您可能想要对图像的部分或全部进行像素化的原因有很多。如果您要修改家庭照片以在线发布，您可能需要对一些家庭成员的面部进行像素化处理。如果您正在编辑扫描的图像，您可能希望在在线发布之前对一些个人数据进行像素化以保护自己。(protect yourself)
您可以通过多种方式在Windows和Mac上使用各种免费或付费的照片编辑器(photo editors)（例如Photoshop和GIMP ）快速像素化图像，或者使用在线服务编辑图像。如果您想知道如何对图像进行像素化，这就是您需要做的事情。
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Ω如何在 Mac 上使用照片像素化图像(ΩHow to Pixelate Images Using Photos on Mac)
像素化图像的最简单方法是使用您已经拥有的工具。如果您是Mac用户，这意味着使用内置的照片(Photos)应用程序来快速像素化您的图像。
照片(Photos)已预装在所有Mac 上(Macs)，因此您无需安装任何额外内容即可开始使用。您可以从Finder应用程序中的(Finder)Applications文件夹或通过 Dock从Launchpad启动(Launchpad)照片。(Photos)
- 要使用“照片(Photos)”应用对图像进行像素化，请从“图库(Library )”选项卡中选择图像，在应用中打开您的图像。如果它不可见，请选择文件(File )>导入( Import )以将其导入。
- 导入照片后，双击“导入(Imports )”选项卡中的图像进行查看。打开图像后，选择右上角的“编辑”选项开始编辑图像。(Edit )
- 图像编辑选项将出现在照片(Photos)应用程序的右侧。虽然照片(Photos)没有内置的像素化工具，但您可以使用润饰(retouch )工具来实现类似的效果。移动润饰(retouch) 滑块(slider)以增加效果，选中复选框以激活它，然后使用鼠标将效果应用到要隐藏的区域。
- 您可以预览右侧的滑块效果。如果您不满意，请在顶部菜单栏中选择“恢复为原始”，或选择(Revert to Original )“完成”(Done )以保存更改。
虽然修饰工具在技术上并没有对图像进行像素化，但它会扭曲它，从而产生类似的效果。但是，如果您想使用块状像素化对图像进行像素化，则需要尝试下面列出的方法之一。
如何在 Windows 上使用 Paint 3D 像素化图像(How to Pixelate Images Using Paint 3D on Windows)
Paint 3D工具是Microsoft Paint的替代品，由Microsoft创建，用于引入原始软件中无法实现的新功能（例如基本 3D 建模）。
但是， Paint 3D(Paint 3D)的一个有用功能是图像的快速像素化工具。Paint 3D应该预先安装在您的 Windows PC 上，但如果没有，您可以从 Microsoft Store 下载并安装它(download and install it from the Microsoft Store)。
- 首先，在您的 PC 上打开Paint 3D应用程序，然后选择(Paint 3D)菜单(Menu )>打开( Open )>浏览文件( Browse Files)以打开您的图像。
- 打开文件后，使用“选择(Select )”工具选择要像素化的图像部分（或选择整个图像以像素化整个图像）。选择后，缩小图像选定部分的大小——这将降低图像选定部分的质量。
- 减小该部分的大小后，通过单击图像上的任何其他位置取消选择它。您现在需要使用“选择(Select )”工具重新选择缩小的图像部分并将其调整为之前的大小，确保不要添加任何空白区域。调整大小后，该部分的图像质量将降低，从而产生像素化效果。
在 Windows 或 Mac 上使用 Adobe Photoshop 像素化图像(Using Adobe Photoshop to Pixelate Images on Windows or Mac)
虽然Adobe Photoshop是(Adobe Photoshop)Windows和Mac用户最知名的专业照片编辑器之一，但它也可以处理非常简单的任务，例如图像像素化。
- 要在Photoshop(Photoshop)中对图像进行像素化，请通过选择“文件(File )” > “打开”打开( Open)图像。
- 使用选择(Select )工具，选择您想要像素化的图像部分。如果要对整个图像进行像素化，请继续下一步。
- 选择图像的一部分后，选择滤镜(Filter )>像素化( Pixelate )>马赛克( Mosaic )以开始像素化过程。
- 在“像素化(Pixelate)”框中，移动“单元格大小(Cell Size )”滑块以增加像素化效果。选择确定(OK)以应用它。
- 应用像素化效果后，您需要通过选择File > Save或Save As来保存图像。
在 Windows 或 Mac 上使用 GIMP 像素化图像(Using GIMP to Pixelate Images on Windows or Mac)
如果您想使用免费软件对图像进行像素化，您可以使用开源 GIMP(open source GIMP)来实现。这个免费的照片编辑器适用于Windows和Mac，以及Linux等其他平台。
- 首先，在您的 PC 或Mac上打开(Mac)GIMP并通过选择(GIMP)File > Open加载图像。
- 如果要对图像的一部分进行像素化，请先使用“选择(Select )”工具选择它。否则，GIMP将像素化整个图像。要开始像素化过程，请从菜单中选择滤镜( Pixelise )>模糊(Filters )>像素( Blur )化。
- 在像素化框中，通过更改(Pixelise )块权重(Block weight )和块权重(Block weight )值来增加或减少像素化效果。要应用效果，请选择OK。
- 应用效果后，通过选择File > Save或Save As来保存文件。
使用 Adobe Photoshop Express 在线像素化图像(Using Adobe Photoshop Express to Pixelate Images Online)
如果您想在不安装第三方应用程序的情况下快速像素化图像，您可以使用在线照片编辑器。存在各种网站，但最好的网站之一是使用Adobe Photoshop Express，它可以让您对整个图像进行像素化。
- 首先，通过选择上传文件(Upload file )选项将图像上传到Adobe Photoshop Express网站。
- 加载图像后，选择右侧的艺术效果(Art effects )，然后在右侧的艺术效果(Art effects )选项卡 中选择效果(Effects)类别。
- 选择像素化(Pixelate )效果以将其应用于图像并移动像素大小(Pixel size )滑块以增加或减少效果。选择应用(Apply )以应用更改。
- 应用效果后，通过选择顶部的“下载”选项下载图像。(Download )
在 Windows 和 Mac 上更好的照片编辑(Better Photo Editing on Windows and Mac)
现在您知道如何在Windows和Mac上对图像进行像素化，您可以将照片编辑提升到一个新的水平。例如，您可能希望使用 GIMP 等工具恢复旧照片(restore old photos)，或使用Inkscape或Adobe Illustrator创建高分辨率矢量图像(create high-resolution vector images)。
如果您的图片变得太大，请不要忘记缩小图片尺寸(reduce the image size)，尤其是在您考虑在线发布时。最好自己做，因为Instagram等在线服务会自动压缩图像，从而降低图像质量。请务必首先使用照片编辑应用程序(photo editing apps)使您的图像适合社交媒体。
How to Pixelate an Image on Windows and Mac
There are a number of reasons why you might want to pixelate part or all оf an image. If you’re touchіng up a familу photo tо post onlіne, you may want tо pixelate the faces of some of your family members. If you’re editing a scanned image, уoυ may want to pixelate ѕome personal data to protect yourself before posting it online.
There are several ways you can quickly pixelate an image on Windows and Mac using various free or paid photo editors, such as Photoshop and GIMP, or by using online services to edit your images. If you want to know how to pixelate an image, here’s what you’ll need to do.
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ΩHow to Pixelate Images Using Photos on Mac
The easiest way to pixelate images is to use the tools you already have at your disposal. If you’re a Mac user, this means using the built-in Photos app to pixelate your images quickly.
Photos is pre-installed on all Macs, so you don’t need to install anything extra to begin. You can launch Photos from the Applications folder in the Finder app or from the Launchpad via the Dock instead.
- To pixelate images using the Photos app, open your image in the app by selecting it from your Library tab. If it isn’t visible, select File > Import to import it.
- With the photo imported, double-click the image in the Imports tab to view it. Once the image is open, select the Edit option in the top-right to begin editing the image.
- The image editing options will appear on the right-hand side of the Photos app. While Photos doesn’t have a built-in pixelation tool, you can use the retouch tool to achieve a similar effect. Move the retouch slider to increase the effect, select the checkbox to activate it, then apply the effect using your mouse to the area you want to hide.
- You can preview the slider effect on the right. If you’re unhappy, select Revert to Original in the top menu bar, or select Done to save the changes.
While the retouch tool isn’t technically pixelating the image, it is distorting it, resulting in a similar effect. If you want to pixelate an image using block-style pixelation, however, you’ll need to try one of the methods listed below.
How to Pixelate Images Using Paint 3D on Windows
The Paint 3D tool is a replacement for Microsoft Paint, created by Microsoft to introduce new features (such as basic 3D modelling) that aren’t possible in the original software.
One useful feature of Paint 3D, however, is a quick pixelation tool for images. Paint 3D should be pre-installed on your Windows PC but, if it isn’t, you can download and install it from the Microsoft Store.
- To start, open the Paint 3D app on your PC and select Menu > Open > Browse Files to open your image.
- Once the file is open, use the Select tool to select the portion of the image you want to pixelate (or select the whole image to pixelate the entire image). Once selected, reduce the selected portion of the image in size—this will reduce the quality of the selected portion of the image.
- After reducing the size of the section, deselect it by clicking anywhere else on the image. You’ll now need to reselect and resize the reduced image section to its previous size using the Select tool, making sure not to add any white space doing so. Once resized, the image quality will be reduced in that section, creating a pixelation effect.
Using Adobe Photoshop to Pixelate Images on Windows or Mac
While Adobe Photoshop is one of the best and well known professional photo editors for Windows and Mac users, it can also handle pretty simple tasks like image pixelation.
- To pixelate an image in Photoshop, open the image by selecting File > Open.
- Using the Select tool, select the portion of your image that you want to pixelate. If you want to pixelate the entire image, proceed to the next step.
- With the portion of your image selected, select Filter > Pixelate > Mosaic to begin the pixelation process.
- In the Pixelate box, move the Cell Size slider to increase the pixelation effect. Select OK to apply it.
- Once the pixelation effect is applied, you’ll need to save the image by selecting File > Save or Save As.
Using GIMP to Pixelate Images on Windows or Mac
If you want to pixelate images using free software, you can use the open source GIMP to do it. This free photo editor is available for Windows and Mac, as well as other platforms like Linux.
- To start, open GIMP on your PC or Mac and load the image by selecting File > Open.
- If you want to pixelate a section of the image, use the Select tool to select this first. Otherwise, GIMP will pixelate the entire image. To begin the pixelation process, select Filters > Blur > Pixelise from the menu.
- In the Pixelise box, increase or decrease the pixelation effect by changing the Block weight and Block weight values. To apply the effect, select OK.
- Once the effect is applied, save the file by selecting File > Save or Save As.
Using Adobe Photoshop Express to Pixelate Images Online
If you want to pixelate images quickly without installing a third-party app, you can use an online photo editor. Various websites exist, but one of the best is to use Adobe Photoshop Express, which will allow you to pixelate an entire image.
- To start, upload an image to the Adobe Photoshop Express website by selecting the Upload file option.
- Once the image is loaded, select Art effects on the right, then select the Effects category in the Art effects tab on the right.
- Select the Pixelate effect to apply it to the image and move the Pixel size slider to increase or decrease the effect. Select Apply to apply the change.
- Once the effect is applied, download the image by selecting the Download option at the top.
Better Photo Editing on Windows and Mac
Now you know how to pixelate images on Windows and Mac, you can take your photo editing to the next level. For instance, you may want to restore old photos using tools like GIMP or create high-resolution vector images using Inkscape or Adobe Illustrator.
If your images become too large, don’t forget to reduce the image size, especially if you’re thinking about posting online. It’s better to do this yourself, as online services like Instagram will compress images automatically, reducing their quality. Be sure to use photo editing apps to make your images social media-friendly first.
