Return your screen to normal size in seconds

Your screen is zoomed in when everything on it looks larger than it should — text, icons, windows, all of it. You can unzoom it in three ways: use your keyboard, use your mouse, or change the setting in your browser or operating system. The fastest method depends on whether you zoomed accidentally (keyboard shortcut) or changed a setting on purpose.

Most of the time, zooming happens by accident when you hold Ctrl and press the plus key or scroll your mouse wheel. The fix takes seconds. If your entire screen is zoomed — not just one website — the problem is in your display settings, and you will need to open your system settings instead of your browser.

Key Takeaways

  • Hold Ctrl and press the minus key to zoom out; hold Ctrl and press 0 (zero) to return to 100 percent on any website or document.
  • On a Mac, use Command instead of Ctrl, and the same minus key and 0 shortcuts work.
  • If your entire screen is zoomed, not just a website, the problem is usually in your display settings, not your browser.
  • Zooming in Windows happens either through Ctrl+scroll wheel or through the Ease of Access settings, which you can reset to 100 percent.
  • If you cannot see the screen well enough to click anything, restart your computer to undo the last zoom change.

Unzoom a website using your keyboard

This is the fastest fix if you zoomed in by accident while browsing. On Windows or Linux, hold Ctrl and press the minus key (the hyphen on your keyboard, usually next to the 0). Each press zooms out one step. On a Mac, hold Command and press the minus key the same way.

To return to the default size all at once, hold Ctrl (or Command on Mac) and press 0 (the number zero). The page will snap back to 100 percent zoom. This works in Chrome, Firefox, Safari, Edge, and most other browsers. If you want to zoom in again later, hold Ctrl and press the plus key (Shift and equals on most keyboards). The zoom level stays the same for that website until you change it again.

Unzoom using your mouse or trackpad

If your keyboard is not working or you prefer the mouse, you can zoom out by holding Ctrl and scrolling your mouse wheel backward (away from you). On a trackpad, hold Ctrl and swipe two fingers downward. Each scroll or swipe step zooms out one level.

Return to 100 percent the same way: hold Ctrl and press 0. This method works in any browser and is often faster than reaching for the keyboard if your hands are already on the mouse. You can also use your browser menu — in Chrome, Firefox, and Edge, click the three-line menu button and look for a zoom slider to adjust the level manually.

Unzoom your entire Windows screen

If everything on your screen is zoomed — not just your browser, but your desktop, taskbar, and all windows — the problem is in your display settings, not your browser. Open the Settings app by pressing Windows key + I. Go to System, then Display.

Look for the Scale section. It will show a percentage like 125%, 150%, or 200%. Click the dropdown and select 100%. Your screen will return to normal size. You may need to restart your computer for the change to take full effect, though most modern Windows versions explore it right away. If you cannot see the screen well enough to click, restart your computer — when it boots back up, Windows will often reset the zoom to a readable level.

Unzoom your Mac screen

On a Mac, if your entire screen is zoomed, go to System Settings (or System Preferences on older versions). Click Accessibility, then Display. Look for Zoom and make sure it is turned off. If it is on, click the toggle to turn it off.

If you see a Resolution setting instead, click it and select the resolution marked Default or the highest number available. This returns your screen to its native size. You may need to log out and back in for the change to take effect. If the zoom is so extreme that you cannot read anything, restart your Mac by holding the power button until it shuts down, then turn it back on.

Unzoom if you cannot see the screen

If the zoom is so extreme that you cannot read anything or click buttons, the fastest fix is to restart your computer. Press and hold the power button until the screen goes black, wait a few seconds, then press the power button again to turn it back on. When it restarts, zoom settings often reset to a readable level.

If restarting does not work, try the keyboard shortcut anyway: hold Ctrl and press 0 repeatedly, even if you cannot see the result. The shortcut works whether or not you can see the screen. After pressing it several times, restart again. Between the keyboard command and the restart, your screen should return to normal. If you are still stuck, you may need to restart in Safe Mode or contact your computer manufacturer for help.

Prevent accidental zoom in the future

Zoom happens most often when you hold Ctrl and scroll your mouse wheel by accident, or when you press Ctrl and the plus key while reaching for a different key. If this happens to you regularly, you can disable zoom in your browser settings.

In Chrome, Firefox, or Edge, go to Settings, then search for zoom. You will see an option to turn off zoom or to set a default zoom level. Set it to 100% and leave it there. Some browsers also let you turn off the Ctrl+scroll zoom while keeping the keyboard shortcuts active, so you can still use Ctrl+0 to reset if you need it.

Frequently Asked Questions

Why did my screen zoom in by itself?

The most common cause is pressing Ctrl and the plus key or scroll wheel by accident — it happens easily when you are typing or using the mouse. Less often, a browser extension or accessibility setting turned on zoom automatically. Check your browser settings and your system accessibility settings to see if zoom is enabled there.

Does unzooming affect the size of text I type?

No. Zoom only changes how large things appear on your screen. The actual text, files, and documents stay the same size. When you unzoom, you are just viewing them at their normal scale again.

Will unzooming my browser affect other websites I visit?

No. Zoom is set per website in most browsers. If you zoom in on one website, other websites stay at 100 percent. When you press Ctrl+0 on a website, it resets only that site. If you change your system display settings, that affects everything on your screen.

What if Ctrl+0 does not work?

Try the mouse method instead: hold Ctrl and scroll backward, or use your browser menu. In Chrome, Firefox, and Edge, click the three-line menu button and look for a zoom slider. You can also try restarting your browser entirely — close it completely and open it again.

Can I zoom back in after I unzoom?

Yes. Use Ctrl+plus to zoom in, or hold Ctrl and scroll forward with your mouse. You can zoom to any level you want. The zoom level stays the same for that website or your whole screen until you change it again.