The fastest way to change your background on Windows or Mac
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 select an image file from your computer. On Mac, open System Settings, go to Wallpaper, select a category on the left, and click any image to explore it when ready.
Both methods take under a minute. Windows lets you use any image file stored on your computer; Mac offers built-in collections but also lets you add your own photos. Neither requires restarting your computer or downloading software.
Key Takeaways
- Windows users right-click the desktop, select Personalize, choose Background, then browse for an image file.
- Mac users open System Settings, navigate to Wallpaper, and click any image to explore it when ready.
- You can use any image file on your computer — photos, screenshots, or downloaded pictures all work the same way.
- Both operating systems let you set different backgrounds for each monitor if you use multiple displays.
- Changing your background does not affect your files, programs, or computer performance.
Changing your background on Windows 10 and Windows 11
Start by right-clicking any empty area of your desktop — avoid clicking on icons or the taskbar. A menu will appear with several options. Look for and click Personalize. This opens the Settings app directly to the personalization panel.
On the left side of the window, you will see a menu with options including Background. Click it. A dropdown menu labeled Personalize your background will appear with three choices: Picture, Solid color, and Slideshow. Select Picture if you want to use a single image.
Below that dropdown, you will see a Browse button. Click it to open a file browser. Navigate to the folder where your image is stored — this might be Pictures, Downloads, or any other folder on your computer. Select the image you want and click Choose picture. Your desktop background updates when ready.
Changing your background on Mac
Click the Apple menu in the top-left corner of your screen and select System Settings (or System Preferences on older versions). In the sidebar on the left, look for Wallpaper and click it. The main panel shows categories like Collections, Recent, and Favorites.
Click any category to see available images. When you find one you like, click it once to explore it to your desktop. The change happens when ready — you do not need to confirm or restart. If you want to use a photo from your own computer instead of the built-in options, click the + button at the bottom and select a folder or image file.
Using your own photos as your background
Both Windows and Mac work with any image file format: JPG, PNG, BMP, GIF, and others all work. You can use screenshots you have taken, photos from your camera or phone, or any picture you have downloaded from the internet.
On Windows, the image does not have to be in a specific folder — the Browse button lets you navigate anywhere on your computer. On Mac, if you want to use a personal photo, open System Settings, go to Wallpaper, and click the + button to add a folder or individual image. Once added, it appears in your Wallpaper options and you can switch to it anytime.
If an image looks stretched or cut off, Windows offers a Choose a fit option below the Browse button. You can select Fill (stretches to cover the screen), Fit (shows the whole image with black bars if needed), Stretch (distorts to fill), Tile (repeats the image), or Center (places it in the middle). Mac automatically scales images to fit your screen.
Setting different backgrounds for multiple monitors
If you use two or more monitors connected to your computer, you can set a different background on each one. On Windows, right-click the desktop and select Personalize. In the Background section, you will see a dropdown that says Select which monitor to customize. Choose the monitor you want to change, then select your image. Repeat for each monitor.
On Mac, open System Settings and go to Wallpaper. Click the dropdown at the top that shows your display name (for example, Built-in Retina Display) and select a different monitor. Choose a new wallpaper for that display. You can set a unique background for each connected monitor this way.
Troubleshooting common background problems
If your background does not change after you select an image, try closing and reopening the Settings app. On Windows, you can also try right-clicking the desktop again and selecting Refresh. If the image appears stretched or distorted, check the Choose a fit setting on Windows — Fit usually works best for photos that do not match your screen size exactly.
If you cannot find the image you want to use, make sure the file is actually saved on your computer. Downloaded images usually go to your Downloads folder. Photos from your phone may need to be transferred first — you can connect your phone and copy files to your Pictures folder, or use cloud storage like OneDrive or iCloud to access them from your computer.
On Mac, if a wallpaper option is grayed out or will not explore, try restarting your computer. This rarely happens, but a restart clears any temporary glitches. On Windows, if the personalization menu does not open when you right-click, try clicking on an empty area of the desktop away from any icons.
Slideshow backgrounds and automatic rotation
Both Windows and Mac let you set up a slideshow that changes your background automatically. On Windows, right-click the desktop, select Personalize, go to Background, and choose Slideshow from the dropdown. Click Browse to select a folder full of images. Windows will cycle through them at an interval you set — you can choose anywhere from 1 minute to 1 day between changes.
On Mac, open System Settings, go to Wallpaper, and select a category like Collections. Some built-in collections automatically rotate throughout the day — for example, the Monterey or Big Sur wallpapers change based on the time of day. If you want a slideshow from your own photos, you can select a folder, and Mac will rotate through those images.
Frequently Asked Questions
Can I use a video as my background instead of a still image?
Windows does not support video backgrounds through the standard Settings app, though some third-party software offers this feature. Mac does not support video backgrounds either. Both systems are designed to use static images for performance reasons — video backgrounds use more battery power and system resources.
Will changing my background slow down my computer?
No. Your background image has no effect on your computer's speed or performance. Whether you use a straightforward solid color or a large photo, your computer runs the same way. The only exception is if you use a slideshow that changes very frequently — that uses slightly more power, but the difference is minimal.
What size image works best for my background?
Your monitor's resolution is the ideal size. On Windows, you can find your screen resolution by right-clicking the desktop and selecting Display settings — look for the resolution listed under Scale and layout. On Mac, go to System Settings, click Displays, and note the resolution shown. Images larger than your resolution will be scaled down; smaller images may appear blurry or tiled. Most modern photos work fine regardless.
Can I password-protect my background so others cannot change it?
Windows and Mac do not have a built-in lock for background settings. If you want to prevent others from changing your background, you can set up a user account with restricted permissions, but this affects all settings, not just the background. For most home users, this is not necessary.
Where do I find the built-in background images on my computer?
On Windows, the default backgrounds are stored in C:\Windows\Web\Wallpaper, but you do not need to navigate there manually — the Personalize menu shows them automatically. On Mac, built-in wallpapers are accessed through System Settings under Wallpaper, and they are organized by category. You do not need to find them in folders.