Vimium 是一个浏览器扩展，可以将浏览器采用 vim 模式操作。支持 Chrome 与 Firefox。
一些最简单的操作示例：
在当前页面导航：
? 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
