I wrote a similar article a while ago, explaining also which sizes work best on retina displays and how to generate all the necessary images easily -> https://w

I wrote a similar article a while ago, explaining also which sizes work best on retina displays and how to generate all the necessary images easily -> https://www.codecamps.com/responsive-images/ https://www.codecamps.com/responsive-images/ It helped to increase the Google's PageSpeed Insights rating from 56/100 up to 99/100.