I have absolutely no idea about html rendering so my only contributions so far has been to ask/suggest to people who could know. But it is an idea that I keep

I have absolutely no idea about html rendering so my only contributions so far has been to ask/suggest to people who could know. But it is an idea that I keep getting reminded about. It could work adoption wise, since if it can be done technically it can be adapted independently of everyone else on backend and frontend: - backwards compatible, if a browser doesn't take advantage of it it renders completely ordinary and in supporting browsers if a website doesn't use this trick it just renders as any other website - If just one browser and one website does implement this then there will be a full setup. If the idea worked and for example Firefox supported this and Wikipedia or someone else took advantage of it suddenly everyone who used Wikipedia would se faster load and less battery usage.