In all major Internet browsers (e.g., Chrome, Edge, Firefox, Opera), pressing Ctrl + W closes the current tab. If there aren't multiple tabs open, pressing Ctrl + W closes the browser.
Is Ctrl w the same as Alt F4?
The Alt+F4 shortcut is similar to the Ctrl+F4 and Ctrl+W keyboard shortcuts in a few specific situations. Its defining difference is that it closes your applications and programs. In contrast, Ctrl+F4 and Ctrl+W only close the current document within your application.
How do I undo Ctrl W?
Ctrl+Z Pressing these two keys will undo any action.
What does the W in Ctrl W stand for?
The W in Ctrl + W was chosen because previous to tabbed browsing being introduced (and currently, if you have tabbed browsing disabled) it's a shortcut to Close the Current Window. Keyboard Shortcuts for Internet Explorer 6: Close the current window - Ctrl + W.