The quickest way to change your wallpaper

On Windows, right-click any empty space on your desktop and select Personalize. Click Background in the left menu, then choose Picture from the dropdown. Select one of the built-in images or click Browse to pick a photo from your computer. On Mac, open System Preferences (or System Settings on newer versions), click Desktop & Screen Saver, then select a category on the left and choose your image.

Both systems let you use photos you already own. If you want a solid color instead of a picture, Windows offers that option in the same Background menu. Mac users can click the Color tab at the top of the Desktop & Screen Saver window.

Key Takeaways

  • Windows users right-click the desktop, select Personalize, then Background to change the wallpaper in seconds.
  • Mac users open System Preferences or System Settings, find Desktop & Screen Saver, and pick from built-in images or their own photos.
  • Both operating systems let you use your own image files—just browse to the folder where your photos are stored.
  • You can set a solid color, a single image, or a slideshow that cycles through multiple photos on a schedule you choose.

Finding and using your own photos as wallpaper

If you want to use a photo you took yourself, both Windows and Mac make it straightforward. On Windows, click Browse in the Background menu and navigate to the folder where your photo is saved—usually Pictures or Downloads. Select the image and it appears on your desktop right away.

On Mac, the process is the same: in the Desktop & Screen Saver window, click the + button at the bottom left to add a folder, or drag a folder directly into the window. Select the folder containing your photos, then click the image you want to use.

For best results, use an image that matches your screen's dimensions. A photo that is too small will appear stretched or tiled; one that is too large will be cropped. Most modern laptops have a screen width of 1920 pixels or wider, so photos taken with a recent phone or camera usually work without problems.

Creating a slideshow wallpaper that changes automatically

Instead of a single image, you can set your wallpaper to cycle through multiple photos. On Windows, go to Personalize > Background, select Slideshow from the dropdown, then click Browse to choose a folder full of photos. Use the Change picture every dropdown to set how often the image switches—options range from 1 minute to 1 day.

On Mac, open Desktop & Screen Saver, select a folder of photos on the left side, then check the box labeled Change picture. Use the dropdown to choose how often you want the image to rotate—options include every 5 seconds, every minute, hourly, daily, or when you wake the computer.

Slideshows are useful if you have a large collection of photos and want variety without manually switching the wallpaper. The slideshow runs whether your laptop is in use or sitting idle, so you can enjoy the rotation even when you step away.

Adjusting how the image fits your screen

Windows offers several ways to position your wallpaper. In the Background menu, look for the Choose a fit dropdown. The most common options are Fill (stretches the image to cover the whole screen), Fit (shrinks the image so it all shows without stretching), and Tile (repeats a small image across the screen). Fill is usually the best choice for photos.

Mac does not offer as many positioning options, but it automatically scales your image to fit the screen without distortion. If you want more control, you can crop or resize the photo before setting it as wallpaper using the built-in Preview app or any photo editor.

Resetting to the default wallpaper

If you want to go back to the original wallpaper that came with your laptop, both systems make it straightforward. On Windows, open Personalize > Background and select one of the built-in Windows images from the top of the list. On Mac, open Desktop & Screen Saver and click Desktop Pictures or Mac OS Big Sur Dynamic (or whichever default collection appears) in the left sidebar.

You can switch back and forth between custom photos and the default wallpaper as often as you like—there is no penalty for changing your mind.

Troubleshooting wallpaper problems

If your wallpaper does not appear after you select it, try restarting your laptop. Sometimes the display does not refresh when ready. On Windows, you can also right-click the desktop and select Refresh to force an update.

If a photo you want to use does not show up in the browse window, make sure the file is in a format your laptop recognizes—JPG, PNG, and BMP files work on both Windows and Mac. If the image is in an unusual format like TIFF or WebP, open it in a photo editor and save it as JPG before trying again.

On Mac, if the Desktop & Screen Saver window does not open, try restarting your computer. If the problem persists, check that you have the latest version of macOS installed by going to System Preferences > Software Update.

Frequently Asked Questions

Can I use a live wallpaper or animated background on my laptop?

Windows 11 offers Windows Spotlight, which automatically rotates beautiful images and can include subtle animations. On Mac, Dynamic Desktop changes the wallpaper throughout the day to match the time of day. Both are built in and free to use. Third-party animated wallpapers exist but require additional software installation.

What size should my photo be to use as wallpaper?

Your photo should be at least as wide and tall as your screen resolution. Most modern laptops use 1920 × 1080 pixels or higher. If your photo is smaller, it may appear blurry or stretched. You can check your screen resolution in Windows by right-clicking the desktop and selecting Display settings, or on Mac by clicking the Apple menu and choosing About This Mac.

Will changing my wallpaper slow down my laptop?

No. A static wallpaper uses almost no processing power. Slideshows use slightly more resources because the system has to load new images, but the impact is negligible on modern laptops. If you notice your laptop running slowly, the wallpaper is not the cause.

Can I set different wallpapers on multiple monitors?

On Windows 11, yes—right-click each monitor's desktop separately and set a different wallpaper for each one. On older Windows versions and Mac, you can only set one wallpaper that spans all connected monitors or duplicates across them. If you need per-monitor control on Mac, third-party apps are available but require installation.