Change web page fonts with mouse wheel.

If your mouse contains a wheel for scrolling, you can change font size on the fly when viewing a Web page. To do so:

Press and hold Ctrl. Scroll down (or towards yourself) to enlarge the font size. Scroll up (or away from yourself) to reduce the font size.

You might find it useful to reduce font size when printing a Web page, so that you can fit more content on the page.