您可能使用过很多PDF文件。该格式用户友好，易于查看和打印。有很多应用程序能够打开这种类型的文件，但很少有人知道微软(Microsoft)为此开发了一款名为Reader 的应用程序，(Reader, )它包含在标准Windows 体验(Windows experience)中。该应用程序在Windows 8.1(Windows 8.1)版本中首次引入，并且在Windows 10中也可用。能够打开PDF文件以及XPS 和 TIFF 文件(XPS and TIFF files)的阅读器(Reader)应用程序。在本文中，我们将分享如何使用Reader应用程序打开和使用PDF、XPS 和 TIFF 文件(XPS and TIFF files)：
注意：(NOTE: )本指南适用于运行 Windows 10 和Windows 8.1的计算机和设备。
如何在Windows 8.1和 Windows 10中启动Reader 应用程序(Reader app)
在 Windows 8.1 中，Reader应用程序与(Reader)操作系统(operating system)捆绑在一起。因此，您所要做的就是浏览您的应用程序列表并按下(apps and press)其快捷方式。
另一种方法是在开始(Start)屏幕上键入其名称，然后单击或点击阅读器(Reader)搜索结果。
如果安装，Reader应用程序将显示在您的 Windows 10应用程序列表中，(Apps list, )您可以在其中启动它。
您还可以在Cortana的搜索框中键入(search box and click)“阅读器”("reader") ，然后单击或点击相应的搜索结果(search result)。
当Reader应用程序打开时，其窗口将类似于下面的屏幕截图。
注意：(NOTE:)如果由于某种原因，您的Windows 计算机或设备(Windows computer or device)上未安装Reader应用程序，您可以在此处的(here)Windows 应用商店(Windows Store)中找到它。
如何在Reader 应用程序中打开(Reader app)PDF、XPS 和 TIFF 文件(XPS and TIFF files)
如果应用程序被设置为具有.pdf、.xps和 .tiff 扩展名的文件的默认阅读器(default reader)，您只需双击或双击该文件，它将在阅读器(Reader )应用程序中打开。如果您不知道如何将Reader 应用程序(Reader app )设置为这些格式的默认设置，请查看本指南：在Windows 8.1和Windows 10中设置(Windows 10)默认应用程序(default apps)的简单方法。
打开此类文件的另一种方法是启动应用程序并在其用户界面中按(app and press)“浏览”按钮。(Browse )
在文件资源管理器(File Explorer, )中搜索您的文件，选择它并按打开。(Open.)
您的文件现在将在Reader应用程序中打开。您可以通过在屏幕上向左或向右滑动、使用左右箭头键或按应用程序提供的按钮来翻页。
如果您已完成检出文件并想要关闭它，如果您使用支持触控的设备，请右键单击或从屏幕底部滑动。在窗口的顶部和底部，您会看到应用程序的菜单栏。要关闭文件，请按文件缩略图下方顶部菜单栏(menu bar)上的关闭按钮。(Close )
如何在阅读器应用程序中同时打开多个文件(Reader app)
Reader应用程序允许您一次打开多个文件。打开一个文件后，在屏幕上单击鼠标右键或向上滑动。
按上方菜单栏中的“打开另一个文件(Open another file)”按钮。
接下来，从显示的菜单中选择“在新选项卡中打开文件(Open file in new tab)” 。
如果您需要的文件显示在“最近(Recent )”部分中，您可以从那里选择它。如果没有，只需按浏览(Browse )按钮并打开文件，如上一节所示。
注意：(NOTE: )阅读器(Reader)应用程序只能同时打开五个文件。打开五个以上的文件会关闭第一个打开的文件。如果进行了任何更改，系统将提示您保存对文件所做的任何更改。
要在多个打开的文件之间切换，请在屏幕上单击鼠标右键或向上轻拂，以在上方菜单栏中(menu bar)查看您已打开的所有文件。然后，单击或点击(click or tap)文件的缩略图将其打开。
如何在阅读器应用程序的新窗口中打开文件(Reader app)
假设您想同时查看两个文件，而不必在它们之间不断切换。为此，在阅读器(Reader)应用程序中，右键单击或在屏幕上向上滑动以查看在顶部菜单栏中(menu bar)打开的所有文件。
现在，右键单击或按住任何打开的文件，然后按将出现的“在新窗口中打开("Open in a new window)”按钮。
一个新的阅读器(Reader)窗口将打开您的文件。您可以最小化窗口并将它们并排对齐，这样您就可以同时查看它们。
如果您想了解如何使用Reader(Reader )应用程序打印文件、旋转文档、查看文档中的书签以及使用不同名称保存文件，请转到本教程的下一页。
How to view and use PDF, XPS and TIFF files with the Reader app in Windows
You'vе probably worked with a lot of PDF files. The format is υser-friendly, easy to vіew and easy to print. The are a lot of apps capable of oрening this type of file but few people know that there's an app developed by Microsoft for this purpose, called Reader, included in the standard Windows experience. The app was first introduced with the release of Windows 8.1 and it's also available in Windows 10. The Reader app capable of opening PDF files, as well as XPS and TIFF files. In this article we will share how to use the Reader app to open and work with PDF, XPS and TIFF files:
NOTE: This guide applies to computers and devices which run Windows 10 and Windows 8.1.
How to start the Reader app in Windows 8.1 and Windows 10
In Windows 8.1 the Reader app is bundled with the operating system. So all you have to do is browse through your list of apps and press on its shortcut.
Another way to do it is to type its name on the Start screen and click or tap on the Reader search result.
If installed, the Reader app will show up in your Windows 10 Apps list, where it can be started.
You can also type "reader" in Cortana's search box and click or tap the appropriate search result.
When the Reader app opens, its window will look similar to the screenshot below.
NOTE: If for some reason, the Reader app is not installed on your Windows computer or device, you can find it in the Windows Store, here.
How to open PDF, XPS and TIFF files in the Reader app
If the app is set as the default reader for files with .pdf, .xps and, .tiff extensions, all you have to do is double-click or double-tap the file and it will open in the Reader app. If you don't know how to set the Reader app as default for these formats check out this guide: The easy way to set your default apps in Windows 8.1 & Windows 10.
Another way to do open such files is to start the app and press the Browse button in its user interface.
Search for your file in File Explorer, select it and press Open.
Your file will now be opened in the Reader app. You can turn pages, by swiping left or right on your screen, using the left and right arrow keys or pressing the buttons provided by the app.
If you've finished checking out the file and you want to close it, right-click or swipe from the bottom of the screen if you use a touch-enabled device. At the top and bottom of the window, you'll see the app's menu bars. To close the file, press the Close button, placed on the top menu bar, below the file's thumbnail.
How to open multiple files simultaneously in the Reader app
The Reader app allows you to open more than one file at a time. Once you've opened one file, right-click or flick upwards on the screen.
Press the "Open another file" button from the upper menu bar.
Next, select "Open file in new tab" from the menu that is shown.
If the file you need is displayed in the Recent section you can select it from there. If not, just press the Browse button and open the file as shown in the previous section.
NOTE: The Reader app can only open five files at the same time. Opening more than five files closes the first opened file. You will be prompted to save any changes that you have made to the file if any changes were made.
To switch between multiple opened files, right-click or flick upwards on the screen to view all the files you've opened, in the upper menu bar. Then, click or tap on the file's thumbnail to open it.
How to open files in a new window in the Reader app
Let's suppose you want to see two files at the same time, without having to switch constantly between them. To do this, in the Reader app, right-click or swipe upwards on your screen to see all the files opened in the top menu bar.
Now, right-click or press and hold any of the opened files and press the "Open in a new window" button which will appear.
A new Reader window opens with your file. You can minimize the windows and align them side by side, so you can view them both at the same time.
Go to the next page of this tutorial if you want to learn how to print files, rotate documents, view the bookmarks inside your documents and save files with a different name, using the Reader app.
