Chrome (which I don't use) provides a really good profiler that can give you answers down to the milliseconds on what's happening during page load and also acti

Chrome (which I don't use) provides a really good profiler that can give you answers down to the milliseconds on what's happening during page load and also actions. Web tech provides so much functionality but web dev often don't bother optimizing their sites. I'm not saying browsers are blameless, but at least you get good tools that'll give you hints.