RndPhrase is a free add-on for the Chrome browser that will transform your normal passwords into something more secure. You can try it on a couple of websites, including Facebook, Google, and Twitter.

For each site you try, it will generate a unique combination of characters. But first, you need to configure a personal seed and enter your password.

The passwords produced are very secure as they are randomized. It's unique for every site, so if one site gets hacked, your other profiles will not be affected.