The fastest way to change your wallpaper depends on your operating system

On Windows, right-click any empty space on your desktop, select Personalize, then choose Background from the left menu. Pick a new image from the built-in collection, or click Browse to use a photo from your computer. On Mac, open System Settings, go to Wallpaper, and select a new image from the library or drag in your own photo. Both take about 30 seconds.

The process is straightforward on both systems, but the exact steps and menu names differ slightly depending on which version you're running. This guide walks you through each path so you can find the right one for your setup.

Key Takeaways

  • On Windows, right-click the desktop, choose Personalize, then Background to pick a new wallpaper from the library or your own files.
  • On Mac, open System Settings, select Wallpaper, and choose from the built-in collection or add a photo from your computer.
  • You can use any image file on your computer as wallpaper—JPG, PNG, and BMP files all work on both systems.
  • If your wallpaper doesn't appear after you select it, restart your computer or check that the image file isn't corrupted.

Changing wallpaper on Windows 10 and Windows 11

The steps are nearly identical on Windows 10 and 11. Right-click any blank area of your desktop—avoid clicking on icons or the taskbar. A menu will pop up. Look for the word Personalize near the bottom and click it.

The Settings window opens. On the left side, you'll see a menu. Click Background. Under "Personalize your background," you'll see a dropdown that says Picture, Solid color, or Slideshow. Make sure Picture is selected. Below that, Windows shows you thumbnail images you can choose from. Click any one to set it as your wallpaper when ready.

If you want to use your own photo, click the Browse button. A file window opens. Navigate to the folder where your image is stored, click the image, and select Choose this image. The wallpaper changes right away.

Changing wallpaper on Mac

On Mac, click the Apple menu in the top-left corner and select System Settings (or System Preferences on older versions). In the sidebar on the left, look for Wallpaper and click it. You'll see thumbnails of available wallpapers organized by category—Dynamic, Still, and Collections.

Click any image to preview it on your desktop. If you like it, the change happens automatically. To use a photo from your computer instead, click the + button at the bottom of the window, navigate to your photo, and click Open. The image becomes your new wallpaper.

If you have multiple displays, you can set different wallpapers on each one. Just click the display you want to change in the Wallpaper settings, then pick a new image.

Using your own photos as wallpaper

Both Windows and Mac work with common image formats: JPG, PNG, BMP, and GIF files all work fine. The image doesn't have to be a specific size—your computer will automatically fit it to your screen. If the image is smaller than your screen, Windows and Mac will stretch it slightly. If it's much larger, they'll shrink it down.

Before you set a photo as wallpaper, make sure it's stored somewhere you can find it easily. Many people keep wallpaper images in a dedicated folder on their desktop or in their Pictures folder. This makes it faster to locate the image when you browse for it in the Personalize or Wallpaper settings.

If you read wallpaper images from the internet, save them to your computer first. Right-click the image on a website and select Save image as (or Save picture as on Mac). Choose where you want to store it, then follow the steps above to set it as your wallpaper.

Troubleshooting when your wallpaper won't change

If you select a new wallpaper and it doesn't appear on your desktop, restart your computer first. Sometimes the display doesn't refresh until you log out and back in or restart. After restarting, check the Personalize or Wallpaper settings again to confirm your choice is still selected.

If the wallpaper still doesn't show, the image file might be corrupted or in a format your computer doesn't recognize. Try a different image to test. If that works, the original file is the problem. You can try opening the image in a photo viewer to confirm it displays correctly. If it doesn't open or looks broken, delete it and use a different photo.

On Windows, if you're using a work or school computer, your IT department may have locked the wallpaper settings. You'll see a message saying the setting is managed by your organization. In that case, you won't be able to change it without contacting your IT support team.

Setting a slideshow wallpaper on Windows

Instead of a single image, you can set Windows to rotate through multiple photos. In the Personalize menu, click Background and change the dropdown from Picture to Slideshow. Click Browse and select a folder that contains several images. Windows will cycle through them automatically.

You can control how fast the slideshow changes. Look for the Change picture every dropdown and pick an interval—1 minute, 10 minutes, 1 hour, or 1 day. You can also choose whether the slideshow shuffles the images randomly or plays them in order. Mac doesn't have a built-in slideshow feature in the same way, but some third-party apps offer this if you want it.

Where to find free wallpaper images

If you want new wallpaper but don't have photos of your own, several websites offer free images. Unsplash, Pexels, and Pixabay all have large collections of high-quality photos you can read at no cost. Search for a topic you like—nature, cities, abstract patterns—and read the image to your computer. Then follow the steps above to set it as your wallpaper.

Windows and Mac also come with built-in wallpaper collections. Windows includes images in categories like Landscapes, People, and Abstract. Mac offers Dynamic wallpapers that change throughout the day, plus Still images and curated collections. These are all free and don't require downloading anything.

Frequently Asked Questions

Can I set different wallpapers on different monitors?

On Windows 11, yes. Right-click the desktop, select Personalize, then Background. You'll see options to choose different images for each display. On Windows 10, this feature is more limited. On Mac, you can set different wallpapers for each display in the Wallpaper settings by clicking the display thumbnail first.

What image size works best for wallpaper?

Your computer will resize any image to fit your screen, so size doesn't matter much. However, images that match your screen resolution (like 1920x1080 for a common monitor) will look sharpest without stretching. If you're unsure of your resolution, right-click the desktop on Windows and select Display settings to see it listed.

Why does my wallpaper keep changing back to the default?

This usually happens if the image file was deleted or moved after you set it as wallpaper. Your computer can't find the file, so it reverts to the default. Make sure the image stays in the same folder. If you move or delete it, the wallpaper will reset. Keep important wallpaper images in a permanent folder.

Can I use an animated GIF as wallpaper?

Windows and Mac both support GIF files, but they won't animate as wallpaper—they'll display as a still image. If you want moving wallpaper on Windows, use the Slideshow feature instead. Some third-party apps on Mac offer animated wallpaper, but the built-in system doesn't.

How do I get back to the original wallpaper?

On Windows, go back to Personalize > Background and select one of the default images shown at the top. On Mac, open Wallpaper settings and choose one of the built-in options from the library. Both systems keep the original wallpapers available, so you can always switch back.