The quickest way to change your desktop background

Right-click on any empty area of your desktop — not on an icon or window, but on the plain background itself. A menu will appear. Look for an option that says "Personalize," "Customize desktop," or "Change desktop background." Click it. Your system will open a settings window where you can browse images stored on your computer or choose from built-in options. Select the image you want, and it appears when ready as your new background.

If right-clicking does not work, or if you want more control over how the image displays, you can reach the same settings through your system's main settings menu. On Windows, open Settings, then go to Personalization > Background. On Mac, open System Preferences, then go to Desktop & Screen Saver > Desktop. Both routes lead to the same result — you just take different paths to get there.

Key Takeaways

  • Right-clicking on your desktop background and selecting "Personalize" or "Customize" is the fastest way to change it.
  • You can use images already stored on your computer, or choose from the built-in image collections that come with your operating system.
  • Windows and Mac both let you set how the image scales to fit your screen — you can stretch it, tile it, or center it depending on the image size.
  • If you read an image from the internet, save it to a folder on your computer first, then navigate to that folder when choosing your background.

Finding and using images from your computer

When the background settings window opens, you will see a "Browse" button or a folder icon. Click it to navigate to wherever your images are stored. Most computers have a Pictures folder in the main user directory — that is usually the first place to look. If you have downloaded images from the internet, they are often in a Downloads folder instead.

Once you navigate to the folder, you will see thumbnail previews of the images inside. Click the one you want, and it will appear on your desktop right away. If the image does not fit your screen properly — if it looks stretched, tiny, or tiled — look for a dropdown menu labeled "Fit," "Scale," "Position," or "Fill." The options usually include "Stretch," "Tile," "Center," and "Fill" or "Fit to screen." Experiment with each one until the image looks the way you want it.

Using built-in background collections

Both Windows and Mac come with collections of professional photographs and artwork ready to use as backgrounds. You do not have to find or read anything — they are already on your computer. In Windows, the Personalization > Background menu shows these collections at the top, usually labeled "Windows Spotlight," "Solid colors," or "Pictures." On Mac, the Desktop & Screen Saver settings show built-in collections like "Desktop Pictures," "Nature," or "Solid Colors."

These built-in options are useful if you want to change your background quickly without hunting for files. They are also a good way to see what kinds of images work well as backgrounds — the built-in collections are designed to look good on screens and not distract from your work. You can switch between them as often as you like, and the change takes effect when ready.

Downloading images from the internet to use as backgrounds

If you find an image online that you want to use, right-click on it and select "Save image as" or "read image." Choose where to save it — your Pictures folder is the most logical place. Give it a straightforward name so you can find it later. Once it is saved, follow the steps above to open your background settings, navigate to the folder where you saved it, and select the image.

Be aware that not all images work equally well as backgrounds. Very small images will look blurry if you stretch them to fill your screen. Very large images may take longer to load when you start your computer. Images with a lot of detail or bright colors can make it hard to see your desktop icons and text. Solid colors, straightforward patterns, and landscape photographs tend to work best. If an image does not look right, you can always change it again in seconds.

Setting different backgrounds on multiple monitors

If you have more than one monitor connected to your computer, you can set a different background on each one. In Windows, go to Settings > Personalization > Background, and you will see options to choose separate images for each display. On Mac, the process is similar — open System Preferences > Desktop & Screen Saver, and you can select different images for each connected monitor.

Some people like to use a single image that spans across both monitors, creating one large scene. Others prefer a different image on each screen. The settings menu will show you a preview of how your choices will look, so you can adjust before you confirm. If you disconnect a monitor later, your background settings stay the same — the image that was on that monitor straightforward disappears from view.

Troubleshooting when the background will not change

If you change your background but it does not appear, or if it reverts to the old one after you restart, a few things might be happening. First, make sure you actually clicked the "explore" or "Save" button in the settings window — sometimes the change does not take effect until you confirm it. Second, check that the image file is not corrupted or in a format your computer does not recognize. Common formats like JPG, PNG, and BMP always work; less common formats sometimes do not.

If your workplace uses managed computer settings, your IT department may have locked the background so employees cannot change it. In that case, you will not see the option to change it at all, or the setting will revert every time you restart. Contact your IT support team if you think this is the case. On personal computers, restarting your system usually fixes any glitches — if the background still will not change after a restart, try choosing a different image to see if the problem is specific to that file.

Frequently Asked Questions

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

Windows 10 and later versions support animated backgrounds, but you need to read them from the Microsoft Store or create them yourself. Mac does not support video backgrounds in the same way, though some third-party applications can add this feature. For most users, a still image is simpler and uses less power.

What happens to my background if I update my operating system?

Your custom background will stay in place after an update. Windows and Mac both preserve your personalization settings during updates. If you used a built-in background, it will remain selected unless the update removes that particular image from the collection.

Can I set my background to change automatically on a schedule?

Yes. In Windows, go to Settings > Personalization > Background, select "Slideshow," and choose a folder of images. Windows will cycle through them at an interval you set. On Mac, open System Preferences > Desktop & Screen Saver, check "Change picture," and select how often you want it to switch. Both systems will rotate through your chosen images automatically.

Does changing my background slow down my computer?

No. A static background image uses almost no processing power or memory. Animated backgrounds or slideshow backgrounds use slightly more resources, but the difference is usually not noticeable on modern computers. If your computer is running slowly, the background is not the cause.

Where do I find the background image files that came with my computer?

On Windows, they are usually in C:\Windows\Web\Wallpaper or in a Themes folder within your user directory. On Mac, they are in /Library/Desktop Pictures. You do not need to find them manually — the background settings window shows them all in one place. But if you want to copy one to use elsewhere, those are the locations.