Everybody’s favorite open-source browser, Firefox, is great right out of the box. And by adding some of the awesome extensions available out there, the browser just gets better and better.

But look under the hood, and there are a bunch of hidden (and some not-so-secret) tips and tricks available that will crank Firefox up and pimp your browser. Make it faster, cooler, more efficient. Get to be a Jedi master with the following cool Firefox tricks.

The list includes:

1) More screen space.
2) Smart keywords.
3) Keyboard shortcuts.
4) Auto-complete.
5) Tab navigation.
6) Mouse shortcuts.
7) Delete items from address bar history.
8) User chrome.
9) Create a user.js file.
10) about:config.
11) Add a keyword for a bookmark.
12) Speed up Firefox.
13) Limit RAM usage.
14) Reduce RAM usage further for when Firefox is minimized.
15) Move or remove the close tab button.

[via LifeHack.org]