How to Change Wallpaper on Mac - Desktop & Lock Screen

By Editorial Team · Updated August 7, 2026 · 838 words · AdSense-ready length

Changing wallpaper on a Mac takes less than a minute once you know where macOS hides the controls. You can use Apple’s built-in collections, your own photos, solid colors, or dynamic wallpapers that shift with time of day. Lock screen and desktop can match or differ. Steps below reflect macOS Ventura, Sonoma, and Sequoia; older versions use System Preferences → Desktop & Screen Saver instead of System Settings.

Step 1: Open Wallpaper Settings

1. Click the Apple menu () in the top-left corner.

2. Choose System Settings (or System Preferences on macOS Monterey and earlier).

3. Click Wallpaper in the sidebar.

If Wallpaper is not in the sidebar, search Wallpaper in the Settings search field.

Step 2: Choose a Built-In or Dynamic Wallpaper

Apple groups wallpapers by type:

Dynamic — changes with time of day (requires appropriate display)
Light & Dark — switches with system appearance
Pictures — landscapes and abstract images
Colors — solid gradients

Click a thumbnail to apply instantly. Some dynamic options need Wide color displays; on unsupported Macs they may appear as static images.

Step 3: Use Your Own Photo

1. In Wallpaper settings, scroll to Photos or click Add Photo / + (wording varies).

2. Select Choose from Photos or Choose a file.

3. Pick an image from Photos or navigate to a folder (Desktop, Downloads, etc.).

4. Choose fit: Fill screen, Fit to screen, or Stretch — Fill is usually best for photos.

For best results use images at least 2560 × 1600 pixels on Retina displays.

Step 4: Set Lock Screen Wallpaper (Separate From Desktop)

On newer macOS versions:

1. Stay in System Settings → Wallpaper.

2. Click the image applied to the desktop.

3. Look for Show on all screens or separate Lock Screen / Desktop toggles.

4. Assign a different image to Lock Screen if offered.

Alternatively: System Settings → Lock Screen may show wallpaper and user switching options depending on version.

If lock screen still shows the old image, log out and back in or restart once.

Step 5: Different Wallpaper per Desktop (Space)

1. Open Mission Control (swipe up with three fingers on trackpad, or press F3).

2. Create multiple Desktops if needed (+ icon top-right).

3. On each Desktop, open System Settings → Wallpaper and apply a different image while that Space is active.

Some users right-click the desktop → Change Desktop Background on older macOS; on current versions System Settings is the primary path.

Step 6: Auto-Rotate Wallpapers (Optional)

In Wallpaper settings, some collections offer Auto-Rotate — a new image every hour, day, or login. Enable if you want variety without manual changes.

Troubleshooting

| Problem | Fix |

|--------|-----|

| Wallpaper option missing | Update macOS; search Settings for "Desktop" or "Wallpaper" |

| Photo looks blurry | Use higher resolution file; choose Fill not Stretch |

| Lock screen unchanged | Set lock screen separately; restart Mac |

| Different monitor, wrong image | System Settings → Displays → set wallpaper per display if option exists |

| Dynamic wallpaper static | Check display supports wide color; disable Low Power Mode |

| Cannot select folder | Use Choose a file and navigate with Finder |

Common Mistakes to Avoid

Using low-resolution images stretched on Retina displays — always prefer native or larger files
Enabling dynamic wallpaper on battery-powered MacBooks without expecting slight battery impact
Forgetting that work-managed Macs may lock wallpaper through MDM profiles
Choosing Stretch to Fill on photos with faces or logos — distorts the image
Setting the same busy photo on lock screen that makes notifications hard to read

FAQ

How do I change wallpaper on Mac from Finder?

Right-click an image file → Set Desktop Picture (if shown). Not all macOS versions offer this; System Settings always works.

Can I use a live video wallpaper on Mac?

macOS does not natively support video wallpapers like some third-party apps. Apple’s Dynamic wallpapers are timed still sequences, not full video.

How do I change wallpaper on MacBook with external monitor?

Each display may have its own wallpaper in Wallpaper settings when the monitor is connected. Select the display thumbnail before choosing an image.

Why does my wallpaper reset after restart?

Check if a management profile (work/school MDM) enforces desktop policy. Personal Macs rarely reset wallpaper unless disk space is critically low.

Does dark mode affect wallpaper?

Light & Dark wallpaper pairs switch with appearance. Regular photos stay the same; UI chrome around them changes with light/d dark mode.

The Takeaway

To change wallpaper on Mac, open System Settings → Wallpaper, pick an Apple collection or your own photo, and optionally set lock screen and per-Space backgrounds. Use high-resolution images and Fill screen for sharp results. Paths may vary slightly by macOS version—use Settings search if the sidebar layout differs on your Mac.