movekey is a tiny Chrome extension that registers some basic Vim-like movement hotkeys.
It takes heavy inspiration from Vimium, but takes simplicity and minimalism as its goal. Ideally, by minimizing the number of functions and shortcut keys it registers, it will also minimize the number of sites that it conflicts with.
Available hotkeys:
j scroll down
k scroll up
d scroll down half a page
u scroll up half a page
gg scroll to top of page
G scroll to bottom of page
H go back in history
L go forward in history
yy duplicate current tab
i focus the first input element on the page
Install it from the Chrome store at https://chrome.google.com/webstore/detail/movekey/lkgkefpiaigjibggnoneblbnmefgecda.