Website performance desktop/mobile

Hi Noah, thanks very much for your reply. I’m a bit confused now though, you are saying mobile sites take longer to load because the processing power is less. I certainly think that’s true in general. However in the specific example report I shared it says receiving of the first file in the waterfall takes 4.19secs. I thought that was just receiving and didn’t include any processing? Before getting the first file there wouldn’t be anything to process?

I’m not sure whether GTmetrix automatically add any extra loading time for mobile, but I could ask them.