Windows: Press F11
Windows (browser full screen): Press Alt + Enter
Windows (app full screen): Click the maximize button (if available) or press Win + Up Arrow
macOS: Press Control + Command + F (system full screen)
macOS (browser full screen): Press Control + Command + F or use the browser menu Full Screen
Chrome/Edge (Windows/macOS): Press F11 (Windows) or Control + Command + F (macOS)
Firefox (Windows/macOS): Press F11
Linux (browser full screen): Press F11
iPhone/iPad: Tap the full screen or expand control (where available)
Android: Tap the full screen or expand control (where available)
YouTube: Tap the full screen icon (bottom-right) or rotate device to landscape
VLC: Double-click video or press F
Microsoft PowerPoint: Start Slideshow (F5) or Slide Show from Current Slide (Shift + F5)
Windows Remote Desktop: Use the full screen button in the Remote Desktop toolbar or press Ctrl + Alt + Break