How to resize an image in Paint 3D: Guide 2026

Do you want to upload images to any website or social media platform, such as Facebook, Twitter, LinkedIn, Reddit, and many more? Are you concerned about resizing an image to upload to these platforms? Don’t worry anymore! Paint 3D is the best assistance for all your problems.

Most social media websites need special formats to upload images. Therefore, you need to resize these images and then upload them. If you are thinking, “How to resize an image in Paint 3D,” then you are in the right place. In this guide, we will give you the simple steps that make your image resizing process simple.

resize an image in Paint 3D

How to resize an image in Paint 3D?

There are many tools like ResizingImg, Toolspy Image Resizer, PicsSizer, and many more available on the internet. When you resize the images with these tools, the quality of the images will change. Therefore, it is not suitable to resize an image without losing the quality.

Paint 3D is the perfect tool to resize the images. If you want to resize unlimited images, then there is no other option than Paint 3D. Paint 3D, Microsoft’s online tool, is also free to use, and no internet connection is needed. Apart from this, you can our guide Why Paint 3D Is Not Working.

How to resize an image in Paint 3D, The steps below are helpful for you.

  • First, click on the Window button.
  • Select and open the image you want to edit.
  • Now, click on the Canvas at the top.
  • Also, check both resizing the image with the canvas and locking the aspect ratio.
  • Now, switch the dropdown from “Percentage” to “Pixels.”
  • Also, type the new dimension you need, 800 pixels wide.
  • Finally, save all the settings or press (Ctrl + S).

Resize Image: Pixels vs Percentage (Which One Is Best)

When you resize an image in Paint 3D, there are two options Pixels or Percentage. We have also discussed the details about both options that help you to easily decide which one is suitable for you.

Percentage

  • It changes the images by a part of its current size.
  • By typing 50, the image becomes half.
  • If you double the image size, then type 200.

Pixels Option

  • It is helpful to decide how much the image should be wide and tall.
  • For example, for Instagram, exactly 1080 × 1080 pixels are used.
  • For YouTube, 1280 × 720 pixels are also needed.

The above key points help you to decide which option is more suitable for you.

How to Resize an Image in Paint 3D and Keep Aspect Ratio Locked

Aspect ratio refers to the shape of your image. It deals with the height and width of an object. If the aspect ratio isn’t preserved, resizing can affect the image’s original shape. If you want to fix this error, you need to check the lock aspect ratio option in the Canvas sidebar. However, Paint 3D adjusts the dimension automatically.

The key points help you to understand it in a better way.

  • Original image: 3000 × 2000 pixels (3:2 aspect ratio)
  • After resizing: Enter 1200 for the width → the height automatically updates to 800, keeping the proportions intact.

Resize an Image in Paint 3D the Fast Way (Keyboard Shortcuts)

Did you want to resize the images in Paint 3D quickly? If yes, then keyboard shortcuts are the best option for you.

ShortcutWhat It Does
Alt + COpens Canvas settings (where all the resize magic happens)
MToggles the sidebar on/off
Ctrl + SSaves your image instantly
Ctrl + ZUndo your last change (lifesaver if you mess up dimensions)
Ctrl + Shift + S“Save As” (saves a new copy without overwriting the original)

Here is the process how to resize images in Paint 3D

  • Right-click on the image and choose Edit with Paint 3D.
  • Press Alt + C (opens Canvas)
  • Check both boxes (Resize and Lock aspect ratio).
  • Now, type the dimension as well.
  • Finally, press Ctrl + S to save the changes.

How to Resize Images in Paint 3D for Web, Social Media, and Print

Because every platform uses different image sizes, choosing the right dimensions is important. The table below shows the recommended image sizes for each platform.

PlatformImage TypeDimensions (Pixels)
InstagramSquare post1080 × 1080
InstagramStory1080 × 1920
FacebookCover photo820 × 312
FacebookShared image1200 × 630
Twitter/XHeader1500 × 500
Twitter/XPost image1200 × 675
LinkedInPost image1200 × 627
YouTubeThumbnail1280 × 720

For Web Images

The key points below help you to use the image size for a blog post without affecting the website speed.

  • Blog posts: 800–1200px wide
  • Headers: 1920 × 1080px
  • Thumbnails: 300–400px wide
  • Email images: Max 600px wide

For Printing

For printing, use 300 DPI for sharp results. Low-resolution images will appear blurry, and Paint 3D can’t improve their quality—you’ll need the original high-resolution image.

Print SizeDimensions at 300 DPI
4×6 inches1200 × 1800 pixels
5×7 inches1500 × 2100 pixels
8×10 inches2400 × 3000 pixels

Conclusion: How to resize an image in Paint 3D

In this guide, we have discussed how to resize an image in Paint 3D. Based on my expertise, I have given you the full details about resizing the images. After reading this guide, you will be able to resize the images quickly. So, resize the images and upload them to social media like Facebook, Twitter, LinkedIn, and many more.

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