Firefox bookmark keywords for quick search
Add keywords for quick search on frequently visited sites. For example, it’s so convenient to simply put m car
on the search bar and go directly to the definition on Merriam-Webster.

Disable search from the address bar in Firefox
I don’t like it when Firefox automatically searches for a mistyped URL. I’d rather use a search engine shortcut to explicitly search for something.
- Go to
about:config
- Turn off
keyword.enabled
Source: https://superuser.com/q/1431628/101527
Use search engine shortcuts in Firefox

Vimium: open links on new tabs by default
The following mappings will do the trick:
map f LinkHints.activateModeToOpenInNewTab
map F LinkHints.activateMode