diff --git a/flake.lock b/flake.lock
index ee4b1f4..7f5c5be 100644
--- a/flake.lock
+++ b/flake.lock
@@ -34,6 +34,22 @@
         "type": "github"
       }
     },
+    "arkenfox-userjs": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1649497545,
+        "narHash": "sha256-ScO19N/EVpmMzdN2kkfjYIJN7c0CQdZJ9qMZReqMpI4=",
+        "owner": "arkenfox",
+        "repo": "user.js",
+        "rev": "4ff931781a1bf012e0e7e2ec89dc5c2a9bedd890",
+        "type": "github"
+      },
+      "original": {
+        "owner": "arkenfox",
+        "repo": "user.js",
+        "type": "github"
+      }
+    },
     "dracula-fish": {
       "flake": false,
       "locked": {
@@ -102,21 +118,6 @@
         "type": "github"
       }
     },
-    "flake-utils_2": {
-      "locked": {
-        "lastModified": 1644229661,
-        "narHash": "sha256-1YdnJAsNy69bpcjuoKdOYQX0YxZBiCYZo4Twxerqv7k=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "3cecb5b042f7f209c56ffd8371b2711a290ec797",
-        "type": "github"
-      },
-      "original": {
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "type": "github"
-      }
-    },
     "forgit-git": {
       "flake": false,
       "locked": {
@@ -187,26 +188,6 @@
         "type": "github"
       }
     },
-    "nix-flake-tools": {
-      "inputs": {
-        "flake-utils": "flake-utils",
-        "nixpkgs": "nixpkgs_3",
-        "npmlock2nix-repo": "npmlock2nix-repo"
-      },
-      "locked": {
-        "lastModified": 1648440407,
-        "narHash": "sha256-CfqLEAaMKYbT4Zozv02egfAQ7eni2yqys6Nm2zszhNM=",
-        "owner": "rastertail",
-        "repo": "nix-flake-tools",
-        "rev": "37512db32ea23fc3f125ab70555af75ad5bb18e9",
-        "type": "github"
-      },
-      "original": {
-        "owner": "rastertail",
-        "repo": "nix-flake-tools",
-        "type": "github"
-      }
-    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1638587357,
@@ -238,22 +219,6 @@
       }
     },
     "nixpkgs_3": {
-      "locked": {
-        "lastModified": 1647893727,
-        "narHash": "sha256-pOi7VdCb+s5Cwh5CS7YEZVRgH9uCmE87J5W7iXv29Ck=",
-        "owner": "nixos",
-        "repo": "nixpkgs",
-        "rev": "1ec61dd4167f04be8d05c45780818826132eea0d",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nixos",
-        "ref": "nixos-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "nixpkgs_4": {
       "locked": {
         "lastModified": 1647350163,
         "narHash": "sha256-OcMI+PFEHTONthXuEQNddt16Ml7qGvanL3x8QOl2Aao=",
@@ -269,7 +234,7 @@
         "type": "github"
       }
     },
-    "nixpkgs_5": {
+    "nixpkgs_4": {
       "locked": {
         "lastModified": 1645013224,
         "narHash": "sha256-b7OEC8vwzJv3rsz9pwnTX2LQDkeOWz2DbKypkVvNHXc=",
@@ -285,22 +250,6 @@
         "type": "github"
       }
     },
-    "npmlock2nix-repo": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1647281121,
-        "narHash": "sha256-rYFK7a6jzbuJ3Gq9NTDQXnTYOCed6FrMNwdWYm47pQg=",
-        "owner": "nix-community",
-        "repo": "npmlock2nix",
-        "rev": "30ae63fe48ae066df1c135801b66f50ee3d1a0f2",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-community",
-        "repo": "npmlock2nix",
-        "type": "github"
-      }
-    },
     "nur": {
       "locked": {
         "lastModified": 1648030920,
@@ -320,13 +269,13 @@
       "inputs": {
         "agenix": "agenix",
         "asus-touchpad-numpad-driver": "asus-touchpad-numpad-driver",
+        "arkenfox-userjs": "arkenfox-userjs",
         "dracula-fish": "dracula-fish",
         "emacs-overlay": "emacs-overlay",
         "forgit-git": "forgit-git",
         "home-manager": "home-manager",
         "master": "master",
-        "nix-flake-tools": "nix-flake-tools",
-        "nixpkgs": "nixpkgs_4",
+        "nixpkgs": "nixpkgs_3",
         "nur": "nur",
         "stable": "stable",
         "statix": "statix",
@@ -370,7 +319,7 @@
       "inputs": {
         "fenix": "fenix",
         "gitignore": "gitignore",
-        "nixpkgs": "nixpkgs_5"
+        "nixpkgs": "nixpkgs_4"
       },
       "locked": {
         "lastModified": 1645337357,
@@ -388,7 +337,7 @@
     },
     "utils": {
       "inputs": {
-        "flake-utils": "flake-utils_2"
+        "flake-utils": "flake-utils"
       },
       "locked": {
         "lastModified": 1647259887,
diff --git a/flake.nix b/flake.nix
index 5ac1ce5..031f98c 100644
--- a/flake.nix
+++ b/flake.nix
@@ -36,6 +36,11 @@
       url = "github:mohamed-badaoui/asus-touchpad-numpad-driver";
       flake = false;
     };
+
+    arkenfox-userjs = {
+      url = "github:arkenfox/user.js";
+      flake = false;
+    };
   };
 
   outputs = inputs@{ self, agenix, home-manager, nixpkgs, utils, ... }:
diff --git a/modules/desktop/apps/firefox.nix b/modules/desktop/apps/firefox.nix
index dd9007f..3c99c30 100644
--- a/modules/desktop/apps/firefox.nix
+++ b/modules/desktop/apps/firefox.nix
@@ -1,41 +1,55 @@
-{ config, lib, pkgs, ... }:
+{ config, lib, pkgs, inputs, ... }:
+let
+  arkenfox = builtins.readFile (inputs.arkenfox-userjs + "/user.js");
+  overrides = {
+    ## arkenfox overrides
+    # automatic search
+    "keyword.enabled" = true;
+    "browser.search.suggest.enabled" = true;
+    "browser.urlbar.suggest.searches" = true;
 
-{
+    # drm
+    "media.eme.enabled" = true;
+
+    # sanitisation
+    "privacy.clearOnShutdown.history" = false;
+
+    ## OTHER
+    # Dont show warning when accessing about:config
+    "browser.aboutConfig.showWarning" = false;
+
+    # Hide bookmarks
+    "browser.toolbars.bookmarks.visibility" = "never";
+
+    # Smooth scrolling
+    "general.smoothScroll.lines.durationMaxMS" = 125;
+    "general.smoothScroll.lines.durationMinMS" = 125;
+    "general.smoothScroll.mouseWheel.durationMaxMS" = 200;
+    "general.smoothScroll.mouseWheel.durationMinMS" = 100;
+    "general.smoothScroll.msdPhysics.enabled" = true;
+    "general.smoothScroll.other.durationMaxMS" = 125;
+    "general.smoothScroll.other.durationMinMS" = 125;
+    "general.smoothScroll.pages.durationMaxMS" = 125;
+    "general.smoothScroll.pages.durationMinMS" = 125;
+    "mousewheel.min_line_scroll_amount" = 40;
+    "mousewheel.system_scroll_override_on_root_content.enabled" = true;
+    "mousewheel.system_scroll_override_on_root_content.horizontal.factor" = 175;
+    "mousewheel.system_scroll_override_on_root_content.vertical.factor" = 175;
+    "toolkit.scrollbox.horizontalScrollDistance" = 6;
+    "toolkit.scrollbox.verticalScrollDistance" = 2;
+  };
+
+  fullUserJs = ''
+    // Arkenfox user.js
+    ${arkenfox}
+
+    // Overrides
+    ${lib.concatStrings (lib.mapAttrsToList (name: value: ''
+      user_pref("${name}", ${builtins.toJSON value});
+    '') overrides)}'';
+in {
   home-manager.users.moritz.programs.firefox = {
     enable = true;
-    profiles."default" = {
-      extraConfig = "\n";
-      settings = {
-
-        # Dont show warning when accessing about:config
-        "browser.aboutConfig.showWarning" = false;
-
-        # Default Privacy Settings
-        "browser.contentblocking.category" = "strict";
-        "privacy.donottrackheader.enabled" = true;
-
-        # Hide bookmarks
-        "browser.toolbars.bookmarks.visibility" = "never";
-
-        # Smooth scrolling
-        "general.smoothScroll.lines.durationMaxMS" = 125;
-        "general.smoothScroll.lines.durationMinMS" = 125;
-        "general.smoothScroll.mouseWheel.durationMaxMS" = 200;
-        "general.smoothScroll.mouseWheel.durationMinMS" = 100;
-        "general.smoothScroll.msdPhysics.enabled" = true;
-        "general.smoothScroll.other.durationMaxMS" = 125;
-        "general.smoothScroll.other.durationMinMS" = 125;
-        "general.smoothScroll.pages.durationMaxMS" = 125;
-        "general.smoothScroll.pages.durationMinMS" = 125;
-        "mousewheel.min_line_scroll_amount" = 40;
-        "mousewheel.system_scroll_override_on_root_content.enabled" = true;
-        "mousewheel.system_scroll_override_on_root_content.horizontal.factor" =
-          175;
-        "mousewheel.system_scroll_override_on_root_content.vertical.factor" =
-          175;
-        "toolkit.scrollbox.horizontalScrollDistance" = 6;
-        "toolkit.scrollbox.verticalScrollDistance" = 2;
-      };
-    };
+    profiles."default".extraConfig = fullUserJs;
   };
 }