Remember the good old days of JS errors? (Image credit)

Building large, complex experiments introduces new logic, new code and sometimes new bugs. But most A/B testing tools don't perform error tracking or handling for you. So when you launch your experiment and it tanks...

...did your awesome new idea just not work? Or did bugs torpedo your idea?

Client-side A/B testing tools get criticised for loading huge chunks of JS synchronously in the head (rightfully so). Despite the speed impact, these tools deliver far more value through the experiments they deliver. And luckily, we can help manage the problem in a few ways.

Here are ways we manage container weight at Mint Metrics when managing a client-side A/B testing tool for our clients: