How to Split Screen on Mac: Complete Window Tiling Guide

To split screen on Mac with macOS Sequoia, drag a window to the left or right edge of the screen until an outline appears, then let go. On macOS Sonoma and Ventura, hover over the green button in the top-left corner of a window, choose Tile Window to Left of Screen or Tile Window to Right of Screen, then click a second window to fill the other half.

Window Snapping in macOS Sequoia

macOS Sequoia (macOS 15) lets you snap windows to the edges of the screen:

1. Drag a window by its title bar to the left or right edge of the screen.
2. A light outline shows where the window will go.
3. Let go, and the window fills that half of the screen.
4. Drag a second window to the opposite edge to finish the side-by-side layout.

Split View in macOS Sonoma and Ventura

On macOS Sonoma (14) and Ventura (13), Split View starts from the green button in the corner of the window:

• Hover over the green button in the top-left corner of the window.
• In the menu that appears, click Tile Window to Left of Screen or Tile Window to Right of Screen.
• The window takes one half. The other half shows your open windows, so click the one you want.

Changing the Size and Swapping Sides

The two windows do not have to be exactly half and half:

• Drag the vertical line between the two apps to make one wider, for example when you want a big spreadsheet next to a small notes window.
• To swap sides, drag one window by its title bar to the other side.

Keyboard Shortcuts for Tiling in Sequoia

In macOS Sequoia you can also tile with the keyboard or the menu bar:

• Open the Window menu and choose Move & Resize, then pick a position.
• Press Fn + Control + Left Arrow to snap the window to the left half, or Fn + Control + Right Arrow for the right half.
• To go back, choose Return to Previous Size in the same menu.

How to Leave Split View

In Split View on Sonoma and Ventura, move the pointer to the top of the screen so the menu bar and window buttons appear, hover over the green button, and choose Exit Full Screen. Your windows go back to the normal desktop.

Using Split Screen with More Than One Monitor

With an external monitor, a tiled layout is easy to set up on each screen. The brightness of an external monitor is often set with small buttons on the monitor itself, which is slow to do.

Adjusting External Monitors with Tegaro

The Tegaro Displays tool changes the brightness of external monitors from your keyboard with ⌃⌥ + and ⌃⌥ −. Displays stays free after the 14-day trial. Brightness above 100% on XDR displays needs Pro.

Frequently Asked Questions