How to Resize an Image in Paint 3D

How to resize an image in Paint 3D

1. 1Open the image at its original size

   

   Choose Menu > Open > Browse files and select your image. Opening it as a separate document gives you a canvas that matches the picture. If you insert it into an existing project, the project’s canvas can have different dimensions from the inserted picture. Save or close other work first and give the resized copy a different name later.

2. 2Enable both resize checkboxes

   

   Select Canvas from the top toolbar. In Resize canvas, choose Pixels if the destination gives you a pixel limit. Check Lock aspect ratio and Resize image with canvas. The first keeps the width and height in proportion. The second scales the image when you change the canvas dimensions. If you are only adding space around a picture for a layout, leave the second setting off.

3. 3Enter the size and check the result

   

   Type the required value into Width or Height, then confirm the field. Leave the matching dimension to Paint 3D. For example, an image that starts at 1,920 by 1,080 pixels should end up around 1,280 by 720 when you enter a height of 720. Minor rounding can occur. If the picture looks distorted, undo the change and check that the aspect ratio was locked before trying again.

4. 4Export the resized copy

   

   Choose Menu > Save as > Image. Pick JPEG for a regular photo or PNG if you need transparency. Check the export dimensions before you save. Keep the filename distinct so the full-size version remains available. After saving, you can open the exported file’s Properties > Details in Windows to confirm the pixel width and height.

When the final size must be exact

If you need a 600-by-600 square from a wide photo, crop it to a square first, then resize to 600 pixels with the aspect ratio locked. That keeps faces and round objects from being squeezed. If every part of the wide photo must remain visible, place the photo inside a square canvas instead and keep the space above and below it. Choose a plain or transparent border based on where the finished picture will appear.

Frequently asked questions

Why did the border change but the photo stayed the same size?

The canvas can change independently of the image. Check Resize image with canvas before changing the numbers. If you meant to resize only one object inside a larger scene, select that object and use its handles instead. Confirm the overall output dimensions in the export preview.

Will enlarging the image add detail?

Increasing the pixel count makes the file larger in dimensions, but it cannot recover texture that the original capture did not contain. Start from a larger original if you need sharp text or fine detail. Keep that version so you can produce other sizes without repeatedly resizing the same copy.