The fastest way to fullscreen depends on what you're running

Most programs on Windows and Mac let you press F11 or Alt+Enter to toggle fullscreen mode. Some applications use their own buttons — a small square icon in the top corner of the window — while others require you to use the menu bar. The method that works changes based on whether you're in a web browser, a game, a video player, or a desktop process.

Before you try any keyboard shortcut, make sure the program window is active (click inside it once). If a shortcut doesn't work, the program either doesn't support fullscreen or uses a different command. In that case, look for a fullscreen button in the interface itself, usually near the top right.

Key Takeaways

  • F11 works for most web browsers on both Windows and Mac to hide the address bar and toolbars.
  • Alt+Enter is the standard fullscreen toggle for many games and older Windows applications.
  • Video players like YouTube and Windows Media Player have a dedicated fullscreen button you can click instead of using a keyboard shortcut.
  • Some programs require you to use the menu bar — click View or Window and look for a fullscreen or maximize option.
  • If a shortcut doesn't work, the program window must be active (in focus) for the command to register.

Fullscreen in web browsers

Press F11 to enter fullscreen mode in Chrome, Firefox, Edge, or Safari. This hides the address bar, tabs, and all toolbars, leaving only the webpage itself. Press F11 again to exit and return to normal view.

If you want to fullscreen only the video or content you're watching — not the entire browser — look for a small square icon in the bottom right corner of the video player. Click it once to expand the video to fill your screen. This is different from browser fullscreen and is the standard method for YouTube, Netflix, and most streaming sites.

On Mac, if F11 doesn't work, try Control+Command+F instead. Some Mac keyboards require you to hold the Function key as well.

Fullscreen for games and applications

Most games respond to Alt+Enter to toggle between windowed and fullscreen mode. This works in many older games and some newer ones, though modern games often have their own fullscreen setting in the graphics or display menu.

Check the game's settings menu first — look under Graphics, Display, or Video. Many games let you choose between fullscreen, windowed fullscreen (which fills your screen but stays within Windows), and windowed mode. Windowed fullscreen is often faster and smoother because it doesn't force your graphics card to switch display modes.

If neither Alt+Enter nor the settings menu works, right-click the game's shortcut or executable file, select Properties, and look for a Compatibility tab. Some older games need compatibility mode enabled to run fullscreen properly on modern Windows.

Fullscreen buttons in media players and apps

Windows Media Player, VLC, and most desktop video applications have a fullscreen button built into the player controls. Look for a small square icon, usually in the bottom right corner of the window. Hover your mouse over the controls if they disappear — they often hide automatically in fullscreen mode.

Photos, document viewers, and image applications sometimes use a different approach. Check the View menu at the top of the window for options like "Full Screen", "Presentation Mode", or "Slideshow". Some applications also let you double-click the image or document itself to toggle fullscreen.

Exiting fullscreen mode

The same key or button that entered fullscreen usually exits it. Press F11 again in a browser, Alt+Enter again in a game, or click the fullscreen button again in a media player. If you're stuck in fullscreen and can't find the button, try pressing Escape — this works in most applications.

On Mac, moving your mouse to the top of the screen often reveals a menu bar that lets you exit fullscreen. You can also try pressing the same key combination you used to enter fullscreen, or look for a green button in the top left corner of the window (this is the Mac fullscreen toggle).

Troubleshooting when fullscreen won't work

If a keyboard shortcut doesn't respond, make sure the program window is the active window. Click inside it once, then try the shortcut again. Some programs don't respond to commands when they're running in the background.

Older games sometimes need you to disable fullscreen optimizations on Windows. Right-click the game's executable file, select Properties, go to the Compatibility tab, and check "Disable fullscreen optimizations". This can fix stuttering and improve performance in some cases.

If a browser won't go fullscreen, check whether you have extensions or security software blocking it. Some ad blockers and privacy tools prevent fullscreen mode for security reasons. Temporarily disable them to test, or add the website to an allowlist.

Fullscreen on multiple monitors

When you press fullscreen on a multi-monitor setup, the program usually expands only on the monitor where the window currently sits. If you want to move a fullscreen window to a different monitor, exit fullscreen first, drag the window to the other monitor, then enter fullscreen again.

Some games and applications let you choose which monitor to fullscreen on in their settings. Check the Display or Graphics menu if you're working with multiple screens regularly.

Frequently Asked Questions

Why does my game run better in windowed fullscreen than in fullscreen mode?

Windowed fullscreen doesn't force your graphics card to switch display modes, which can reduce input lag and improve frame rates on some systems. True fullscreen mode takes over your entire display, which can be faster on older hardware but sometimes causes stuttering on newer systems. Test both modes to see which performs better on your PC.

Can I make a program always open in fullscreen?

Most programs don't have a setting to launch fullscreen automatically, but you can create a shortcut that does. Right-click the program's shortcut, select Properties, and in the Target field, add command-line arguments specific to that program. For example, some games accept a fullscreen flag. Check the program's documentation or support page for the correct syntax.

What's the difference between fullscreen and maximized?

Maximized means the window fills your screen but the taskbar and window borders remain visible. Fullscreen hides everything except the program itself, including the taskbar. Fullscreen is useful for games and videos; maximized is better for work applications where you need quick access to other windows.

Why does fullscreen look blurry on my monitor?

This usually happens when the program is running at a resolution different from your monitor's native resolution. Check the game or process's graphics settings and set the resolution to match your monitor exactly. If it's still blurry, try enabling "Integer Scaling" or "Nearest Neighbor" filtering in the graphics menu, which can sharpen the image.

Does fullscreen mode use more battery on a laptop?

Fullscreen mode itself doesn't use significantly more battery, but games and video playback in fullscreen often run at higher frame rates or quality settings, which does drain the battery faster. If battery life matters, stick to windowed mode or lower graphics settings.