Ctrl+F4, Ctrl+W close tab
Alt+F4 close window
Ctrl+(Shift+?)+Q close browser entirely
Ctrl+Shift+T undo close tab
Ctrl+Shift+N undo close window
Ctrl+N new window
Ctrl+Shift+P new private window
Ctrl+B toggle bookmarks bar
Ctrl+Shift+B open library (bookmarks window)
Ctrl+H open history in side pane
Ctrl+Shift+H open library (history window)
Ctrl+G, F3 find again
Ctrl+Shift+G, Shift+F3 find previous
Ctrl+Shift+V paste as plain text
Ctrl+Shift-Z redo
Alt+Entry in address bar opens address in new tab
See also: https://support.mozilla.org/en-US/kb/keyboard-shortcuts-perf... https://support.mozilla.org/en-US/kb/mouse-shortcuts-perform... https://firefox-source-docs.mozilla.org/devtools-user/keyboa...