I'm amazed by how bad web browsers are at handling web pages requests for too much RAM. I have an html files with just a one-line JavaScript command to create a 1 GiB array, that I open a few tabs of, whenever I need to stress test a computer:

    var allocation = new Array(1073741824).fill(0);

For an ecosystem that is so VM-heavy, I'm surprised there isn't a system like Linux cgroups, to limit the CPU and RAM usage of any given page.