您是否有时难以阅读文本或理解笔记本电脑显示屏上的图像？学习使用放大工具可以让你的生活更轻松。放大镜可让您放大和缩小计算机屏幕。
如果您的计算机屏幕非常小，或者您的眼睛有缺陷或难以阅读细小的文本，您会发现这些工具很有用。有趣的是，Windows和 macOS 都带有内置放大镜，其性能优于许多第三方屏幕放大软件。我们将向您展示如何启用和使用这些工具来放大您的 PC 或Mac。
在 Mac 上放大和缩小
macOS “Zoom” 引擎附带各种易于访问的功能，允许用户以多种方式放大屏幕上的元素。让我们向您展示如何使用基础知识。
使用键盘快捷键放大对象大小(Magnify Object Sizes Using Keyboard Shortcuts)
键盘快捷键是(Keyboard shortcuts are timesavers)节省时间和救生员。掌握这些用于放大和缩小项目、对象和网页的快捷方式将使您的工作效率提高一英里。要使用键盘快捷键放大和放大屏幕上的项目，您需要先激活 macOS 的内置放大镜。
前往系统偏好设置(System Preferences)，选择辅助功能(Accessibility)，单击侧边栏上的缩放(Zoom)并选中使用键盘快捷键进行缩放(Use keyboard shortcuts to zoom)的框。
之后(Afterward)，前往您要放大的屏幕，然后按Option + Command +等号(Equals sign)进行放大。
按住组合键可将屏幕放大率不断增加一级。请注意，macOS缩放(Zoom)工具可让您将Mac屏幕放大至其常规尺寸的 40 倍。
要缩小，请按Option + Command +减号(Minus sign)将屏幕放大率降低一级。
最后一个键盘快捷键可让您切换Mac的缩放比例。将Mac的屏幕保持正常大小，按Option + Command + 8恢复到最后的缩放量/级别。再次按下组合键可终止缩放模式并将屏幕恢复为正常大小。
使用触控板手势缩放(Zoom Using Trackpad Gestures)
您还可以通过在Mac 的触控板上(Mac’s trackpad)双击三个手指来放大屏幕上的元素。这是在 macOS 中放大和缩小文本和图像的更快方法。默认情况下未启用此选项，因此您必须在高级辅助功能菜单中手动激活它。
转到System Preferences > Accessibility > Zoom > Advanced，前往Controls选项卡，选中Use trackpad gesture to zoom，然后单击OK保存更改。
然后，在触控板上双击三个手指，当屏幕上出现放大镜图标时，将手指向上滑动触控板。
这将放大 Mac 的显示屏。要缩小，请在触控板上双击三个手指并向下滑动所有三个手指，直到屏幕放大倍数达到您喜欢的大小。
使用滚动手势缩放(Zoom Using Scroll Gestures)
此缩放选项可让您使用修饰键（Control、Command或Option）和触控板或鼠标放大 Mac 屏幕。
转到系统偏好设置(System Preferences)>辅助功能(Accessibility)>缩放(Zoom)> 选中使用带有修饰键的滚动手势进行缩放(Use scroll gesture with modifier keys to zoom)，然后在复选框下方的下拉按钮中选择您喜欢的修饰键。
如果您选择Control作为修改键，请将光标移动到要缩放的部分，按住Control 键(Control key)，然后在触控板上向上滑动两根手指。
macOS 将根据选定的缩放样式放大您的屏幕：全屏、分屏或画中画。
“全屏”缩放样式将放大整个屏幕，而“分(Split)屏”缩放将在 Mac 屏幕的顶部显示放大的项目。“画中画”缩放将在矩形放大镜中显示屏幕的缩放部分。您可以使用光标或插入符号将放大镜移动到屏幕的不同部分。
在 Windows 中放大和缩小
默认情况下， Windows(Windows)内置的放大工具（称为“放大镜”）也被禁用。我们将向您展示如何激活和使用该工具来放大和缩小Windows PC 屏幕。
在 PC 上的任意位置按Windows 徽标键(Windows logo key)+加号图标(Plus icon)将激活Windows 放大镜(Windows Magnifier)。如果您想跟随更长的路由器，请前往设置(Settings)>轻松使用(Ease of Access)>放大镜(Magnifier)，然后打开打开放大镜(Turn on Magnifier)。
Windows 将立即在屏幕上启动放大镜(Magnifier)工具栏。您可以通过工具栏和下面列出的其他方法放大屏幕。
方法一：(Method 1:)单击工具栏上的加号(plus icon)和减号图标(minus icon)，将显示尺寸以100%的增量放大和缩小。
方法2：(Method 2:)按Windows键(Windows key)+加(Plus icon)号放大或Windows键(Windows key)+减号(Minus icon)缩小。
方法 3：(Method 3:)在放大镜设置菜单（Windows 键(Windows key)+ Ctrl + M）中，单击“更改缩放级别”标题下的加号(plus)或减号图标(minus icon)也将分别放大和缩小屏幕。
方法 4：(Method 4:)如果您使用带有滚轮的外接鼠标，请按住Control + Alt并向上滚动滚轮以放大屏幕。要缩小，请按住Control组合键并向下滚动滚轮。
如果您对默认 (100%) 缩放增量不满意，请点击放大镜(Magnifier)设置菜单中的“更改缩放增量”下拉按钮，然后选择其他放大增量选项。
Windows 放大镜视图选项(Windows Magnifier View Options)
Windows 还拥有三种放大视图：全屏(Fullscreen)、停靠(Docked)和镜头(Lens)。
“停靠”视图会将缩放后的项目投影在 PC 屏幕的顶部。在“镜头”视图中，您放大的项目将出现在一个矩形放大镜中。这类似于 macOS 设备上的“画中画”缩放模式。
如果您希望放大的项目占据整个屏幕，请选择“全屏”视图。
快速提示：(Quick Tip:)按Windows 徽标键(Windows logo key)+ Esc可禁用或终止Windows中的(Windows)放大镜(Magnifier)工具。
不再紧张你的眼睛
这些屏幕放大工具是增强计算机使用体验的一些辅助功能(accessibility features that enhance computer usage experiences)，特别是对于有视力问题、障碍或任何形式的视力障碍的个人。习惯这些工具和快捷方式，您(Get)将永远不必费力地查看计算机屏幕上的内容。
How to Zoom In and Zoom Out on Mac and PC
Do you sometimes strugglе to read textѕ or make sense оf images on your laptop’s display? Learning to use magnification tools can make your life easier. Magnifiers let yоu zoom in and zoom out on your computer’s screen.
You’ll find these tools useful if your computer’s screen is super small or if you have an eye defect or condition that makes it difficult to read tiny texts. Interestingly, both Windows and macOS ship with built-in magnifiers that outperform many third-party screen magnification software. We’ll show you how to enable and use these tools to zoom in on your PC or Mac.
Zoom In and Zoom Out on Mac
The macOS “Zoom” engine ships with a variety of accessibility-inclined features that allow users to magnify on-screen elements in several ways. Let’s show you how to use the basics.
Magnify Object Sizes Using Keyboard Shortcuts
Keyboard shortcuts are timesavers and lifesavers. Mastering these shortcuts for zooming in and out on items, objects, and web pages will shoot up your productivity by a mile. To use keyboard shortcuts to zoom in and on items on the screen, you’ll need to first activate macOS’ built-in magnifier.
Head to System Preferences, select Accessibility, click Zoom on the sidebar and check the box that reads Use keyboard shortcuts to zoom.
Afterward, head to the screen you want to magnify and press Option + Command + Equals sign to zoom in.
Press or hold the key combinations to keep increasing the screen magnification by one level. Note that the macOS Zoom tool lets you magnify a Mac screen up to 40 times its regular size.
To zoom out, press Option + Command + Minus sign to reduce the screen magnification by one level.
There’s one last keyboard shortcut that lets you switch your Mac in and out of zoom. With your Mac’s screen in its regular size, press Option + Command + 8 to revert to the last amount/level of zoom. Press the key combinations again to terminate zoom mode and return your screen to regular size.
Zoom Using Trackpad Gestures
You can also magnify on-screen elements by double-tapping three fingers on your Mac’s trackpad. This is an even faster way to zoom in and zoom out on texts and images in macOS. This option isn’t enabled by default, so you’ll have to manually activate it in the advanced accessibility menu.
Go to System Preferences > Accessibility > Zoom > Advanced, head to the Controls tab, check Use trackpad gesture to zoom, and click OK to save the change.
Afterward, double-tap three fingers on the trackpad and swipe the fingers up the trackpad when the magnifier icon appears on the screen.
That’ll zoom in on your Mac’s display. To zoom out, double-tap three fingers on the trackpad and swipe them down all three fingers until the screen magnification gets to your preferred size.
Zoom Using Scroll Gestures
This zoom option lets you magnify your Mac’s screen using a modifier key (either Control, Command, or Option) and your trackpad or mouse.
Go to System Preferences > Accessibility > Zoom > check Use scroll gesture with modifier keys to zoom and select your preferred modifier key in the drop-down button below the checkbox.
If you choose Control as your modifier key, move your cursor to the section you want to zoom, press and hold the Control key, and slide two fingers up the trackpad.
macOS will magnify your screen based on the selected zoom style: full screen, split-screen, or picture-in-picture.
The “Full screen” zoom style will magnify the entire screen while “Split screen” zoom will display the magnified item at the top-section of your Mac’s screen. “Picture-in-picture” zoom will display the zoomed section of the screen in a rectangular magnifier. You can use the cursor or caret to move the magnifier to different sections of the screen.
Zoom In and Zoom Out in Windows
Windows built-in magnification tool (called “Magnifier”) is also disabled by default. We’ll show you how to activate and use the tool to zoom in and zoom out on your Windows PC screen.
Pressing the Windows logo key + Plus icon anywhere on your PC will activate the Windows Magnifier. If you want to follow the longer router, head to Settings > Ease of Access > Magnifier and toggle on Turn on Magnifier.
Windows will immediately launch the Magnifier toolbar on the screen. You can magnify the screen from the toolbar and via other methods listed below.
Method 1: Click the plus icon and minus icon on the toolbar will enlarge and reduce the display size in 100% increments.
Method 2: Press Windows key + Plus icon to zoom in or Windows key + Minus icon to zoom out.
Method 3: In the Magnifier settings menu (Windows key + Ctrl + M), clicking the plus or minus icon under the “Change zoom level” header will also zoom in and zoom out the screen, respectively.
Method 4: If you’re using an external mouse with a scroll wheel, press and hold Control + Alt and roll the scroll wheel upwards to zoom in on the screen. To zoom out, hold the Control key combination and roll the scroll wheel downwards.
If you aren’t satisfied with the default (100%) zoom increments, tap the “Change zoom increments” drop-down button in the Magnifier settings menu and select other magnification increment options.
Windows Magnifier View Options
Windows also boast of three magnification views: Fullscreen, Docked, and Lens.
The “Docked” view will project the zoomed item at the top section of your PC screen. In the “Lens” view, items you zoom in on will appear in a rectangular magnifying lens. This is similar to the “Picture-in-picture” zoom mode on macOS devices.
Select the “Full screen” view if you want the magnified item to occupy the entire screen.
Quick Tip: Press the Windows logo key + Esc to disable or terminate the Magnifier tool in Windows.
Strain Your Eyes No More
These screen magnification tools are some of the accessibility features that enhance computer usage experiences, particularly for individuals living with vision problems, disorders, or any form of visual impairment. Get accustomed to these tools and shortcuts and you’ll never have to struggle to view content on your computer’s screen.
