了解如何在PowerPoint中更改(PowerPoint)幻灯片大小(Slide Size)始终是一个好主意，因为您可能必须使演示文稿适应不同的设备。您(Did)是否知道PowerPoint幻灯片的默认大小取决于您使用的程序版本？这也是为什么相同的内容在不同设备上看起来可能不同的另一个原因，因此做好准备迎接惊喜并学会在Microsoft PowerPoint中正确缩放演示文稿并没有什么坏处。本教程说明如何使用Windows 10、iPhone 或Mac更改(Mac)PowerPoint幻灯片大小(Slide Size)以匹配任何设备的屏幕：
注意：(NOTE:)本指南适用于Microsoft PowerPoint 2016和 2019。如果您不确定您的PowerPoint版本，请阅读我有哪些版本的 PowerPoint？(What version of PowerPoint do I have?). 您可以直接从 Microsoft 下载 PowerPoint(download PowerPoint straight from Microsoft)，但您必须拥有Microsoft Office套件或订阅Office 365才能使用它。(Office 365)本教程仅涵盖 Windows 10、iOS 和 macOS，因为更改 PowerPoint幻灯片大小(Slide Size)的选项在 Android 上不可用。
首先(First)要做的事：关于PowerPoint幻灯片尺寸
你已经完成了你的研究，练习了你的演讲，并花时间为你的听众添加视觉辅助工具。但是，如果您在Microsoft PowerPoint 2019中创建演示文稿，其默认幻灯片尺寸为宽屏 (16:9)(Widescreen (16:9))，并且您现在必须使用标准 (4:3)(Standard (4:3))尺寸的旧投影仪，这一切都可能被毁掉。您的幻灯片看起来与您最初的预期不同，需要进行调整以适合您当前使用的屏幕。
为避免任何可能导致页面边缘被截断或被Microsoft PowerPoint中的黑条框住的不匹配，请在知道将在何处以及如何交付演示文稿后立即更改幻灯片大小。(Slide Size)不幸的是，并不是每个人都知道在每种情况下哪种PowerPoint 幻灯片尺寸(Slide Size)最好。如果您有疑问，您始终可以依靠两种最常见的PowerPoint幻灯片尺寸：
- 标准 (4:3) – (Standard (4:3))PowerPoint 2010和以前版本中的默认 PPT幻灯片大小。(Slide Size)在分辨率较低的旧屏幕、旧投影仪、SlideShare等在线演示共享平台和 iPad 上效果最佳。
- 宽屏 (16:9) – (Widescreen (16:9))Microsoft PowerPoint 2013及更高版本中的默认设置。最适用于宽高比的新屏幕（高清电视(HDTVs)、智能电视(Smart TVs)、液晶显示器(LCDs)、4K 显示器）、新的或高清投影仪、Microsoft Surface设备以及(Microsoft Surface)YouTube或Vimeo等在线平台。大多数笔记本电脑使用 16:9 的纵横比，但 MacBook 的 16:10 纵横比除外。
常见的 PPT 幻灯片大小选项
这是 iPhone 上仅有的两个可用设置。但是，Microsoft PowerPoint在(Microsoft PowerPoint)Windows 10和 macOS 中为您提供了更多幻灯片大小(Slide Size)选项，例如Letter Paper或A4 Paper，它们更适合打印您的演示文稿。最重要的是，如果您想尽可能优化所有内容，您可以输入自定义PPT幻灯片大小(Slide Size)（以英寸、厘米或像素为单位），正如您将在本指南中看到的那样。
重要提示：(IMPORTANT:)最好在设计演示文稿之前在PowerPoint中更改(PowerPoint)幻灯片大小(Slide Size)，以便为您的想法创建一个完美的画布。如果您在添加内容后更改PowerPoint幻灯片的大小，您所包含的元素和图像可能会出现失真并需要进一步调整，因此您越早发现您用于演示的设备的纵横比或分辨率(aspect ratio or resolution)， 更好。
如何在Windows 10中更改(Windows 10)PowerPoint 幻灯片大小(PowerPoint Slide Size)
打开您要使用的Microsoft PowerPoint演示文稿或开始一个新项目。(Microsoft PowerPoint)要更改PowerPoint幻灯片尺寸，请首先访问应用功能区上的“设计”选项卡。(Design)然后，您可以在右侧的“自定义”部分中找到“(Customize)幻灯片大小(Slide Size)”按钮。
(Change)从“设计(Design)”选项卡更改PowerPoint幻灯片的大小
根据您的屏幕和PowerPoint窗口的大小，该选项可能会被隐藏。如果您看不到该按钮，请按自定义(Customize)以显示它，然后单击或点击幻灯片大小(Slide Size)。
按(Press)PowerPoint幻灯片大小(PowerPoint Slide Size)按钮
这将打开一个下拉菜单，其中包含三个可用选项：
在PowerPoint中，使用这三个选项之一更改幻灯片大小(Slide Size)
- 标准 (4:3)(Standard (4:3)) - 单击或点击此选项可获得 10 x 7.5 英寸或 25.4 x 19.05 厘米的幻灯片。
- 宽屏 (16:9)(Widescreen (16:9)) - 按下以获得 13.33 x 7.5 英寸或 33.867 x 19.05 厘米的幻灯片。
- 自定义幻灯片大小(Custom Slide Size)- 如果您正在寻找与我们讨论的两种常用设置不同的东西，请访问此选项。
选择最后一个选项会打开“幻灯片大小(Slide Size)”弹出窗口，您可以在其中选择要使用的自定义大小或更改其他幻灯片方面，例如它们的方向。
Windows 10中的PowerPoint 幻灯片大小(PowerPoint Slide Size)弹出窗口
虽然您可以使用窗口右侧的选项来调整方向(Orientation)选项，但与PowerPoint幻灯片大小相关的设置位于(PowerPoint)幻灯片大小(Slide Size)弹出窗口的左侧。单击或点击“幻灯片尺寸：”(“Slides sized for:”)字段以访问下拉菜单，其中包含可用于PowerPoint幻灯片尺寸的其他预设。
(Change)使用预设选项之一更改PowerPoint幻灯片的大小
要修改“宽度(Width)”和“高度(Height)”字段，请使用它们旁边的箭头按钮或将您喜欢的特定值写入每个框。在PowerPoint中更改幻灯片大小时，您可以通过在所需值旁边相应地键入px、in或cm来使用像素、英寸或厘米。
输入自定义值以更改PowerPoint幻灯片大小
选择完幻灯片大小后，在“幻灯片大小(Slide Size)”窗口中单击“确定”。(OK)在Microsoft PowerPoint 2016及更高版本中，您会看到一个弹出窗口，您可以选择如何更改幻灯片大小。这仅在缩小到更小的幻灯片尺寸(Slide Size)时才会发生- 例如，从Widescreen到Standard。有两个可用选项：
确定在PowerPoint中更改(PowerPoint)幻灯片大小(Slide Size)时内容会发生什么情况
- 最大化(Maximize)- 单击或点击两个“最大化(Maximize)”按钮中的任何一个，以使幻灯片的内容保持原样，而无需调整它们的大小。如果幻灯片上有很多信息，则某些元素可能不再适合并溢出。
- 确保适合(Ensure Fit)- 减小文本或图像的大小以适应较小的幻灯片大小。虽然您的内容没有被剪掉，但它确实会与新选择的大小成比例地缩小。
新的幻灯片大小会立即应用于您的PowerPoint演示文稿。
提示：(TIP:)如果您打算在Windows设备上进行演示，请阅读我们的教程，其中列出了7 种方法来确定屏幕分辨率( 7 ways to find out your screen resolution)，从而为幻灯片找到合适的尺寸。
如何在Mac上的PowerPoint中更改(PowerPoint)幻灯片大小(Slide Size)
在Mac(Mac)上更改 PowerPoint幻灯片大小的选项与(Slide Size)Windows中的类似。访问(Access)“设计(Design)”选项卡，然后单击右侧的“幻灯片大小”选项。(Slide Size)
单击(Click)macOS Catalina版本上的PowerPoint 幻灯片大小按钮(PowerPoint Slide Size)
您还可以在 macOS 版本的 PowerPoint 上获得一个包含三个可用选项的下拉菜单：
通过选择Mac上可用的三个选项之一来更改PowerPoint幻灯片的大小(PowerPoint)
- 标准 (4:3)(Standard (4:3)) – 如果您想要 10 x 7.5 英寸或 25.4 x 19.05 厘米的幻灯片，请单击此选项。
- 宽屏 (16:9)(Widescreen (16:9)) – 单击此设置可获得 13.33 x 7.5 英寸或 33.867 x 19.05 厘米的幻灯片。
- 页面设置(Page Setup)- 如果以前的常用尺寸不是您想要的演示文稿，您可以定义自定义尺寸（预设或自定义）。单击它会打开如下所示的页面设置(Page Setup)弹出窗口。
从macOS Catalina上的(Catalina)页面设置(Page Setup)弹出窗口更改PPT 幻灯片大小(PPT Slide Size)
页面设置(Page Setup)弹出窗口中的大小选项与Windows中的相同。向上滚动(Scroll)到上一章，了解更多关于“幻灯片尺寸”下拉菜单中的预设值或您可以使用英寸 ( (“Slide(s) sized for”)in )、厘米 ( cm ) 或在“宽度(Width)”和“高度(Height)”字段中插入的自定义值像素（像素(px)）。
完成后，单击“确定”，(OK,)您会看到一个不同的弹出窗口，询问您如何处理您的内容。如果您选择Scale，PowerPoint会尝试将所有内容调整为新的比例大小，并在需要时减小您的内容大小。单击“不(Don’t )缩放(Scale)”按钮可使元素保持其原始大小，即使它们不再适合。
在调整 PowerPoint 幻灯片大小时决定(Decide)缩放或保留原始内容
新的幻灯片大小(Slide Size)会立即应用于演示文稿，并根据您的喜好调整幻灯片内容的大小或根据需要剪切。
如何在 iPhone 上的PowerPoint中更改(PowerPoint)幻灯片大小(Slide Size)
在您的 iPhone 稍微更基本的PowerPoint版本上，通过访问设计(Design)选项来更改幻灯片大小，该选项也包含 iOS 上的设置。但是，您需要遵循的步骤在这些设备上并不那么简单。首先(First)，点击右下角的更多按钮。(More)它的图标看起来像三个水平点。
按下 iPhone 屏幕右下角的三个水平点图标
您现在可以查看和编辑您所在的PowerPoint选项卡。点击主页(Home)按钮以查看其他可用选项。
按主页(Press Home)更改iPhone 上的PowerPoint选项卡(PowerPoint)
这将打开一个下拉菜单，您最终可以在其中找到“设计(Design)”选项卡。按下它。
点击iPhone 上的PowerPoint 设计选项卡(PowerPoint Design)
点击设计(Design)屏幕中列出的幻灯片大小按钮。(Slide Size)
按(Press)iPhone 上显示的PowerPoint 幻灯片大小按钮(PowerPoint Slide Size)
只有两个选项可用，我们在本指南的第一章中详细介绍了它们。点击您想要的幻灯片大小(Slide Size)，它会立即应用。
从 iPhone 上可用的两个选项中选择PowerPoint 幻灯片大小(PowerPoint Slide Size)
提示：(TIP:)如果您需要了解 iOS 设备的宽高比，请阅读我们的教程，列出3 种查找 iPhone 或 iPad 屏幕分辨率的方法(3 ways to find the screen resolution of your iPhone or iPad)。
您最终使用了哪种PowerPoint 幻灯片尺寸？(PowerPoint Slide Size)
如果您必须在工作中定期创建和发送PowerPoint演示文稿，则可能无法选择完美的尺寸，因为您无法控制观众使用的设备。您能做的最好的事情就是使用我们的指南来确保内容针对大多数观众进行了优化。如果您向更多的观众展示PPT或PPTX项目，请务必查看您的幻灯片，提前在您计划使用的确切设备上测试您的文件，并留出时间进行任何调整。
我们倾向于坚持使用常见的PowerPoint幻灯片尺寸，这对于我们遇到的大多数设备来说已经足够了。那你呢？您选择了哪种PowerPoint 幻灯片尺寸(Slide Size)？您(Did)是否发现有必要创建一个自定义的，或者您最终使用了预设的？在评论中告诉我们你的故事。
How to change the PowerPoint Slide Size: All you need to know -
It’s always a good idea to know how to chаnge Slide Size in PowerPoint, as you might have to adapt your presentation to different devices. Did you know that the default size of a PowerPoint slide depends on the version of the program you’re using? That’s another reason why the same content can look different on various devices, so it doesn’t hurt to be prepared for surprises and learn to scale your presentation properly in Microsoft PowerPoint. This tutorial illustrates how to change the PowerPoint Slide Size to match the screen of any device, using Windows 10, your iPhone, or Mac:
NOTE: This guide applies to Microsoft PowerPoint 2016 and 2019. If you’re not sure about your PowerPoint version, read What version of PowerPoint do I have?. You can download PowerPoint straight from Microsoft, but you must own the Microsoft Office suite or have an Office 365 subscription to use it. This tutorial covers only Windows 10, iOS, and macOS, because the option to change the PowerPoint Slide Size is not available on Android.
First things first: About PowerPoint slide dimensions
You’ve done your research, practiced your speech, and spent time adding visual aids for your audience. However, it can all be ruined if you created a presentation in Microsoft PowerPoint 2019, whose default slide size is Widescreen (16:9), and you now have to use an old projector with the Standard (4:3) size. Your slides look different from what you originally intended and need to be adjusted to fit the screen you’re currently using.
To avoid any mismatches that might result in your pages being cut off on the edges or framed by black bars in Microsoft PowerPoint, change Slide Size as soon as you know where and how you’ll deliver your presentation. Unfortunately, not everyone knows which PowerPoint Slide Size is best in each situation. If you’re in doubt, you can always rely on the two most common PowerPoint slide dimensions:
- Standard (4:3) – the default PPT Slide Size in PowerPoint 2010 and previous versions. Works best on older screens with low resolutions, old projectors, online presentation sharing platforms like SlideShare, and iPads.
- Widescreen (16:9) – the default in Microsoft PowerPoint 2013 and newer. Works best on new screens with a wide aspect ratio (HDTVs, Smart TVs, LCDs, 4K monitors), new or HD projectors, Microsoft Surface devices, and online platforms like YouTube or Vimeo. Most laptops use a 16:9 aspect ratio, with the exception of MacBook’s 16:10 aspect ratio.
Common PPT Slide Size options
These are the only two settings available on iPhones. However, Microsoft PowerPoint offers you more Slide Size options in Windows 10 and macOS, such as Letter Paper or A4 Paper, which are better suited for printing your presentation. On top of that, if you want to optimize everything as much as possible, you can input a custom PPT Slide Size in inches, centimeters, or pixels, as you’re about to see in this guide.
IMPORTANT: It’s best to change Slide Size in PowerPoint before designing your presentation, to create a perfect canvas for your ideas. If you change the size of a PowerPoint slide after adding content to it, the elements and images you included might appear distorted and need further adjustments, so the sooner you find out the aspect ratio or resolution of the device you’re using for your presentation, the better.
How to change the PowerPoint Slide Size in Windows 10
Open the Microsoft PowerPoint presentation you want to work with or start a new project. To change the PowerPoint slide dimensions, first access the Design tab on the app’s ribbon. Then, you can find the Slide Size button in the Customize section on the right.
Change size of PowerPoint slide from the Design tab
Depending on your screen and the size of the PowerPoint window, the option might be hidden. If you can’t see the button, press Customize to reveal it, and then click or tap on Slide Size.
Press the PowerPoint Slide Size button
This opens a dropdown menu with three available options:
In PowerPoint, change Slide Size using one of these three options
- Standard (4:3) - click or tap on this option to get slides of 10 x 7.5 inches or 25.4 x 19.05 cm.
- Widescreen (16:9) - press to get slides of 13.33 x 7.5 inches or 33.867 x 19.05 cm.
- Custom Slide Size - access this option if you are looking for something different than the two commonly used settings we discussed.
Choosing the last option opens the Slide Size pop-up window, where you can select a custom size to work with or change other slide aspects, like their orientation.
The PowerPoint Slide Size pop-up in Windows 10
While you can use the options on the right of the window to tweak the Orientation options, the settings related to the size of a PowerPoint slide are on the left side of the Slide Size pop-up. Click or tap the “Slides sized for:” field to access a dropdown menu with other presets you can use for your PowerPoint slide dimensions.
Change size of PowerPoint slide with one of the preset options
To modify the Width and Height fields, use the arrow buttons next to them or write the specific values you prefer into each box. When you change slide size in PowerPoint, you can use pixels, inches, or centimeters by typing px, in, or cm accordingly, next to the value you want.
Enter a custom value to change the PowerPoint slide size
Once you are done choosing the slide size, click OK in the Slide Size window. In Microsoft PowerPoint 2016 and newer, you get a pop-up window and can choose how to change the slide size. This only happens when scaling down to a smaller Slide Size - e.g., from Widescreen to Standard. There are two available options:
Decide what happens with the content when you change Slide Size in PowerPoint
- Maximize - click or tap on either of the two Maximize buttons to leave the contents of your slides as they are, without resizing them. If there is a lot of information on a slide, some elements might not fit anymore and bleed out.
- Ensure Fit - reduces the size of your texts or images to fit the smaller slide size. While your content is not cut out, it does scale down in proportion to the new selected size.
The new slide size is immediately applied to your PowerPoint presentation.
TIP: If you are going to hold your presentation on a Windows device, read our tutorial listing 7 ways to find out your screen resolution to find the right size for your slides.
How to change Slide Size in PowerPoint on your Mac
The options to change PowerPoint Slide Size on your Mac are similar to the ones in Windows. Access the Design tab and click on the Slide Size option on the right.
Click the PowerPoint Slide Size button on the macOS Catalina version
You also get a dropdown menu with three available options on the macOS version of PowerPoint:
Change the size of a PowerPoint slide by choosing one of the three options available on your Mac
- Standard (4:3) – click on this option if you want slides of 10 x 7.5 inches or 25.4 x 19.05 cm.
- Widescreen (16:9) – clicking on this setting gets you slides of 13.33 x 7.5 inches or 33.867 x 19.05 cm.
- Page Setup – lets you define a custom size (preset or custom) if the previous common sizes are not what you want for your presentation. Clicking on it opens the Page Setup pop-up seen below.
Change the PPT Slide Size from the Page Setup pop-up on macOS Catalina
The size options in the Page Setup pop-up are identical to the ones found in Windows. Scroll up to the previous chapter to learn more about the preset values in the “Slide(s) sized for” dropdown menu or the custom ones you can insert in the Width and Height fields using inches (in), centimeters (cm), or pixels (px).
When you are done, click OK, and you get a different pop-up, asking you how to handle your content. If you choose to Scale, PowerPoint tries to fit everything into the new scale size, reducing your content size if needed. Clicking the Don’t Scale button keeps elements at their original sizes, even if they no longer fit correctly.
Decide to scale or keep your original content when resizing your PowerPoint slides
The new Slide Size is immediately applied to the presentation, with slide content being resized or cut if needed, according to your preferences.
How to change Slide Size in PowerPoint on your iPhone
On your iPhone’s slightly more basic version of PowerPoint, change slide size by accessing the Design options, which house the setting on iOS as well. The steps you need to follow are, however, not as straightforward on these devices. First, tap on the More button in the lower-right corner. Its icon looks like three horizontal dots.
Press on the three horizontal dots icon in the bottom-right corner of your screen on iPhone
You can now see and edit the PowerPoint tab you’re in. Tap on the Home button to see other available options.
Press Home to change the PowerPoint tabs on your iPhone
This opens a dropdown menu, where you can finally find the Design tab. Press on it.
Tap the PowerPoint Design tab on your iPhone
Tap on the Slide Size button listed in the Design screen.
Press the PowerPoint Slide Size button shown on the iPhone
There are only two options available, and we covered them at length in the first chapter of this guide. Tap on the Slide Size you want, and it is immediately applied.
Choose a PowerPoint Slide Size from the two options available on your iPhone
TIP: If you need to know the aspect ratio of an iOS device, read our tutorial listing 3 ways to find the screen resolution of your iPhone or iPad.
Which PowerPoint Slide Size did you end up using?
If you must regularly create and send PowerPoint presentations at work, it may not be possible to choose the perfect size, as you can’t control the devices your audience is using. The best you can do is use our guidelines to ensure the content is optimized for most viewers. If you show a PPT or PPTX project to a larger audience, make sure to review your slides, test your file in advance on the exact device you plan to use, and leave time for any adjustments.
We tend to stick with the common PowerPoint slide sizes, which are good enough for most devices we come across. What about you? Which PowerPoint Slide Size did you select? Did you find it necessary to create a custom one, or did you end up using the preset ones? Tell us your story in the comments.
