Vimium

Source: https://github.com/philc/vimium

T: Browse Tabs with

Settings

map <C-u> scrollPageUp
map <C-d> scrollPageDown
map <C-i> goForward
map <C-o> goBack

Also make sure to check Use the link's name and characters for link-hint filtering and Require Enter when filtering hints

Add https://duckduckgo.com/?q= as search engine