Well, you'd have to scroll around until you got to the button to scroll back up to the top of a page. That way, it would probably be faster to just scroll to the top of the page with the mouse. However, you only use one hand for the mouse. Use one of your fingers from the other hand to press the Home key. That would be quicker.
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https://chrome.google.com/webstore/detail/scroll-to-top/khnloieeghjghmpjeaopaenibbneljpk?hl=en-GB