您可以在Windows 10中使用^{(Windows 10)}画图^{(Paint )}和画图 3D^{(Paint 3D)}更改文件大小和分辨率。在这篇文章中，我们将向您展示如何做到这一点。

有时，您可能需要移除图像的背景^{(remove the background of an image)}、减小照片的文件大小或分辨率以符合在线应用程序的限制。您可以使用内置选项——Microsoft Paint和Paint 3D ，而不是购买付费工具。这两种工具都可以帮助您编辑图像。

如何使用MS Paint更改文件大小^{(MS Paint)}

要使用Microsoft Paint^{(Microsoft Paint)}更改文件大小，请执行以下步骤 -

1. 在您的计算机上打开“画图”^(Paint)应用程序。
2. 在画图应用中打开图像。
3. 转到文件 ^(File )选项。
4. 单击另存为^{(Save as )}按钮。
5. 选择一个位置来保存文件。
6. 从保存类型^{(Save as type)}中选择 JPEG 。
7. 单击保存^{(Save )}按钮。

首先，在您的计算机上打开“画图”应用程序^{(open the Paint app)}。您可以使用任务栏^(Taskbar)搜索框打开它。

之后，按Ctrl+O画图”^(Paint)应用程序中打开它。

接下来，单击文件^(File)选项并选择另存为^{(Save as)}。

之后，您需要选择要保存文件的位置。

现在，从保存类型^{(Save as type)}下拉菜单中选择JPEG ，然后单击^{(JPEG )}保存^{(Save )}按钮。

现在，检查新文件的大小并将其与旧文件进行比较。在测试时，一个 15.1 KB 的文件在瞬间变成了 11.9 KB，大约减少了 21%。

如果您在Paint中打开图像并保存文件的副本，大小会自动减小。但是，如果您的图像仅包含一些文本，您可能不会发现显着减少。

如何使用Paint 3D更改文件大小^{(Paint 3D)}

要更改Paint 3D^{(Paint 3D)}中的文件大小，请按照下列步骤操作 -

1. 在您的 PC 上打开 Paint 3D 应用程序。
2. 在 Paint 3D 中打开图像。
3. 单击菜单 ^(Menu )按钮。
4. 选择另存为^{(Save as)}。
5. 选择图像^(Image)作为文件格式。
6. 选择保存文件的位置。
7. 从保存类型^{(Save as type)}中选择2D-JPEG。
8. 单击保存^(Save)按钮。

使用任务栏^(Taskbar)搜索打开Paint 3D应用程序。接下来，在此应用中打开图像。

单击左上角可见的菜单^(Menu)按钮，然后在下一个屏幕上选择另存为。^{(Save as)}

接下来，选择图像^(Image)作为文件格式。

您应该会看到一个熟悉的屏幕，您必须从中选择保存文件的位置，从Save as type中选择^{(Save as type)}2D-JPEG，然后单击Save按钮。

然后，您可以比较新文件和旧文件的大小。测试时，15.1 KB 的文件变成了 9.7 KB，几乎减少了 36%。

如何在 Paint 中更改文件分辨率

要更改Paint^(Paint)中的文件分辨率，请按照下列步骤操作 -

1. 在 Paint 中打开图像。
2. 单击主页选项卡中的调整大小^(Resize)按钮。
3. 选择一个新的分辨率。
4. 单击确定^(OK)按钮。
5. 按 Ctrl+S 保存文件。

让我们详细研究这些步骤。

首先，在Paint中打开图像。为此，您需要先打开 Paint 应用程序^{(open the Paint app)}，然后；您可以使用Ctrl+O快捷键在应用程序中打开图片。现在，确保您位于“主页”^(Home)选项卡中。在这里您可以找到一个名为Resize的选项。您需要单击此选项。

有两种方法可以更改分辨率。您可以按百分比或像素增加或减少尺寸。选择一种方法并根据您的要求设置分辨率。

单击确定^{(OK )}按钮设置分辨率。现在，您可以使用Ctrl+S来保存文件。但是，如果要保存文件的副本，则需要使用“File > Save as选项。

如何在Paint 3D中更改文件分辨率^{(Paint 3D)}

要更改Paint 3D^{(Paint 3D)}中的文件分辨率，请按照以下步骤操作 -

1. 在 Paint 3D 中打开图像。
2. 切换到画布 ^(Canvas )选项卡。
3. 设置分辨率更改方法。
4. 选择新的高度和宽度。
5. 按 Ctrl+S 保存文件。

继续阅读以了解有关这些步骤的更多信息。

首先，打开Paint 3D应用程序并在此工具中打开您的图像。打开文件后，您需要切换到Canvas选项卡。

在这里您可以找到一个下拉菜单，您可以从中选择是按百分比还是按像素更改尺寸。根据您的需要选择一种方法并相应地设置分辨率。

现在，按Ctrl+S保存文件。

额外提示^{(Bonus tip)}：如果您在“锁定纵横比^{(Lock aspect ratio)}”框中保持勾选，则无需单独更改高度和宽度。

我希望这些简单的教程对你有所帮助。

How to change File size and Resolution in Paint & Paint 3D

You can change the file size and resolution using Paint and Paint 3D in Windows 10. In this post, we will show you how to do this.

At times, you might need to remove the background of an image, reduce the file size or resolution of a photograph to comply with an online application’s restriction. Instead of purchasing a paid tool, you can use the in-built options – Microsoft Paint and Paint 3D. Both tools can help you edit images.

How to change file size using MS Paint

To change file size using Microsoft Paint, follow these steps-

1. Open the Paint app on your computer.
2. Open image in the Paint app.
3. Go to the File option.
4. Click the Save as button.
5. Choose a location to save the file.
6. Select JPEG from Save as type.
7. Click the Save button.

To begin, open the Paint app on your computer. You can use the Taskbar search box to open it.

After that, press Ctrl+O and select the image to open it in the Paint app.

Next, click the File option and choose Save as.

Following that, you need to choose a location where you want to save the file.

Now, select JPEG from the Save as type drop-down menu, and click the Save button.

Now, check the size of the new file and compare it with the old one. While testing, a 15.1 KB file became 11.9 KB within moments, which is around 21% reduction.

If you open the image in Paint and save a copy of the file, the size gets reduced automatically. However, if you have an image containing some text only, you might not find a significant reduction.

How to change file size using Paint 3D

To change file size in Paint 3D, follow these steps-

1. Open the Paint 3D app on your PC.
2. Open image in Paint 3D.
3. Click the Menu button.
4. Select Save as.
5. Choose the Image as the file format.
6. Select a location to save the file.
7. Choose 2D-JPEG from Save as type.
8. Click the Save button.

Open the Paint 3D app using the Taskbar search. Next, open the image in this app.

Click the Menu button that is visible on the top-left corner and select Save as on the next screen.

Next, choose Image as the file format.

You should see a familiar screen from where you have to select a location to save the file, select 2D-JPEG from Save as type, and click the Save button.

Then, you can compare the size of the new file with the old one. While testing, the 15.1 KB file became 9.7 KB, which is almost a 36% reduction.

How to change file resolution in Paint

To change file resolution in Paint, follow these steps-

1. Open the image in Paint.
2. Click the Resize button in the Home tab.
3. Select a new resolution.
4. Click the OK button.
5. Press Ctrl+S to save the file.

Let’s delve into the steps in detail.

At first, open the image in Paint. For that, you need to open the Paint app first, and then; you can use Ctrl+O shortcut to open the picture in the app. Now, make sure that you are in the Home tab. Here you can find an option called Resize. You need to click on this option.

There are two ways to change the resolution. You can increase or decrease the dimension by percentage or pixel. Choose a method and set the resolution as per your requirements.

Click the OK button to set the resolution. Now, you can use the Ctrl+S to save the file. However, if you want to save a copy of the file, you need to use File > Save as option.

How to change file resolution in Paint 3D

To change file resolution in Paint 3D, follow these steps-

1. Open the image in Paint 3D.
2. Switch to the Canvas tab.
3. Set resolution changing method.
4. Select new height and width.
5. Press Ctrl+S to save the file.

Read on to know more about these steps.

At first, open the Paint 3D app and open your image in this tool. After opening the file, you need to switch to the Canvas tab.

Here you can find a drop-down menu from where you can choose whether you want to change the dimension by percentage or pixel. Select a method as per your desire and set the resolution accordingly.

Now, press Ctrl+S to save the file.

Bonus tip: If you keep the tick in the Lock aspect ratio box, you do not need to change the height and width separately.

I hope these simple tutorials would help you.

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