Google Analytics is super powerful and the fact it is free is amazing. If you don’t know what it is and you work in Web Development it is a must that you introduce yourself to it (or some other form of analytic strategy). Check it out at http://www.google.com/analytics/. If you are here because you want to add Browser Size (as opposed to Screen Resolution) tracking to your Google Analytics account(s) then you’ve come to the right place. Enjoy.