My Vimium (FireFox add-on or Google Chrome extension) settings (https://github.com/philc/vimium)

vimium-options.json

{
  "settingsVersion": "1.64.6",
  "exclusionRules": [
    {
      "pattern": "^https?://mail.google.com/",
      "passKeys": ""
    },
    {
      "pattern": "https://cloud.digitalocean.com/droplets/",
      "passKeys": ""
    }
  ],
  "filterLinkHints": false,
  "waitForEnterForFilteredHints": true,
  "hideHud": false,
  "keyMappings": "# Prevent the duplicated shortcut key with 'Read Aloud' add-on\nunmap <a-p>\nmap <a-i> togglePinTab\n# Insert your preferred key mappings here.\nmap R reload hard\nmap X Marks.activateCreateMode swap\nmap Y Marks.activateGotoMode swap\n# Dictionary ------------------------------------------------------------\nmap q Vomnibar.activateInNewTab keyword=o\nmap w Vomnibar.activateInNewTab keyword=c\nmap e Vomnibar.activateInNewTab keyword=l\nmap s Vomnibar.activateInNewTab keyword=m",
  "linkHintCharacters": "sadfjklewcmpgh",
  "linkHintNumbers": "0123456789",
  "newTabUrl": "about:newtab",
  "nextPatterns": "next,more,newer,>,›,→,»,≫,>>",
  "previousPatterns": "prev,previous,back,older,<,‹,←,«,≪,<<",
  "regexFindMode": false,
  "ignoreKeyboardLayout": false,
  "scrollStepSize": 60,
  "smoothScroll": true,
  "grabBackFocus": false,
  "searchEngines": "o: https://www.oxfordlearnersdictionaries.com/definition/english/%s Oxford Dictionary\nc: https://dictionary.cambridge.org/dictionary/english/%s Cambridge Dictionary\nl: https://www.ldoceonline.com/dictionary/%s Longman Dictionary\nm: https://www.merriam-webster.com/dictionary/%s Merriam Webster Dictionary\ngh: https://github.com/search?q=%s GitHub\nso: http://stackoverflow.com/search?q=%s StackOverflow\nwa: http://www.wolframalpha.com/input/?i=%s Wolfram|Alpha\nw: https://www.wikipedia.org/w/index.php?title=Special:Search&search=%s Wikipedia\ny: https://www.youtube.com/results?search_query=%s Youtube\nmap: https://www.google.com/maps?q=%s Google maps\ngm: https://mail.google.com/mail/u/0/#search/%s Gmail\ntrello: https://trello.com/search?q=%s Trello\n\n# Use google to search the current site you're on\nsite: javascript:location='http://www.google.com/search?num=100&q=site:'+escape(location.hostname)+'+%s' \n\n# More examples.\n#\n# (Vimium supports search completion Wikipedia, as\n# above, and for these.)\n#\n# g: https://www.google.com/search?q=%s Google\n# l: https://www.google.com/search?q=%s&btnI I'm feeling lucky...\n# b: https://www.bing.com/search?q=%s Bing\n# d: https://duckduckgo.com/?q=%s DuckDuckGo\n# az: https://www.amazon.com/s/?field-keywords=%s Amazon\n# qw: https://www.qwant.com/?q=%s Qwant",
  "searchUrl": "https://www.google.com/search?q=",
  "userDefinedLinkHintCss": "div > .vimiumHintMarker {\n/* linkhint boxes */\nbackground: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#FFF785),\n  color-stop(100%,#FFC542));\nborder: 1px solid #E3BE23;\n}\n\ndiv > .vimiumHintMarker span {\n/* linkhint text */\ncolor: black;\nfont-weight: bold;\nfont-size: 12px;\n}\n\ndiv > .vimiumHintMarker > .matchingCharacter {\n}"
}