Changing your wallpaper takes two to five minutes and works the same way on most computers

Your wallpaper is the background image that appears on your desktop — the screen you see when you close all your open windows. You can change it to any image stored on your computer, or use one of the built-in options that came with your operating system. The steps are slightly different depending on whether you use Windows or Mac, but both processes are straightforward and don't require any technical knowledge.

The most common reason people change their wallpaper is simply because they want a different look. Some people rotate their wallpaper seasonally, use family photos, or pick images that match their mood. Whatever your reason, the process is the same: you tell your computer which image to display, and it does.

Key Takeaways

  • On Windows, right-click your desktop, select "Personalize," then choose "Background" to pick a new wallpaper from built-in options or your own files.
  • On Mac, go to System Settings, click "Wallpaper," and select from Apple's collection or your own photos stored in the Photos app.
  • You can use any image file on your computer as wallpaper — JPG, PNG, and other common image formats all work.
  • If your image looks stretched or blurry, try adjusting the "fit" or "scale" setting to "fit," "fill," or "center" depending on your image size.

How to change wallpaper on Windows 10 or Windows 11

Start by right-clicking anywhere on your desktop — the empty space where no windows are open. A menu will appear with several options. Look for and click "Personalize." This opens the Settings app to the personalization section.

Once Personalize opens, look at the left side menu and click "Background." You'll see a dropdown menu that says "Personalize your background" with options like "Picture," "Solid color," or "Slideshow." Select "Picture" if you want a single image, or "Slideshow" if you want Windows to rotate through multiple images automatically.

If you choose "Picture," scroll down and you'll see a row of thumbnail images — these are the built-in wallpapers that came with Windows. Click any one to preview it on your desktop. If you want to use your own image instead, click the button that says "Browse" and navigate to the folder where your image is saved. Select the image and click "Choose picture." Your new wallpaper appears immediately.

If the image looks stretched, blurry, or doesn't fill the screen properly, scroll down to find the "Choose a fit" dropdown. Try "Fill" to make the image cover the whole screen, "Fit" to show the whole image without stretching, or "Center" to place it in the middle. Each option looks different depending on your image's size and shape.

How to change wallpaper on Mac

On Mac, click the Apple menu in the top-left corner and select "System Settings" (or "System Preferences" on older Macs). In the sidebar on the left, look for and click "Wallpaper." This opens the wallpaper selection screen.

You'll see several categories of built-in wallpapers — "Collections," "Recent," and others depending on your Mac model. Click any category to see the images inside it, then click an image to preview it. Your wallpaper changes as soon as you click it. If you have multiple displays connected to your Mac, you can set different wallpapers for each one by clicking the display name at the top.

To use your own photo as wallpaper, look for a button or option that says "Add" or "+" near the bottom of the window. Click it and navigate to your Photos app or to a folder where your images are stored. Select the image you want and confirm. Your photo becomes the new wallpaper.

If your image doesn't look right — too stretched, too small, or off-center — look for a dropdown menu labeled "Scale" or "Fit." Try different options until the image looks the way you want it to.

Using your own photos as wallpaper

Any image file on your computer can become wallpaper. Common image types that work include JPG, PNG, BMP, and GIF. If you have photos from your phone, camera, or downloaded from the internet, they'll work just fine.

Before you set an image as wallpaper, think about its size. Images that are very small (less than 1000 pixels wide) may look blurry or pixelated when stretched across your entire screen. Images that are very large may take longer to load. Most modern photos from phones or cameras are the right size and won't cause problems.

If you're using a photo from the internet, make sure you have permission to use it. Many images online are copyrighted, and using them as your personal wallpaper is usually fine, but it's good practice to check. For your own photos, there are no restrictions — use them however you like.

Troubleshooting common wallpaper problems

If your wallpaper looks stretched or distorted, the image size doesn't match your screen size. Try changing the "fit" or "scale" setting. "Fill" stretches the image to cover the whole screen but may cut off the edges. "Fit" shows the whole image but may leave colored bars on the sides. "Center" places the image in the middle without stretching. Pick whichever looks best to you.

If you set a wallpaper and it doesn't appear, restart your computer. Sometimes the change doesn't take effect until you do. If the wallpaper still doesn't show, make sure the image file isn't corrupted by trying to open it in a photo viewer first. If it opens fine there, try selecting it again as your wallpaper.

If you want to go back to the default wallpaper that came with your computer, open the wallpaper settings again and select one of the built-in options. You can always change it back to your custom image later.

Setting a slideshow wallpaper that changes automatically

Both Windows and Mac let you create a slideshow that rotates through multiple images automatically. On Windows, open Personalize, click Background, and select "Slideshow" from the dropdown. Then click "Browse" and select a folder that contains several images. Windows will cycle through them at an interval you can set — anywhere from 1 minute to 1 day.

On Mac, open System Settings, click Wallpaper, and look for an option to select multiple images or a folder. Click "Add" and choose a folder full of photos. Mac will rotate through them automatically. You can usually set how often the image changes in the same menu.

Slideshow wallpapers are useful if you have a collection of photos you want to see regularly, or if you like variety without having to manually change your wallpaper. The rotation happens in the background and doesn't slow down your computer.

Frequently Asked Questions

Can I use a video as my wallpaper instead of a still image?

Windows 11 supports video wallpapers through the Microsoft Store, though they require more processing power than still images. Mac does not natively support video wallpapers. If you want animated wallpapers on Mac, you'll need third-party software. For most users, a slideshow of images is a simpler alternative that works on both systems.

What if I can't find the Personalize option on Windows?

Right-click on your desktop and look for "Personalize" or "Customize." If that doesn't appear, try right-clicking on the taskbar at the bottom instead, or open Settings directly by pressing Windows key + I, then search for "Background" in the search box at the top.

Will changing my wallpaper affect my files or programs?

No. Your wallpaper is purely visual and has no connection to your files, programs, or system settings. Changing it is completely safe and won't alter anything else on your computer.

Can I set different wallpapers for different user accounts?

Yes. Each user account on your computer has its own wallpaper setting. When you log in as a different user, their wallpaper appears. Change the wallpaper through Personalize or System Settings while logged in as that user, and it will only affect that account.

What's the best image size for wallpaper?

Your screen's native resolution is ideal — for example, 1920 x 1080 for a standard monitor or 2560 x 1600 for a larger display. Most modern photos from phones or cameras are large enough. If you're unsure, use an image that's at least 1920 pixels wide, and adjust the fit setting if it doesn't look right.