Split screen lets you see two windows side by side on one monitor

Split screen divides your display into sections so you can work in two programs at once without switching back and forth. On Windows, you drag a window to the left or right edge and it snaps to fill half the screen. On Mac, you hold the full-screen button and choose which app takes the other half. On Linux, the method depends on your desktop environment — GNOME has built-in snap, while others use keyboard shortcuts or a window manager.

The fastest way is usually keyboard shortcuts, which work across all three systems. Windows 10 and 11 use Windows key + left or right arrow. Mac uses Control + F3 (or Mission Control + arrow on newer versions). Most Linux desktops use Super key + arrow combinations, though this varies by distribution.

Key Takeaways

  • Windows snaps windows to half-screen by dragging to the edge or pressing Windows key + left/right arrow.
  • Mac requires you to enter full-screen mode first, then hold the full-screen button to choose a second app for the other half.
  • Linux snap behavior depends on your desktop environment; GNOME and KDE both support it, but the keyboard shortcuts differ.
  • You can split into quarters on Windows 11 by dragging to corners, and on Mac by using Mission Control with multiple spaces.
  • Some programs (like web browsers and document editors) work better in split screen than others, depending on their minimum window width.

Split screen on Windows 10 and 11

The easiest method is the keyboard shortcut. Press Windows key + left arrow to snap the active window to the left half. Press Windows key + right arrow to snap it to the right half. Once one window fills half the screen, click any other open window and it automatically fills the remaining half.

You can also drag manually. Click and hold the title bar of any window, then drag it all the way to the left edge of your screen until it snaps to the left half. Release the mouse. The right half shows your other open windows; click the one you want. Repeat the process dragging to the right edge for the opposite layout.

Windows 11 adds quarter-screen snapping. Drag a window to a corner instead of an edge, and it fills one quarter. You can then fill the other three quarters with different windows. Use the keyboard shortcut Windows key + Z to open the snap layout menu, which shows you available configurations for your screen size.

Split screen on Mac

Mac split screen works differently than Windows. Open the first app you want to use. Move your cursor to the green full-screen button in the top-left corner of the window (next to the red close button and yellow minimize button). Hold it down for a moment — the button expands into a menu. Click Tile Window to Left of Screen or Tile Window to Right of Screen.

Your first app now fills half the screen. The other half shows your open windows in a grid. Click the app you want for the second half. Both windows now run side by side in full-screen mode. To exit, move your cursor to the top of the screen until the menu bar appears, then click the green button again and select Exit Full Screen.

On newer Macs with Mission Control, you can also swipe up with four fingers to see all your open windows and spaces. Drag one window to the edge of another to create a split-screen pair. This method is less reliable than the button method but works if you prefer trackpad gestures.

Split screen on Linux

Linux split screen depends on which desktop environment you use. GNOME (used by Ubuntu and Fedora) supports snap by default. Press Super key (Windows key) + left arrow to snap the active window to the left half, or Super + right arrow for the right half. Click any other window to fill the remaining space.

KDE Plasma (used by Kubuntu and openSUSE) also includes snap. Use the same keyboard shortcuts: Super + left or right arrow. You can also drag a window's title bar to the edge of the screen and hold it there for a moment until it snaps.

Other desktop environments like Xfce or i3 may not have built-in snap. Check your system settings under Windows or Display to see if snap is available. If not, you can install a window manager like i3 or use a tiling window manager that automatically divides your screen into sections. Some users also use third-party tools like wmctrl or xdotool to create custom snap layouts via command line.

When split screen works best

Split screen is most useful when you need to reference one window while working in another. Common setups include a web browser on one side and a document editor on the other, or a chat window next to your main work process. Video calls work well in split screen — keep the call on one side and your presentation or document on the other.

Some programs don't work well in split screen because they have a minimum window width. Older software or mobile-optimized web apps may refuse to shrink below a certain size, leaving blank space or forcing the window to stay full-width. Test your most-used programs before relying on split screen for daily work.

If you regularly use the same two programs together, consider creating a custom workspace. Windows 11 and Mac both let you save snap layouts so they reopen in split-screen mode when you restart. Linux users can configure their window manager to remember window positions between sessions.

Troubleshooting split screen problems

If split screen isn't working on Windows, check that you're using Windows 10 or later. Older versions don't support snap. Also verify that the window you're trying to snap isn't already in full-screen mode — you must exit full-screen first. If the keyboard shortcut doesn't work, your keyboard layout or accessibility settings may be interfering. Try the drag method instead.

On Mac, split screen only works in full-screen mode. If the green button doesn't show the tiling option, the app may not support split screen. Some older or specialized applications don't work with macOS split view. Try updating the app or using a different program that supports the feature.

On Linux, if snap isn't working, your desktop environment may not include it by default. Open your system settings and search for "snap" or "window tiling" to see if it's available but disabled. If not, you may need to install a different window manager or use manual resizing with your mouse.

Alternatives to split screen

If split screen doesn't meet your needs, virtual desktops let you organize windows across multiple screens without seeing them at once. Windows 10 and 11 use Task View (Windows key + Tab) to create and switch between virtual desktops. Mac has Spaces (swipe left or right with four fingers). Linux desktops typically include virtual desktops by default — use Super + Page Up or Page Down to switch between them.

A second physical monitor is another option if you have the space and hardware. Many people find two separate screens more comfortable than split screen because each window can be full-sized. This is especially useful if you work with large documents, spreadsheets, or design software that needs more screen real estate.

Window management tools like PowerToys on Windows or Rectangle on Mac automate resizing and positioning without requiring you to drag or use keyboard shortcuts each time. These tools remember your preferred layouts and can explore them with a single keystroke.

Frequently Asked Questions

Can I split my screen into more than two windows?

Yes, on Windows 11 you can split into four quarters by dragging windows to corners. On Mac and most Linux desktops, you're limited to two windows in split-screen mode, but you can use virtual desktops to organize additional windows. Some third-party tools on Mac and Linux allow more complex layouts, but they require manual setup.

Does split screen work on a laptop with a small screen?

Technically yes, but it's uncomfortable. Each window gets roughly half your screen width, which may be too narrow for some programs. Most people find split screen practical only on screens 15 inches or larger. On smaller laptops, virtual desktops or Alt+Tab switching is usually faster than split screen.

Will split screen slow down my computer?

Running two programs at once uses more CPU and memory than running one, but split screen itself doesn't add overhead. If your computer slows down, the problem is the programs you're running, not the split-screen feature. Close unnecessary background programs to free up resources.

Can I save my split-screen layout so it opens the same way next time?

Windows 11 and Mac both let you save snap layouts. On Windows 11, use the snap layout menu (Windows key + Z) and your layout is remembered. On Mac, the split-screen pair stays together if you save it as a Space. On Linux, this depends on your desktop environment and window manager — some save layouts automatically, others require manual configuration.

What if one of my programs won't stay in split screen?

Some programs have a minimum window width and will expand to full-screen if you try to shrink them below that size. Update the program to the latest version, as older software often has stricter size requirements. If updating doesn't help, try a different program that serves the same purpose, or use virtual desktops instead of split screen.