Open the app or page you want to zoom in on
Press Command + Plus (+) to zoom in
Press Command + Minus (-) to zoom out
Press Command + 0 to return to default zoom
In Safari, use View > Zoom In or Zoom Out
In Chrome or other browsers, use the three-dot menu and adjust Zoom
On a trackpad, pinch out to zoom in and pinch in to zoom out
To zoom the whole screen, go to System Settings > Accessibility > Zoom
Turn on keyboard shortcuts or trackpad gestures for screen zoom if needed