See https://v8.dev/blog/cost-of-javascript-2019 https://v8.dev/blog/cost-of-javascript-2019 JavaScript has, in a addition to download time, parse and executio

See https://v8.dev/blog/cost-of-javascript-2019 https://v8.dev/blog/cost-of-javascript-2019 JavaScript has, in a addition to download time, parse and execution time. These are non-negligible on lower end devices. 30k of JS has a far greater impact on the speed of your page than 30k of images.