How to change your desktop background
Your desktop background is the image or color that fills your screen behind all your open windows and icons. Changing it takes less than a minute on any operating system — you right-click the empty desktop, find the display or personalization settings, and pick a new image or color. The steps differ slightly between Windows, Mac, and Linux, but the principle is the same on all three.
You can use any image file stored on your computer, or choose from the built-in backgrounds that came with your operating system. Some people change their background weekly; others keep the same one for years. There is no performance cost to changing it — your computer runs at the same speed regardless of what background you choose.
Key Takeaways
- On Windows 10 and 11, right-click the desktop, select Personalize, then choose Background to pick an image or solid color.
- On Mac, go to System Settings, select Wallpaper, and click the image you want from the library or import your own photo.
- On Linux, the method depends on your desktop environment — GNOME uses Settings > Appearance, while KDE uses System Settings > Startup and Shutdown > Splash Screen.
- You can use any image file on your computer as a background, and the operating system will automatically fit it to your screen size.
- Changing your background does not affect your computer's performance, storage space, or any of your files.
Changing your background on Windows 10 and 11
Right-click on any empty area of your desktop — somewhere with no windows or icons open. A menu will appear. Select Personalize from that menu. This opens the Settings app to the personalization panel.
On the left side, you will see a list of options. Click Background. The main panel will now show you choices: you can pick from Microsoft's built-in images, choose a solid color, or use a slideshow that cycles through multiple images. If you want to use your own photo, click the dropdown that says Personalize your background and select Picture. Then click Browse to find an image file on your computer.
Once you select an image, Windows asks how you want it positioned: Fill stretches it to cover the whole screen, Fit shrinks it to show the whole image without stretching, Stretch distorts it to match your screen exactly, Tile repeats it in a grid, and Center places it in the middle. Most people use Fill. Your new background appears when ready.
Changing your background on Mac
Click the Apple menu in the top-left corner and select System Settings (or System Preferences on older versions). In the sidebar, find and click Wallpaper. You will see thumbnails of available backgrounds organized by category: Dynamic, Light, Dark, and Collections.
Click any image to preview it on your screen. If you like it, it becomes your background when ready — there is no separate Save button. To use your own photo, click the + button at the bottom of the window, navigate to your image file, and select it. Mac will automatically fit the image to your screen.
If you want different backgrounds on different monitors, or if you want your background to change based on the time of day, the Dynamic wallpapers handle this automatically. You can also set a slideshow that cycles through multiple images by selecting a folder of photos instead of a single image.
Changing your background on Linux
Linux does not have a single standard way to change backgrounds because different desktop environments handle it differently. The two most common are GNOME and KDE.
On GNOME (used by Ubuntu and Fedora by default), click the Activities button in the top-left corner, type Settings, and open the Settings app. Click Appearance in the sidebar. Under Background, select an image from the library or click the folder icon to choose your own photo. The change takes effect when ready.
On KDE (used by Kubuntu and other distributions), open the process menu and search for System Settings. Navigate to Startup and Shutdown, then Splash Screen or Desktop depending on your version. Select an image or browse for your own. Some KDE versions also allow you to right-click the desktop directly and select Configure Desktop from the context menu.
Using your own photos as a background
Any image file on your computer can become your background — JPG, PNG, BMP, GIF, and WEBP files all work. The image does not need to match your screen's exact dimensions; your operating system will automatically resize it to fit. If the image is smaller than your screen, it will be stretched. If it is larger, it will be cropped or shrunk.
For best results, use an image that is at least as wide and tall as your screen resolution. If you have a 1920×1080 screen, an image that is 1920×1080 or larger will look sharp. Smaller images may appear blurry or pixelated when stretched to fill the screen.
You can organize your photos in a dedicated folder and point your operating system to that folder. Windows and Mac both support slideshow backgrounds that cycle through all the images in a folder automatically — you can set how long each image displays before moving to the next one.
Troubleshooting common background problems
If your background does not change after you select a new image, try closing and reopening the Settings app. On Windows, you can also restart your computer to force the change to take effect. On Mac, log out and log back in if the change does not appear when ready.
If an image file will not open when you try to use it as a background, the file may be corrupted or in a format your operating system does not support. Try converting it to JPG using free tools like Convertio or CloudConvert, then try again. If the image appears stretched or distorted, adjust the positioning option — switch from Fill to Fit if you want to see the whole image without stretching.
On Linux, if the Settings app does not have a Background option, your desktop environment may not support it, or you may need to install additional software. Right-clicking the desktop and looking for a Configure or Properties option is often faster than searching through menus.
Why your background choice matters less than you think
Your desktop background is purely visual — it has no effect on how fast your computer runs, how much storage space you use, or how your programs perform. A high-resolution photo and a solid color use the same amount of memory. Changing your background ten times a day costs nothing in terms of system resources.
The only practical consideration is visibility: a very dark background can make light-colored icons hard to read, and a very busy image can make it harder to see your desktop icons clearly. If you find yourself squinting at your icons, try a simpler background or adjust your icon text color in your operating system's accessibility settings.
Frequently Asked Questions
Can I use a video or animated GIF as my desktop background?
Windows 11 supports animated backgrounds through the Microsoft Store, but you need to read them as apps rather than using a regular video file. Mac and Linux do not natively support animated backgrounds, though third-party tools exist for both. For most users, a static image or slideshow is simpler and more reliable.
What happens to my background if I update my operating system?
Your custom background will remain in place after an update. Windows, Mac, and Linux all preserve your personalization settings during system updates. If you used a built-in background, it may change if that background was removed in the new version, but this is rare.
Can I set different backgrounds on multiple monitors?
Yes. On Windows, right-click the desktop and go to Personalize > Background, then select an image and choose which monitor it appears on. On Mac, hold Option and click the background preview to set different wallpapers for each monitor. On Linux, this depends on your desktop environment — GNOME requires a third-party tool, while KDE has built-in support.
Does my background image need to be a specific size?
No. Your operating system will automatically resize any image to fit your screen, regardless of its original dimensions. Larger images (1920×1080 or bigger) will look sharper than very small images, but any size will work.
Can I schedule my background to change automatically?
Yes. All three operating systems support slideshow backgrounds that cycle through a folder of images on a timer you set. On Windows and Mac, this is built into the background settings. On Linux, it depends on your desktop environment, but GNOME and KDE both support it through their settings panels.