How to Use Split View in macOS Catalina (10.15) and Later
Starting in macOS Catalina, Apple made it quick and easy to tile windows using Split View, a feature that lets you quickly take advantage of your Mac’s large screen and use two apps simultaneously. Follow these steps to split your screen.
How to Use Split View in macOS El Capitan (10.11) Through Mojave (10.14)
The steps for using Split View in earlier versions of macOS are a little different (and less automatic), but they still use the full-screen button.
What to Do if Split View Doesn’t Work
In some cases, you might be unable to use an app with Split View. The first thing you should check is the icon on the full-screen button. If an app is compatible, the icon will look like two arrows pointing away from each other. If it isn’t, the icon will be an X. You may also need to adjust Settings. Here’s what to check:
What Can You Do With Split View?
With two apps open in Split View, you can do various tasks more easily without using the Command+Tab keyboard shortcut to switch between them. Some examples are:
Drag and drop a picture from Photos into a new message in Apple Mail. Quickly copy text between programs like Safari and Pages. Resize or write notes on an image in Preview and then drop it into another document. Work while watching a movie on a streaming service like Netflix in a larger window than you can with Picture in Picture. Transcribe an audio file into a word-processing document while keeping the audio player controls on-screen at all times.