I have a heard that to optimize websites and apps energy consumption you can take actions on the code (caching, images lazyload, green hosting...) and the design (less videos/images/animations, webp over jpg/png, Dark mode...)
Of course every optimization is good to take, but if making my website in dark mode only reduces energy consumption by 0,000001% maybe it is not my top priority
I know every website is different, but do we have an idea of the average impact of these types of actions on full websites/apps to know which one to prioritize ?