Parallax is a popular scrolling effect used on many modern websites, and when done well can look fantastic. Sadly though, parallax implementations often suffer from being JS heavy and poorly optimised, and can introduce performance problems. So, what are our options for adding a basic parallax style effect without any of the baggage?
Right now, A/B testing is the method du jour for website conversion optimisation, enabling users to test different marketing and design choices from the comfort of their own keyboard. There are plenty of tools which exist expressly to provide this in-depth variant testing, but did you know that it is also possible to set up a similar experiment in the ubiquitous Google Analytics?