Press Windows key + Left Arrow or Right Arrow to snap a window to one side
Select another open window to fill the other side
Drag a window to the left or right edge of the screen to snap it
Use Windows key + Up Arrow or Down Arrow to resize snapped windows
On Windows 11, hover over the maximize button and choose a snap layout
Open the apps you want to use side by side before snapping them
Adjust the divider between windows to change each side’s size
Use Alt + Tab to switch between open windows quickly
For gaming, use the game’s built-in split-screen or local co-op mode
For multiple monitors, drag one window to each screen for a split setup