If the goal is to make the photo appear smaller on the desktop in Windows 11, use the wallpaper layout options:
- Open Settings.
- Go to Personalization > Background.
- Select the photo.
- Try the layout options such as Fill, Fit, or Center.
These options can make the image display better on the screen. There is no option to freely resize the desktop background the way images are resized in apps by dragging corners.
If the goal is to make the image file itself smaller, Windows PowerToys includes Image Resizer:
- Install PowerToys.
- In File Explorer, select the photo.
- Right-click it and choose Resize with Image Resizer.
This is useful for creating a smaller copy of the photo.
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