{...}: {
  programs.firefox = {
    enable = true;
    languagePacks = ["en-GB"];
    policies = {
      BlockAboutProfiles = true;
      Containers = {
        Default = [
          {
            name = "Personal";
            icon = "fingerprint";
            color = "purple";
          }
          {
            name = "Work";
            icon = "briefcase";
            color = "blue";
          }
        ];
      };
      Cookies = {
        Behavior = "reject-tracker-and-partition-foreign";
        BehaviorPrivateBrowsing = "reject";
        Locked = true;
      };
      DefaultDownloadDirectory = "\${home}/Downloads";
      DisableAppUpdate = true;
      # DisableBuiltinPDFViewer = true;
      DisableFirefoxAccounts = true;
      DisableFirefoxScreenshots = true;
      DisableFirefoxStudies = true;
      DisableFormHistory = true;
      DisablePocket = true;
      DisableProfileImport = true;
      DisableSetDesktopBackground = true;
      DisableSystemAddonUpdate = true;
      DisableTelemetry = true;
      DisplayBookmarksToolbar = "newtab";
      DisplayMenuBar = "default-off";
      DontCheckDefaultBrowser = true;
      EnableTrackingProtection = {
        Value = true;
        Locked = true;
        Cryptomining = true;
        Fingerprinting = true;
      };
      ExtensionSettings = {
        "queryamoid@kaply.com" = {
          installation_mode = "force_installed";
          install_url = "https://github.com/mkaply/queryamoid/releases/download/v0.1/query_amo_addon_id-0.1-fx.xpi";
        };
        "uBlock0@raymondhill.net" = {
          installation_mode = "force_installed";
          install_url = "https://addons.mozilla.org/firefox/downloads/latest/ublock-origin/latest.xpi";
        };
        # Catppuccin Mocha (Lavender) theme
        "{8446b178-c865-4f5c-8ccc-1d7887811ae3}" = {
          installation_mode = "force_installed";
          install_url = "https://addons.mozilla.org/firefox/downloads/latest/catppuccin-mocha-lavender-git/latest.xpi";
        };
      };
      FirefoxHome = {
        Search = true;
        TopSites = false;
        SponsoredTopSites = false;
        Highlights = false;
        Pocket = false;
        SponsoredPocket = false;
        Snippets = false;
        Locked = true;
      };
      FirefoxSuggest = {
        WebSuggestions = false;
        SponsoredSuggestions = false;
        ImproveSuggest = false;
        Locked = true;
      };
      HardwareAcceleration = true;
      Homepage = {
        URL = "https://nixos.wiki";
        Additional = ["https://wiki.archlinux.org"];
        Locked = true;
        StartPage = "homepage-locked";
      };
      ManagedBookmarks = [
        # TODO update these
        {toplevel_name = "Managed Bookmarks";}
        {
          name = "Server";
          children = [
            {
              name = "Gitea";
              url = "https://git.xenia.me.uk";
            }
            {
              name = "Grafana Dashboard";
              url = "https://grafana.xenia.me.uk";
            }
            {
              name = "AdGuard Home";
              url = "https://guard.xenia.me.uk";
            }
          ];
        }
        {
          name = "Documentation";
          children = [
            {
              name = "NixOS and Flakes";
              url = "https://nixos-and-flakes.thiscute.world/";
            }
            {
              name = "Stylix Docs";
              url = "https://danth.github.io/stylix/";
            }
            {
              name = "The Rust Book";
              url = "https://doc.rust-lang.org/stable/book/";
            }
            {
              name = "Rust by Example";
              url = "https://doc.rust-lang.org/stable/rust-by-example/";
            }
            {
              name = "Mozilla Policy Templates";
              url = "https://mozilla.github.io/policy-templates/";
            }
            {
              name = "Chrome Enterprise Policy List";
              url = "https://chromeenterprise.google/policies/";
            }
          ];
        }
        {
          name = "Awesome Repos";
          children = [
            {
              name = "Emacs";
              url = "https://github.com/emacs-tw/awesome-emacs";
            }
            {
              name = "Hyprland";
              url = "https://github.com/hyprland-community/awesome-hyprland";
            }
            {
              name = "Gitea";
              url = "https://gitea.com/gitea/awesome-gitea";
            }
          ];
        }
      ];
      NewTabPage = false;
      NoDefaultBookmarks = true;
      OfferToSaveLogins = false;
      PasswordManagerEnabled = false;
      PDFjs = {Enabled = false;};
      Permissions = {
        Autoplay = {
          Default = "block-audio-video";
        };
      };
      PictureInPicture = {Enabled = true;};
      PopupBlocking = {Default = true;};
      Preferences = {
        "browser.bookmarks.addedImportButton" = false;
        "browser.bookmarks.showMobileBookmarks" = false;
        "browser.newtabpage.pinned" = [
          {
            title = "NixOS Wiki";
            url = "https://nixos.wiki";
          }
          {
            title = "Arch Wiki";
            url = "https://wiki.archlinux.org";
          }
          {
            title = "Hyprland Wiki";
            url = "https://wiki.hyprland.org";
          }
        ];
        "browser.search.region" = "GB";
        "browser.warnOnQuitShortcut" = false;
        # Catppuccin Mocha (Lavender) theme
        "extensions.activeThemeID" = "{8446b178-c865-4f5c-8ccc-1d7887811ae3}";
        "intl.accept_languages" = "en-gb,en";
        "intl.locale.requested" = "en-gb,en";
        "intl.regional_prefs.use_os_locales" = false;
        "media.eme.enabled" = true;
      };
      RequestedLocales = ["en-GB"];
      SanitizeOnShutdown = {
        Cache = true;
        Cookies = true;
        Downloads = true;
        FormData = true;
        History = true;
        Sessions = true;
        SiteSettings = false;
        OfflineApps = false;
        Locked = true;
      };
      SearchBar = "unified";
      ShowHomeButton = false;
      StartDownloadsInTempDirectory = true;
    };
  };
}