Downloads)。然后，使用位置^(Location)旁边的更改^(Change)按钮指定不同的目录。 

火狐浏览器^{(Mozilla Firefox)}

打开 Firefox 的设置^(Settings)页面并向下滚动到文件和应用程序^{(Files and Applications )}部分。在“下载^(Downloads)”下，选择“选择”^(Choose)按钮以选择不同的下载目录^{(download directory)}。

微软边缘^{(Microsoft Edge)}

在 Edge 中重新打开“设置”页面，然后选择侧边栏上的“^(Settings)下载^(Downloads)”。然后，选择位置^(Location)旁边的更改^{(Change )}以切换下载目录。

苹果浏览器^{(Apple Safari)}

在菜单栏上选择Safari >首选项。^{(Preferences)}然后，在常规选项卡下，打开^{( General)}文件下载位置^{(File download location)}旁边的下拉菜单，然后选择其他^(Other)更改下载目录。

更改Windows 和 macOS^{(Windows and macOS)}中的默认 PDF 查看器^{(Default PDF Viewer)}

将PDF^(PDF)下载到您的 PC 后，双击它将在您计算机上的默认 PDF 查看器^{(default  PDF viewer on your computer)}中打开文件（Windows 中的 Microsoft Edge 和macOS 中的预览^{(Preview in macOS)}）。

如果您希望始终让其他程序打开您的PDF^(PDFs)，则必须更改默认PDF 查看器^{(PDF viewer)}。

视窗^(Windows)

1. 右键单击​​任何PDF 文件并选择^{(PDF file and select)}打开方式^{( Open with)}>选择另一个应用程序^{(Choose another app)}。 

2.从程序列表中选择PDF 查看器或编辑器。^{(PDF viewer or editor)}

3. 选中始终使用此应用打开 .pdf 文件^{(Always use this app to open .pdf files)}旁边的框，然后选择确定^(OK)。

苹果系统^(macOS)

1. 按住 Control 键单击或右键单击任何PDF 文件，然后选择^{(PDF file and select)} Get Info。

2. 打开打开方式下的下拉菜单，^{(Open with)}然后选择您喜欢的PDF 查看器或编辑器^{(PDF viewer or editor)}。 

3. 选择全部更改^{(Change All)}。

注意：^(Note:)如果您无法进行任何更改，请尝试单击信息窗口^{(Info window)}左下角的锁定^(Lock)图标。

直接下载有助于节省时间

在浏览器的内置PDF 查看器中打开^{(PDF viewer)}PDF^(PDFs)后，您始终可以下载它们，但从长远来看，自动化该过程可以节省大量点击。不要^(Don)忘记^{(t forget)}尝试这些顶级PDF实用^(PDF)程序来查看和编辑您的下载。

Disable the Default Built-In PDF Viewer in Chrome, Firefox, Edge, Safari

Everу major web browser—be it Chrome, Firefox, Edgе, or Safari—features a built-in PDF νiewеr that autоmaticallу opens PDF documents you come across. While that’s a quick and sеamless way to start reading them, you probably miss the advanced featυres in your preferred PDF reader or edіtor. Hence, you may prefer directly downloading PDFs instead.

The instructions below will show what you must do to disable the default built-in PDF viewer in Chrome, Firefox, and Edge. That forces your browser to download PDFs to local storage. Unfortunately, you can’t do the same in Safari, but a useful workaround exists that lets you download PDFs without opening them.

Disable the Built-In PDF Viewer in Chrome

In Google Chrome, you have the option of downloading PDFs instead of opening them. That also deactivates the browser’s built-in PDF viewer.

1. Open the Chrome menu (select icon with three dots at the top-right of the window) and choose Settings.

2. Select Privacy and security on the sidebar.

3. Select Site Settings.

4. Scroll down and select Additional content settings.

5. Select PDF documents.

6. Select the radio button next to Download PDFs.

That should disable the PDF viewer in Chrome. If you want to re-enable it later, repeat the steps above but select Open PDFs in Chrome in step 6.

Disable the Built-in PDF Viewer in Firefox

Mozilla Firefox not only lets you disable its built-in PDF viewer but also allows you to pick between downloading documents or having them open automatically in your computer’s default PDF viewer.

1. Open the Firefox menu (select the icon with three-stacked lines at the top-right of the screen) and choose Settings.

2. Under the General tab, scroll down to Files and Applications > Applications.

3. Select Portable Document Format (PDF) and set the Action to Save File or Use macOS/Windows default application.

You’ve disabled the PDF viewer in Firefox, and any PDF documents will download or launch in your PC or Mac’s default PDF viewer (depending on the setting you selected).

If you want to re-enable the PDF viewer in Firefox, repeat the steps above but select Open in Firefox in step 3.

Disable the Built-in PDF Viewer in Edge

Just like with Chrome, you can configure Microsoft Edge to download PDFs to local storage. All that takes is a brief visit to the browser’s settings page.

1. Open the Edge menu (select icon with three dots at the top-right of the screen) and choose Settings.

2. Select Cookies and Site Permissions on the sidebar.

3. Scroll down the screen and select PDF documents.

4. Turn on the switch next to Always download PDFs.

You’ve disabled the default PDF viewer in Edge. If you want to re-enable it later, repeat the steps above but turn off the switch next to Always download PDFs in step 4.

Bypass the PDF Viewer and Force-Download PDFs in Safari

Unlike other browsers, you don’t have an option to disable the PDF viewer on the Mac’s native Safari browser. But you can choose to download a PDF without opening it. 

To do that, just hold down the Option key while selecting a link that points to a PDF file. Try practicing it here.

However, if your Mac runs an old version of macOS (such as macOS 10.13 High Sierra or earlier), running the following command in Terminal will disable the built-in PDF viewer in Safari:

defaults write com.apple.Safari WebKitOmitPDFSupport -bool YES

Note: If you want to re-activate the PDF viewer later, rerun the same command, replacing YES with NO.

Change the Default Download Location in Your Web Browser

By default, every web browser saves PDFs (and other downloads) into the Downloads folder on your PC or Mac. Here’s a quick run-through to changing the download location in Chrome, Firefox, Edge, and Safari. For more information, check out our guide to changing the download location in any browser.

Google Chrome

Revisit Chrome’s Settings page and select Advanced > Downloads on the sidebar. Then, use the Change button next to Location to specify a different directory. 

Mozilla Firefox

Open Firefox’s Settings page and scroll down to the Files and Applications section. Under Downloads, select the Choose button to pick a different download directory.

Microsoft Edge

Re-open the Settings page in Edge and select Downloads on the sidebar. Then, select Change next to Location to switch download directories.

Apple Safari

Select Safari > Preferences on the menu bar. Then, under the General tab, open the pull-down menu next to File download location and select Other to change the download directory.

Change the Default PDF Viewer in Windows and macOS

After downloading a PDF to your PC, double-clicking it will open the file in the default  PDF viewer on your computer (Microsoft Edge in Windows and Preview in macOS).

If you prefer having a different program open your PDFs always, you must change the default PDF viewer.

Windows

1. Right-click any PDF file and select Open with > Choose another app. 

2. Select the PDF viewer or editor from the list of programs.

3. Check the box next to Always use this app to open .pdf files and select OK.

macOS

1. Control-click or right-click any PDF file and select Get Info.

2. Open the pull-down menu under Open with and select your preferred PDF viewer or editor. 

3. Select Change All.

Note: If you can’t make any changes, try clicking the Lock icon at the lower-left corner of the Info window.

Direct Downloads Help Save Time

You can always download PDFs after opening them in your browser’s built-in PDF viewer, but automating the procedure saves lots of clicks in the long run. Don’t forget to try these top PDF utilities to view and edit your downloads.

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