{
  inputs,
  pkgs,
  lib,
  config,
  ...
}: {
  programs.firefox = {
    enable = true;
    profiles.xun = {
      extensions = with inputs.firefox-addons.packages.${pkgs.system}; [
        ublock-origin
        darkreader
        sponsorblock
        tridactyl
        translate-web-pages
        cookie-quick-manager
        istilldontcareaboutcookies
        tree-style-tab
        (lib.mkIf (builtins.elem pkgs.keepassxc config.home.packages) keepassxc-browser)
      ];
      bookmarks = {};
      settings = {
        "browser.tabs.inTitleBar" = "0"; # use system title bar
        "browser.newtabpage.enabled" = false;
        "browser.newtab.url" = "about:blank";
        "general.autoScroll" = "true"; # mmb scroll mode

        "browser.newtabpage.enhanced" = false;
        "browser.newtabpage.introShown" = true;
        "browser.newtab.preload" = false;
        "browser.newtabpage.directory.ping" = "";
        "browser.newtabpage.directory.source" = "data:text/plain,{}";
        # Reduce search engine noise in the urlbar's completion window. The
        # shortcuts and suggestions will still work, but Firefox won't clutter
        # its UI with reminders that they exist.
        "browser.urlbar.suggest.searches" = false;
        "browser.urlbar.shortcuts.bookmarks" = false;
        "browser.urlbar.shortcuts.history" = false;
        "browser.urlbar.shortcuts.tabs" = false;
        "browser.urlbar.showSearchSuggestionsFirst" = false;
        "browser.urlbar.speculativeConnect.enabled" = false;

        "browser.download.useDownloadDir" = false;
        "signon.rememberSignons" = false;
        "browser.shell.checkDefaultBrowser" = false;
        # Show whole URL in address bar
        "browser.urlbar.trimURLs" = false;
        # Disable some not so useful functionality.
        "browser.disableResetPrompt" = true; # "Looks like you haven't started Firefox in a while."
        "browser.onboarding.enabled" = false; # "New to Firefox? Let's get started!" tour
        "browser.aboutConfig.showWarning" = false; # Warning when opening about:config
        "media.videocontrols.picture-in-picture.video-toggle.enabled" = false;
        "extensions.pocket.enabled" = false;
        "extensions.shield-recipe-client.enabled" = false;
        #"reader.parse-on-load.enabled" = false; # "reader view"

        # disable telemetry
        # https://github.com/hlissner/dotfiles/blob/089f1a9da9018df9e5fc200c2d7bef70f4546026/modules/desktop/browsers/firefox.nix
        "toolkit.telemetry.unified" = false;
        "toolkit.telemetry.enabled" = false;
        "toolkit.telemetry.server" = "data:,";
        "toolkit.telemetry.archive.enabled" = false;
        "toolkit.telemetry.coverage.opt-out" = true;
        "toolkit.coverage.opt-out" = true;
        "toolkit.coverage.endpoint.base" = "";
        "experiments.supported" = false;
        "experiments.enabled" = false;
        "experiments.manifest.uri" = "";
        "browser.ping-centre.telemetry" = false;
        "app.normandy.enabled" = false;
        "app.normandy.api_url" = "";
        "app.shield.optoutstudies.enabled" = false;
        "datareporting.healthreport.uploadEnabled" = false;
        "datareporting.healthreport.service.enabled" = false;
        "datareporting.policy.dataSubmissionEnabled" = false;
        # Disable crash reports
        "breakpad.reportURL" = "";
        "browser.tabs.crashReporting.sendReport" = false;
        "browser.crashReports.unsubmittedCheck.autoSubmit2" = false;

        # Disable Form autofill
        # https://wiki.mozilla.org/Firefox/Features/Form_Autofill
        "browser.formfill.enable" = false;
        "extensions.formautofill.addresses.enabled" = false;
        "extensions.formautofill.available" = "off";
        "extensions.formautofill.creditCards.available" = false;
        "extensions.formautofill.creditCards.enabled" = false;
        "extensions.formautofill.heuristics.enabled" = false;
      };
    };
  };
}