Zoom in and out of a page
Many programs that support zooming in and out of a page or document also support the shortcut key to zoom in and out quickly.
Keyboard and mouse
Press and hold the Ctrl key and press the - (minus) key or + (plus) key to zoom out or in of a web page or document. The - and + keys next to the backspace key, and on the numeric keypad, can be used.
Reset the zoom level
To reset the zoom back to the default view, press and hold the Ctrl key and press the 0 (zero) key.