diff --git a/options/custom/programs/chromium.nix b/options/custom/programs/chromium.nix
index 31e9037..91bd5d8 100644
--- a/options/custom/programs/chromium.nix
+++ b/options/custom/programs/chromium.nix
@@ -1,35 +1,309 @@
 {
   config,
   lib,
+  pkgs,
   ...
 }:
 with lib; let
   cfg = config.custom.programs.chromium;
 in {
-  options.custom.programs.chromium.enable = mkOption {default = false;};
+  options.custom.programs.chromium = {
+    enable = mkOption {default = false;};
+    package = mkOption {default = pkgs.google-chrome;};
+  };
 
-  config.home-manager.users.${config.custom.username} = mkIf cfg.enable {
+  config = mkIf cfg.enable {
     # https://wiki.nixos.org/wiki/Chromium
     # https://www.chromium.org/chromium-projects
     programs.chromium = {
       enable = true;
 
-      commandLineArgs = [
-        "--enable-features=OverlayScrollbar,ChromeRefresh2023,TabGroupsSave,TouchpadOverscrollHistoryNavigation"
-      ];
+      # https://chromeenterprise.google/policies/
+      #?? chrome://policy
+      extraOpts = {
+        # HACK: Extensions are force-installed with programs.chromium.extensions option
+        # https://support.google.com/chrome/a/answer/9867568
+        # https://chromeenterprise.google/policies/#ExtensionSettings
+        ExtensionSettings = listToAttrs (map (id: {
+            name = id;
+            value = {
+              installation_mode = "normal_installed";
+              update_url = "https://clients2.google.com/service/update2/crx";
+            };
+          }) (optionals config.custom.default [
+              #// "cjpalhdlnbpafiamejdnhcphjbkeiagm" # uBlock Origin
+              "ddkjiahejlhfcafbddmgiahcphecmpfh" # uBlock Origin Lite
+            ]
+            ++ optionals config.custom.full [
+              "khgocmkkpikpnmmkgmdnfckapcdkgfaf" # 1Password Beta
+              #// "ajopnjidmegmdimjlfnijceegpefgped" # BetterTTV
+              #// "nngceckbapebfimnlniiiahkandclblb" # Bitwarden
+              #// "enamippconapkdmgfgjchkhakpfinmaj" # DeArrow
+              #// "fnaicdffflnofjppbagibeoednhnbjhg" # floccus
+              #// "bnomihfieiccainjcjblhegjgglakjdd" # Improve YouTube
+              "mnjggcdmjocbbbhaepdhchncahnbgone" # SponsorBlock
+              "clngdbkpkpeebahjckkjfobafhncgmne" # Stylus
+              #// "kfidecgcdjjfpeckbblhmfkhmlgecoff" # Svelte DevTools
+              #// "nplimhmoanghlebhdiboeellhgmgommi" # Tab Groups Extension
+              "enboaomnljigfhfjfoalacienlhjlfil" # UnTrap for YouTube
+            ]));
 
-      extensions = [
-        #"ajopnjidmegmdimjlfnijceegpefgped" # BetterTTV
-        #"nngceckbapebfimnlniiiahkandclblb" # Bitwarden
-        #"enamippconapkdmgfgjchkhakpfinmaj" # DeArrow
-        #"fnaicdffflnofjppbagibeoednhnbjhg" # floccus
-        #"bnomihfieiccainjcjblhegjgglakjdd" # Improve YouTube
-        #"mnjggcdmjocbbbhaepdhchncahnbgone" # SponsorBlock
-        #"clngdbkpkpeebahjckkjfobafhncgmne" # Stylus
-        #"kfidecgcdjjfpeckbblhmfkhmlgecoff" # Svelte DevTools
-        #"nplimhmoanghlebhdiboeellhgmgommi" # Tab Groups Extension
-        "ddkjiahejlhfcafbddmgiahcphecmpfh" # uBlock Origin Lite
-      ];
+        # https://chromeenterprise.google/policies/#DefaultSearchProvider
+        DefaultSearchProviderEnabled = true;
+        DefaultSearchProviderKeyword = "g";
+        DefaultSearchProviderName = "Google";
+        DefaultSearchProviderSearchURL = "{google:baseURL}search?q={searchTerms}&{google:RLZ}{google:originalQueryForSuggestion}{google:assistedQueryStats}{google:searchFieldtrialParameter}{google:searchClient}{google:sourceId}ie={inputEncoding}";
+        DefaultSearchProviderSuggestURL = "{google:baseURL}complete/search?output=chrome&q={searchTerms}";
+
+        # https://chromeenterprise.google/policies/#SiteSearchSettings
+        SiteSearchSettings = [
+          {
+            name = "Amazon";
+            shortcut = "a";
+            url = "https://www.amazon.com/s?k={searchTerms}";
+          }
+
+          {
+            name = "ArchWiki";
+            shortcut = "aw";
+            url = "https://wiki.archlinux.org/index.php?search={searchTerms}";
+          }
+
+          {
+            name = "Brave";
+            shortcut = "b";
+            url = "https://search.brave.com/search?q={searchTerms}";
+          }
+
+          {
+            name = "DuckDuckGo";
+            shortcut = "d";
+            url = "https://duckduckgo.com/?q={searchTerms}";
+          }
+
+          {
+            name = "Docker Hub";
+            shortcut = "dh";
+            url = "https://hub.docker.com/search?q={searchTerms}";
+          }
+
+          {
+            name = "e621";
+            shortcut = "e";
+            url = "https://e621.net/posts?tags={searchTerms}";
+          }
+
+          {
+            name = "Element Issues";
+            shortcut = "ei";
+            url = "https://github.com/element-hq/element-web/issues?q=is%3Aissue+is%3Aopen+{searchTerms}";
+          }
+
+          {
+            name = "Flathub";
+            shortcut = "fh";
+            url = "https://flathub.org/apps/search?q={searchTerms}";
+          }
+
+          {
+            name = "GitHub";
+            shortcut = "gh";
+            url = "https://github.com/search?q={searchTerms}";
+          }
+
+          {
+            name = "Home Manager Issues";
+            shortcut = "hi";
+            url = "https://github.com/nix-community/home-manager/issues?q=is%3Aissue+is%3Aopen+{searchTerms}";
+          }
+
+          {
+            name = "Home Manager Options";
+            shortcut = "ho";
+            url = "https://home-manager-options.extranix.com/?query={searchTerms}&release=master";
+          }
+
+          {
+            name = "Hyprland Issues";
+            shortcut = "hyi";
+            url = "https://github.com/hyprwm/Hyprland/issues?q=is%3Aissue+is%3Aopen+{searchTerms}";
+          }
+
+          {
+            name = "i3 Issues";
+            shortcut = "ii";
+            url = "https://github.com/i3/i3/issues?q=is%3Aissue+is%3Aopen+{searchTerms}";
+          }
+
+          {
+            name = "Lutris";
+            shortcut = "l";
+            url = "https://lutris.net/games?q={searchTerms}";
+          }
+
+          {
+            name = "Lix Issues";
+            shortcut = "li";
+            url = "https://git.lix.systems/lix-project/lix/issues?state=open&q={searchTerms}";
+          }
+
+          {
+            name = "Mozilla Web Docs";
+            shortcut = "mdn";
+            url = "https://developer.mozilla.org/en-US/search?q={searchTerms}";
+          }
+
+          {
+            name = "MyNixOS Options";
+            shortcut = "mno";
+            url = "https://mynixos.com/search?q=option+{searchTerms}";
+          }
+
+          {
+            name = "Nix Dev";
+            shortcut = "nd";
+            url = "https://nix.dev/manual/nix/latest?search={searchTerms}";
+          }
+
+          {
+            name = "NixOS Flakes";
+            shortcut = "nf";
+            url = "https://search.nixos.org/flakes?channel=unstable&query={searchTerms}";
+          }
+
+          {
+            name = "Nix Hub";
+            shortcut = "nh";
+            url = "https://www.nixhub.io/search?q={searchTerms}";
+          }
+
+          {
+            name = "NixOS Nixpkgs Issues";
+            shortcut = "ni";
+            url = "https://github.com/NixOS/nixpkgs/issues?q=is%3Aissue+is%3Aopen+{searchTerms}";
+          }
+
+          {
+            name = "NixOS Options";
+            shortcut = "no";
+            url = "https://search.nixos.org/options?channel=unstable&query={searchTerms}";
+          }
+
+          {
+            name = "Noogle Dev";
+            shortcut = "nod";
+            url = "https://noogle.dev/q?term={searchTerms}";
+          }
+
+          {
+            name = "NixOS Packages";
+            shortcut = "np";
+            url = "https://search.nixos.org/packages?channel=unstable&query={searchTerms}";
+          }
+
+          {
+            name = "Nix PR";
+            shortcut = "npr";
+            url = "https://nixpk.gs/pr-tracker.html?pr={searchTerms}";
+          }
+
+          {
+            name = "NixOS Wiki";
+            shortcut = "nw";
+            url = "https://wiki.nixos.org/w/index.php?search={searchTerms}";
+          }
+
+          {
+            name = "Piped";
+            shortcut = "p";
+            url = "https://piped.bjork.tech/results?search_query={searchTerms}";
+          }
+
+          {
+            name = "PCGamingWiki";
+            shortcut = "pc";
+            url = "https://www.pcgamingwiki.com/w/index.php?search={searchTerms}";
+          }
+
+          {
+            name = "ProtonDB";
+            shortcut = "pdb";
+            url = "https://www.protondb.com/search?q={searchTerms}";
+          }
+
+          {
+            name = "PyPI";
+            shortcut = "pip";
+            url = "https://pypi.org/search/?q={searchTerms}";
+          }
+
+          {
+            name = "Reddit";
+            shortcut = "r";
+            url = "https://www.google.com/search?q=site%3Areddit.com+{searchTerms}";
+          }
+
+          {
+            name = "SearXNG";
+            shortcut = "s";
+            url = "https://search.bjork.tech/search?q={searchTerms}";
+          }
+
+          {
+            name = "Sway Issues";
+            shortcut = "si";
+            url = "https://github.com/swaywm/sway/issues?q=is%3Aissue+is%3Aopen+{searchTerms}";
+          }
+
+          {
+            name = "Wikipedia";
+            shortcut = "w";
+            url = "https://en.wikipedia.org/w/index.php?search={searchTerms}";
+          }
+
+          {
+            name = "Wolfram Alpha";
+            shortcut = "wa";
+            url = "https://www.wolframalpha.com/input?i={searchTerms}";
+          }
+
+          {
+            name = "Walker Issues";
+            shortcut = "wi";
+            url = "https://github.com/abenz1267/walker/issues?q=is%3Aissue+is%3Aopen+{searchTerms}";
+          }
+
+          {
+            name = "YouTube";
+            shortcut = "y";
+            url = "https://www.youtube.com/results?search_query={searchTerms}";
+          }
+        ];
+      };
+    };
+
+    home-manager.users.${config.custom.username} = {
+      programs.chromium = {
+        enable = true;
+        package = cfg.package;
+
+        # https://stackoverflow.com/questions/69363637/how-to-write-argument-for-chrome-chromiums-enable-features-flag
+        #?? https://source.chromium.org/chromium/chromium/src/+/main:chrome/browser/about_flags.cc
+        commandLineArgs = let
+          features = concatStringsSep "," [
+            "OverlayScrollbar"
+
+            # https://wiki.archlinux.org/title/Chromium#Touchpad_Gestures_for_Navigation
+            "TouchpadOverscrollHistoryNavigation"
+          ];
+        in
+          [
+            "--enable-features=${features}"
+          ]
+          ++ optionals (cfg.package.pname == "brave") [
+            "--password-store=auto" # Fix secrets defaulting to kwallet
+          ];
+      };
     };
   };
 }