Automatically add www. and .com to a URLYou can shave off a couple of seconds typing in a URL by simply click CTRL + Enter after you type the name of the site. Need .net instead of .com, press CTRL + Shift + Enter instead.

Jump to address barThere are a number of ways to jump right to the address bar from anywhere in browser. Pressing CTRL + L, F6, and ALT + D all accomplish this goal.

Bring back a closed tabWe covered this already, but it's super useful. Accidentally closed a tab? Simply press CTRL + Shift + T to reopen the most recently closed tab and get back to what you were doing.

Use private browsingThe uses for not having cookies and history saved are obvious for certain activities, you know, like shopping for gifts on a shared computer (of course!). Pressing CTRL + Shift + N will launch a new private in Chrome, CTRL + Shift + P will do it in Firefox and Internet Explorer.

Cycle through open tabsPressing CTRL + TAB while in a browser will flip between each one. This can be much faster than moving the mouse and clicking on a tab. CTRL + NUM (1, 2, 3, 4, n..) will also take you to certain tab in that numeric order.