Paint 3D is a free image editing tool by Microsoft that allows users to resize images. The maximum pixel height for an image in Paint 3D is not explicitly stated, however, it is suggested that the image may become pixelated if the resolution is increased beyond a certain point. Users can choose to resize images in pixels or percentages, and the Lock Aspect Ratio feature ensures that the image is not distorted when resizing.
| Characteristics | Values |
|---|---|
| Maximum pixel height | Not mentioned |
| Maximum pixel width | 100 |
| Image format | JPEG |
| File format | PNG |
| Image compression tools | Available |
| Lock aspect ratio | Available |
| Crop | Available |
| Zoom | Up to 800% |
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What You'll Learn

Image resizing in Paint 3D
Resizing images in Paint 3D is a straightforward process that allows you to tailor photos to your specific requirements. This capability is especially useful for creative projects, social media sharing, or simply adjusting image dimensions.
To resize an image in Paint 3D, first, open the image in the Paint 3D app. You can do this by opening the Paint 3D app on your PC and then opening the desired image within the app. Alternatively, you can use the taskbar search box to open the Paint 3D app and then open the image.
Once your image is open in Paint 3D, you can access the Canvas menu by clicking on it or using the keyboard shortcut Ctrl+W. In the Canvas menu, ensure that the "Resize image with canvas" option is checked to avoid cropping when resizing.
Now, you can specify your desired image dimensions. You can choose to modify either the width or height, as the "Lock aspect ratio" option will automatically adjust the other dimension to maintain the correct proportions. You can enter your desired dimensions in pixels or as a percentage of the original size.
After entering your desired dimensions, you will see the image's size change accordingly. If you are satisfied with the resized image, you can save it by clicking the "Menu" button and selecting "Save," or by using the keyboard shortcut Ctrl+S. You can also save a copy of the file by using the "File > Save as" option.
It is important to note that increasing the size of a low-resolution image may result in poor image quality or pixelation. Additionally, if you are resizing an image for a specific purpose, such as an email signature or a profile picture, ensure that you adhere to the required dimensions to avoid any issues.
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Lock aspect ratio
When resizing an image in Paint 3D, the "Lock aspect ratio" feature ensures that the image is logically resized without distortion or stretching. This feature is particularly useful when you need to edit one dimension (width or height) of the canvas while maintaining the overall proportions of the image.
By checking the "Lock Aspect Ratio" option, you can ensure that the width of the image automatically adjusts when you change the height, and vice versa. This feature is designed to keep the image from becoming distorted or stretched, which is a common issue when resizing images.
To use the "Lock aspect ratio" feature in Paint 3D, first open the image you want to resize. Then, select the Canvas tab to access the Resize and skew menu. Here, you can choose to increase the resolution by pixels or percentage. If you want to maintain the aspect ratio, make sure to check the "Lock Aspect Ratio" option before entering your desired dimensions.
It's important to note that increasing the size of a low-resolution image may result in poor image quality or pixelation. Therefore, it's recommended to check the "Resize image with canvas" option in addition to "Lock aspect ratio" to ensure proper resizing. By following these steps, you can effectively resize your images in Paint 3D while maintaining the correct aspect ratio and proportions.
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Resize image with canvas
Paint 3D is a free photo editing tool by Microsoft that can be used to change the file size and resolution of an image. The maximum pixel height of an image in Paint 3D depends on the image's resolution.
Step 1: Open the Image in Paint 3D
Open the Paint 3D app on your computer and import the image you want to resize by clicking on the "Menu" button and selecting "Open".
Step 2: Switch to the Canvas Tab
Once your image is open in the Paint 3D app, switch to the "Canvas" tab. This is where you will find the settings to adjust the image size and resolution.
Step 3: Select the Resize and Skew Option
In the "Canvas" tab, look for the Resize and Skew menu. This menu will allow you to adjust the image's height and width, as well as change the resolution.
Step 4: Choose the Measurement Unit
You can choose to change the dimensions of your image by percentage or pixel. If you want to input specific dimensions, select "pixels" from the drop-down menu.
Step 5: Enter the Desired Dimensions
In the Resize and Skew box, enter the desired height and width for your image. Paint 3D will automatically maintain the aspect ratio, so you only need to enter the value for one dimension, and the other will adjust accordingly.
Step 6: Save Your Changes
Once you have entered the desired dimensions, click OK to set the new resolution. Finally, use the Ctrl+S hotkey to save the changes to your image.
It is important to note that increasing the size of a low-resolution image may result in poor image quality or pixelation. Additionally, you cannot make the canvas smaller than the image itself; you can only expand the canvas size.
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Change resolution
You can change the file size and resolution using Paint and Paint 3D in Windows 11/10. To change the resolution of an image in Paint 3D, follow these steps:
- Open the Paint 3D app on your PC and open the image you want to edit.
- Switch to the Canvas tab.
- From the drop-down menu, choose whether you want to change the dimension by percentage or pixel.
- Select your desired resolution by entering the new height and width.
- Click the OK button to set the resolution.
- Press Ctrl+S to save the file.
If you want to save a copy of the file, use the File > Save as option. Note that if you are increasing the resolution of an image with low resolution, the image quality may suffer and become pixelated.
To optimise an image for use online, you can also crop the image before resizing. To do this, cut the photo to your desired proportions and rescale the image using the steps above.
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Alternative programs
While Paint 3D is a great tool for artists and casual users, there are several alternative programs with unique features and benefits. Here are some of the most popular alternatives:
SketchUp
SketchUp is a popular web-based, Windows, and Mac alternative to Paint 3D. It is a design program with a simple interface and no subscription plan. It is a paid software package, so if you're looking for a free alternative, you might want to consider other options.
MyPaint
MyPaint is a fast, distraction-free, and easy-to-use painting tool for digital artists. It is the most popular open-source and free Linux alternative to Paint 3D. MyPaint supports graphics tablets, such as those made by Wacom, and many similar devices.
ZBrush
ZBrush is a comprehensive 3D texturing and sculpting tool offering advanced features and versatility. It is ideal for artists, designers, and professionals in film, gaming, and more. ZBrush is a paid software package, but its lightweight nature makes it a popular alternative to Paint 3D.
Piktochart
Piktochart is an AI-powered design tool that enables users to create stunning infographics, presentations, and other visual content quickly and easily. It offers a wide range of templates and design elements, making it suitable for educators, marketers, business professionals, and anyone looking to create visuals without prior design experience.
Blender
For game development and 3D modelling, Blender is a stable and popular tool for creating 3D models and assets.
These alternatives to Paint 3D offer a range of features and capabilities, catering to different user needs and preferences. Whether you're looking for a free option, advanced 3D modelling tools, or AI-powered design capabilities, these alternatives provide a variety of options to explore beyond Paint 3D.
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Frequently asked questions
There is no fixed maximum pixel height on Paint 3D. You can resize your image to any height in pixels. However, note that if an image is of low resolution (or height and width), increasing its size may result in bad image quality or make the image pixelated.
To change the pixel height of an image in Paint 3D, first open the image in the Paint 3D app. Then, select the "Resize and skew" option in the image menu. You can then change the resolution by increasing or decreasing the height dimension by pixels. Finally, click the "OK" button to set the resolution and use the Ctrl+S hotkey to save the file.
To ensure that your image is not distorted when resizing it, check the "Lock aspect ratio" option. This will automatically adjust the width of the image when you change the height, and vice versa, maintaining the proportions of the image.















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