Visual Hashing Makes Sure You Never Mistype Your Passwords

Chrome/Firefox: If you regularly mistype your password because you're in a rush, Visual Hashing will turn your password into a colored hash to you can immediately see whether you've typed it correctly or not.

As you type your password, Visual Hashing displays four colored boxes in the password field. As you type, the colors change, and your password will have a specific color combination. That way, if you were to mistype it, you'd know right away, because the colors would be all off. See the above image, for example—that's the hash for 123456789 (no, that's not my real password—geez!). Were I to add a 0 to the end, it would be four different shades of green instead.

Obviously, you wouldn't want to use this extension if someone were looking over your shoulder, lest they download the extension themselves and learn all your passwords by the colors they saw, but it can be handy for your home desktop, if you're the type to bang out your passwords a little too quickly.

Visual Hashing is a free extension, works wherever Firefox or Chrome does.

Visual Hashing | Mozilla Add-Ons

Visual Hashing | Chrome Web Store