Nice! Thanks! That's a real improvement over the existing browsers! Yeah, clearly you can't run Slack or Fecebutt in 4MiB, but there's a lot you could do.

Even Lynx takes 14MB of RSS (not all private!) and 25MB of VSZ to load this discussion page, and Links is 9MB/13MB. (Neither of them produces a usable layout, but that's not because they're using a lot of memory.) The page source is 179K, links's "formatted output" of the page is 59 kB, and Firefox tells me it has 2908 HTML elements in it, so it's probably possible to render it in under a meg. I doubt anyone ever will.