The quickest way depends on what device you use
Changing your background color — the solid color or image that fills your screen behind all your windows and icons — takes less than a minute on any device. On Windows, you right-click the desktop and pick "Personalize." On Mac, you open System Settings, click "Wallpaper," and choose a color or image. On phones, you long-press the home screen and tap "Wallpaper" or "Customize." The exact steps shift between devices and operating system versions, but the principle stays the same: find the personalization or wallpaper menu, then pick what you want to see.
The reason this matters is that your background affects how you feel about your device every time you use it, and it can make text and icons easier or harder to read depending on what you choose. A bright background with dark text works better than the reverse for most people's eyes. If you pick a photo instead of a solid color, make sure it does not have so much detail that your icons disappear into it.
Key Takeaways
- On Windows 10 and 11, right-click your desktop, select "Personalize," then "Background" to choose a color, image, or slideshow.
- On Mac, open System Settings, click "Wallpaper," and pick from Apple's built-in colors and images or upload your own.
- On iPhones and Android phones, long-press the home screen, tap the wallpaper or customize button, and choose a color or photo from your library.
- Solid colors load faster and use less battery than detailed photos, especially on phones and older computers.
- Your background choice does not affect how your computer or phone runs — it is purely visual and can be changed as often as you want.
Changing your background on Windows
Right-click anywhere on your desktop where there are no windows or icons open. A menu will appear. Click "Personalize" near the bottom. Windows will open the Settings app to the Personalization section.
On the left side, click "Background." You will see three options at the top: "Picture," "Solid color," and "Slideshow." If you want a single color, click "Solid color" and pick from the palette below. If you want an image, click "Picture," then either choose one of Windows' built-in images or click "Browse" to pick a photo from your computer. If you want multiple images to rotate, click "Slideshow," then "Browse" to pick a folder of photos.
Once you pick what you want, close the Settings window. Your background changes when ready. You can change it back anytime by repeating these steps.
Changing your background on Mac
Click the Apple menu in the top-left corner, then "System Settings." In the sidebar on the left, click "Wallpaper." Mac will show you a grid of built-in colors and images organized by category — Dynamic, Light, Dark, and Collections.
Click any image or color to preview it. If you like it, click again to set it as your background. If you want to use a photo from your computer instead, click the "+" button at the bottom left, find your photo, and click "Open." Mac will set it as your background right away.
You can also right-click your desktop and pick "Change Desktop Background" to reach the same menu. On newer Macs, you can set different backgrounds for different spaces (virtual desktops), which is useful if you use multiple workspaces.
Changing your background on iPhone and Android
On an iPhone, long-press the home screen (the screen with your app icons) until a menu appears at the bottom. Tap "Customize." Tap the "+" button to add a new wallpaper, or tap an existing wallpaper to edit it. Choose "Wallpaper," then pick from Apple's built-in options or tap "Photos" to use a picture from your camera roll.
On Android, the steps vary by phone maker, but the principle is the same. Long-press your home screen, then tap "Wallpaper," "Customize," or "Themes" depending on your phone. Most Android phones let you pick from built-in images or upload your own. Some phones also let you set different backgrounds for your lock screen and home screen.
On both phones, you can change your background as often as you want. It does not affect battery life noticeably unless you use a live wallpaper that moves or updates constantly — those drain battery faster than static images.
Why your background choice matters for readability
A background that is too bright or too dark can make your app icons and text hard to read. If you use a light background, your icons and text should be dark. If you use a dark background, your icons and text should be light. Most devices handle this automatically — if you pick a light image, the system darkens the text on top of it so you can still read it.
If you upload your own photo, pick one that is not too busy. A photo with lots of detail and many colors makes it harder to see your icons clearly. A photo with a straightforward subject and a plain background works better. You can also use a solid color, which is the clearest option and uses the least power on your device.
Solid colors versus images and slideshows
A solid color is the fastest and most efficient choice. It loads when ready, uses almost no power, and makes text and icons straightforward to read. If you care about battery life on a phone or laptop, a solid color is your best option.
An image (a single photo) uses slightly more power than a solid color, but not enough to matter on most modern devices. It loads in a fraction of a second and stays the same every time you look at your screen.
A slideshow rotates through multiple images on a schedule you set. It uses more power than a single image because your device has to load and display new images regularly. On a phone, a slideshow can noticeably drain your battery if it changes every few minutes. On a desktop computer plugged into power, it makes no practical difference.
Troubleshooting if your background will not change
If you change your background and it does not stick, restart your device. Sometimes the system does not register the change until you restart. On Windows, you can also try right-clicking your desktop again and clicking "Refresh" to force the desktop to reload.
If you are trying to use a photo you downloaded from the internet, make sure the file is in a format your device recognizes — JPG, PNG, and HEIC are the most common. If the file is corrupted or incomplete, your device may not be able to display it. Try downloading the image again or picking a different one.
On phones, if you cannot find the wallpaper menu, search your settings for "wallpaper" or "background." Different phone makers use different names for the same feature. If you still cannot find it, check your phone maker's support website for your specific model.
Frequently Asked Questions
Can I set a different background for my lock screen and home screen?
Yes, on both iPhone and many Android phones. On iPhone, when you customize your wallpaper, you can choose separate images for your lock screen and home screen. On Android, it depends on your phone maker — some let you set different backgrounds, and some do not. Check your phone's wallpaper settings to see if the option is available.
Will changing my background slow down my computer or phone?
No. Your background is just an image or color that sits behind everything else. It does not affect how fast your device runs or how many programs you can open. The only exception is a live wallpaper on a phone, which can use slightly more battery because it updates constantly.
What if I want to go back to the default background?
Open your background settings and pick one of the built-in options your device came with. On Windows, click "Solid color" and pick a neutral color, or click "Picture" and choose one of Microsoft's default images. On Mac, click "System Settings," then "Wallpaper," and pick one of Apple's built-in options. You cannot permanently delete your default backgrounds — they are part of your operating system.
Can I use a video as my background?
Not as a traditional background, but you can use a live wallpaper on phones, which is a short video or animated image that plays on repeat. On iPhone, some built-in wallpapers are dynamic and move slightly. On Android, you can read live wallpapers from the Google Play Store. Live wallpapers use more battery than static images.
Why does my background look different on my lock screen than on my home screen?
Your device may be explore a filter or blur to make text more readable on your lock screen. On iPhone, the lock screen often darkens or blurs your wallpaper so the time and notifications stand out. This is automatic and cannot be turned off, but you can choose a different image for your lock screen if you want.