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

On Windows 10 and 11, right-click any empty space on your desktop, select Personalize, then click Background in the left menu. Choose Picture from the dropdown, then select an image from your computer or use one of the built-in options. On Mac, open System Preferences (or System Settings on newer versions), click Desktop & Screen Saver, then select a folder or image from the left panel.

Both systems let you use photos you already own, images downloaded from the internet, or the default pictures that came with your computer. The process takes under a minute once you know where to look.

Key Takeaways

  • Windows users right-click the desktop, select Personalize, then Background to pick a new image.
  • Mac users open System Preferences or System Settings, then choose Desktop & Screen Saver to change the background.
  • You can use your own photos, downloaded images, or built-in pictures that came with your computer.
  • Image files should be in common formats like JPG, PNG, or BMP for best results.
  • Some computers let you set the background to change automatically at set intervals or shuffle through multiple images.

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 with several options. Look for Personalize near the bottom and click it. A settings window will open.

In the left sidebar, click Background. You will see a dropdown menu that currently shows Picture, Solid color, or Slideshow. If Picture is not already selected, click the dropdown and choose it. Below that, you will see a row of thumbnail images—these are Windows' built-in backgrounds. Click any one to use it when ready.

To use your own photo instead, click the Browse button. A file browser will open. Navigate to the folder where your image is stored (usually Pictures or Downloads), select the image, and click Open. Your desktop background will change right away. You do not need to save or restart your computer.

Changing your background on Mac

Click the Apple menu in the top-left corner and select System Preferences (on older Macs) or System Settings (on newer ones). In the search bar at the top, type "Desktop" and click the Desktop & Screen Saver result that appears.

On the left side, you will see folders of images: Desktop Pictures, Nature, Solid Colors, and others depending on your Mac model. Click any folder to see the images inside. Click an image once to preview it, and it becomes your background when ready. There is no separate save step.

To use a photo from your own files, click the folder icon at the bottom of the left panel, navigate to where your image is stored, and select it. Mac will set it as your background right away.

Using your own photos as a background

Any photo on your computer can become your background. Common image formats that work are JPG, PNG, BMP, and GIF. If you have a photo in a different format (like TIFF or RAW), you may need to convert it first using free tools online or built-in software like Windows Photos or Mac Preview.

Before you set a photo as your background, think about its size. Images that are very small (smaller than your screen resolution) may look blurry or stretched. Most modern photos from phones or cameras are large enough. If you are unsure, try it—you can always change it back in seconds.

Photos stored in cloud services like OneDrive (Windows) or iCloud (Mac) work as backgrounds, but the image must be downloaded to your computer first. If you read an image from the internet, save it to your Pictures or Downloads folder before setting it as your background.

Setting a slideshow background that changes automatically

On Windows, in the Personalize menu, change the dropdown from Picture to Slideshow. Click Browse and select a folder full of images. Windows will cycle through them automatically. You can set how often it changes (every 1 minute, 10 minutes, 1 hour, or 1 day) using the dropdown below.

On Mac, in Desktop & Screen Saver settings, select a folder of images on the left. Check the box next to Change picture and choose how often you want it to switch—every 5 seconds, 1 minute, 5 minutes, 15 minutes, 30 minutes, 1 hour, or when you wake the Mac from sleep.

Slideshow mode is useful if you have a folder of vacation photos or artwork you want to rotate through. It does not slow down your computer or use extra power.

Troubleshooting common background problems

If your new background does not appear after you select it, try closing the settings window and waiting a few seconds. Sometimes the desktop needs a moment to refresh. If it still does not show, restart your computer.

If you cannot find the Personalize option on Windows, make sure you right-clicked on the desktop itself, not on a folder or file. If the image you want to use does not appear in the file browser, check that it is saved in a location your computer can access (not an external drive that is disconnected, for example).

On Mac, if the Desktop & Screen Saver option does not appear in System Preferences, try typing "Desktop" in the search bar instead of looking for it manually. If an image looks stretched or distorted, it may be a very different size than your screen—try a different image to see if the problem goes away.

Frequently Asked Questions

Can I use a video or animated GIF as my desktop background?

Windows and Mac both support static images only as desktop backgrounds. Animated GIFs and videos will not play. Some third-party software exists for this, but it uses more power and can slow your computer. For most users, a slideshow of images is a better choice.

What screen resolution should my background image be?

Your image should match your monitor's resolution or be larger. Common resolutions are 1920×1080 (Full HD), 2560×1440 (2K), or 3840×2160 (4K). If your image is smaller, it may look blurry or stretched. Most photos from modern phones or cameras are large enough to work well.

Will changing my background slow down my computer?

No. A static background uses almost no power or processing. A slideshow uses slightly more, but the difference is not noticeable on modern computers. You can safely change your background as often as you want without affecting performance.

How do I get back to the original Windows or Mac background?

On Windows, open Personalize and select one of the built-in backgrounds shown in the thumbnail row. On Mac, open Desktop & Screen Saver and click Desktop Pictures or another built-in folder. Both systems keep their original backgrounds available at all times.

Can I set a different background for each monitor if I have multiple screens?

On Windows 11, yes—right-click the desktop, select Personalize, then Background, and you can choose different images for each monitor. On Windows 10, you can only set one background for all monitors at once. On Mac, each monitor can have its own background through the Desktop & Screen Saver settings.