How to Zoom in and Zoom out The Page in The Browser

When you are surfing on the Internet, sometimes you find the page with the font size too small or too big.
And of course you want the perfect  size , comfortable according to you.  so you need to zoom in or zoom out.

For all browsers ( Microfoft Edge, Mozilla firefox, Opera, Safari, Chrome )  the keyboard shortcut key to make zoom in or zoom out are the same.

Press Ctrl  + +   to make Zoom in
Press Ctrl  - -   to make Zoom out
Press Ctrl 0   to go back to the Original size.

See also : 
Mozilla Firefox Keyboard Shortcut