The fastest way to change your background

On Windows, right-click any empty space on your desktop, select Personalize, then click Background in the left menu. Choose Picture from the dropdown, then click Browse to pick a photo from your computer. On Mac, open System Settings, click Wallpaper in the sidebar, select a category on the left, and click any image to set it when ready.

Both systems let you use photos you've taken yourself or choose from built-in collections. The whole process takes under a minute once you know where to look. If you want to use a photo that's not on your computer yet, you'll need to save it first — we'll cover that below.

Key Takeaways

  • Windows users right-click the desktop and select Personalize, then Background, then Picture to browse for an image file.
  • Mac users open System Settings, click Wallpaper, and click any image in the built-in collections to explore it when ready.
  • Both systems let you use your own photos by browsing to the folder where they're stored on your computer.
  • If your image looks stretched or cut off, check the fit options — Windows calls this "Choose a fit" and Mac calls it "Fill screen" or similar.
  • You can set different backgrounds for multiple monitors on both systems, though the steps differ slightly.

Changing your background on Windows 10 and 11

Start by right-clicking any blank area of your desktop — avoid clicking on icons or the taskbar. A menu will appear. Look for Personalize near the bottom and click it. This opens the Settings app to the Personalization section.

On the left side, click Background. You'll see a dropdown menu that currently says either Picture, Solid color, or Slideshow. Click the dropdown and select Picture. Below that, you'll see a row of thumbnail images — these are Windows' built-in backgrounds. Click any one to set it when ready.

To use your own photo, click the Browse button. A file window opens showing your Pictures folder by default. Navigate to wherever your image is stored — it might be in Downloads, Documents, or a custom folder. Click the image once to select it, then click Choose picture. The image appears on your desktop right away.

If the image looks stretched, squeezed, or cut off, scroll down in the same window to find Choose a fit. Your options are Fill (stretches to cover the whole screen), Fit (shrinks to fit without cutting), Stretch (distorts to fill), Tile (repeats the image), and Center (places it in the middle). Most people prefer Fill or Fit.

Changing your background on Mac

Click the Apple menu in the top-left corner and select System Settings. In the sidebar on the left, scroll down and click Wallpaper. The main window shows categories of built-in images — Collections, Dynamic, Light, Dark, and others depending on your macOS version.

Click any category to see the images inside. When you find one you like, click it once and it becomes your background when ready — no confirmation step needed. If you want to use a photo from your computer, look for an option like Add or a folder icon, usually at the bottom of the window. Click it, navigate to your photo, and select it.

On newer Macs, you can also right-click your desktop, select Change Desktop Background, and follow the same steps. The result is identical either way. If your image appears zoomed in or cut off, look for a Fill screen or Scale option in the same window and adjust it.

Using your own photos as a background

Your own photos work best when they're already saved on your computer. If you've taken photos with your phone or camera, connect the device or use cloud storage like OneDrive, Google Drive, or iCloud to move them to your computer first. Once they're in a folder you can find — like Pictures or Downloads — you can browse to them using the steps above.

Image files that work as backgrounds include JPG, PNG, BMP, and GIF formats. Most photos from phones and cameras are already in JPG format, so you won't need to convert anything. If you read an image from the internet, right-click it and select Save image as, then choose where to save it on your computer.

For the best appearance, use an image that matches your screen's width-to-height ratio. Most modern monitors are wider than they are tall (called landscape orientation). A photo taken in portrait mode (taller than wide) will either have empty space on the sides or get cropped. Check your monitor's resolution in Display Settings (Windows) or System Settings (Mac) if you're unsure.

Setting different backgrounds on multiple monitors

If you have two or more monitors connected, Windows lets you set a different background on each one. Right-click the desktop and select Personalize, then Background. Instead of clicking a single image, right-click the image you want and select which monitor to explore it to — the menu will show options like Set for monitor 1 and Set for monitor 2. Repeat for each monitor.

On Mac, the process is simpler but less flexible. Open System Settings, click Wallpaper, and select an image. It applies to all connected displays at once. You cannot set different backgrounds per monitor on Mac without using third-party software.

Fixing common background problems

If your background image looks stretched or distorted, the fit setting is wrong. On Windows, go to Personalize > Background and adjust Choose a fit to Fit instead of Fill. On Mac, look for a scale or fit option in the Wallpaper settings. Fit shrinks the image to show it all without cutting anything off, while Fill stretches it to cover the whole screen.

If the background won't change at all, make sure you're right-clicking on empty desktop space, not on a folder or icon. Also check that the image file isn't corrupted — try a different image first to see if the problem is the file or the process. On Mac, if changes don't appear, try logging out and back in.

If your background keeps reverting to the default, a screensaver or power-saving setting might be overriding it. On Windows, go to Settings > System > Power & sleep and make sure screensaver is set to None. On Mac, open System Settings > Lock Screen and check that a screensaver isn't scheduled.

Using slideshow backgrounds

Both Windows and Mac let you set a folder of images to rotate as your background. On Windows, right-click the desktop, select Personalize, then Background. Change the dropdown from Picture to Slideshow. Click Browse and select a folder containing multiple images. Use the dropdown below to choose how often the image changes — options range from every 1 minute to every 1 day.

On Mac, open System Settings > Wallpaper, then look for a Dynamic category or similar. These built-in collections change throughout the day automatically. To use your own folder of images, click Add, select a folder, and the system will rotate through those images.

Frequently Asked Questions

Can I use a video as my background?

Windows 11 supports video backgrounds, but the feature is limited. You need to use the built-in video wallpapers from the Microsoft Store — you cannot use your own video files. Mac does not support video backgrounds natively. Third-party software exists for both systems, but it uses more battery power and processing speed than a static image.

What image size works best for a background?

Match your monitor's resolution for the sharpest appearance. Common resolutions are 1920×1080 (Full HD), 2560×1440 (2K), and 3840×2160 (4K). If your image is smaller, it may look blurry when stretched. If it's larger, the system will shrink it automatically. Most photos from modern phones are large enough for any monitor.

Why does my background look pixelated or blurry?

The image is too small for your screen resolution. Use a larger image, or check that the fit setting is not set to Stretch on Windows. On Mac, make sure the scale option is not zoomed in. If the image is genuinely too small, consider using a different photo or finding a higher-resolution version online.

Can I set a background without using Settings?

On Windows, right-clicking the desktop is the fastest method and does not require opening Settings. On Mac, you can also right-click the desktop and select Change Desktop Background directly. Both methods skip the Settings app entirely and open the background chooser when ready.

Will changing my background affect my computer's speed?

No. A static background image uses negligible system resources. Slideshow backgrounds use slightly more power because the system reads new images from storage periodically, but the impact is minimal on modern computers. Video backgrounds use noticeably more battery and processing power, so avoid them on laptops if you want longer battery life.