Vimium用 vim 的方式操作浏览器

?       show the help dialog for a list of all available keys
h       scroll left
j       scroll down
k       scroll up
l       scroll right
gg      scroll to top of the page
G       scroll to bottom of the page
d       scroll down half a page
u       scroll up half a page
f       open a link in the current tab
F       open a link in a new tab
r       reload
gs      view source
i       enter insert mode -- all commands will be ignored until you hit Esc to exit
yy      copy the current url to the clipboard
yf      copy a link url to the clipboard
gf      cycle forward to the next frame
gF      focus the main/top frame