diff --git a/home/default.nix b/home/default.nix
index a17ca26..d1abc63 100644
--- a/home/default.nix
+++ b/home/default.nix
@@ -9,6 +9,7 @@
     ../programs/sway/default.nix
     ../programs/shell/default.nix
     ../programs/emacs/default.nix
+    ../programs/firefox/default.nix
     ../programs/prog/default.nix
     ../programs/cava/default.nix
     ../programs/obs/default.nix
diff --git a/programs/firefox/bookmarks/bookmarks.json b/programs/firefox/bookmarks/bookmarks.json
new file mode 100644
index 0000000..f9f2859
--- /dev/null
+++ b/programs/firefox/bookmarks/bookmarks.json
@@ -0,0 +1,155 @@
+[
+  {
+    "name": "Messaging",
+    "bookmarks": [
+      { "name": "WhatApp Web", "url": "https://web.whatsapp.com/" },
+      { "name": "Discord", "url": "https://discord.com/app" },
+      {
+        "name": "Teams",
+        "url": "https://teams.microsoft.com/v2",
+        "tags": ["work"]
+      }
+    ]
+  },
+  {
+    "name": "Development",
+    "bookmarks": [
+      {
+        "name": "Forgejo",
+        "url": "https://git.xenia.me.uk",
+        "tags": ["server", "git"]
+      },
+      { "name": "GitHub", "url": "https://github.com", "tags": ["git"] },
+      {
+        "name": "CCFE GitLab",
+        "url": "https://git.ccfe.ac.uk",
+        "tags": ["work", "git"]
+      }
+    ]
+  },
+  {
+    "name": "Documentation",
+    "bookmarks": [
+      {
+        "name": "Nix",
+        "toolbar": true,
+        "bookmarks": [
+          {
+            "name": "NixOS and Flakes",
+            "url": "https://nixos-and-flakes.thiscute.world/"
+          },
+          {
+            "name": "Home Manager",
+            "url": "https://nix-community.github.io/home-manager/options.xhtml"
+          }
+        ]
+      },
+      {
+        "name": "Awesome",
+        "toolbar": true,
+        "bookmarks": [
+          {
+            "name": "Awesome Emacs",
+            "url": "https://github.com/emacs-tw/awesome-emacs"
+          }
+        ]
+      },
+      {
+        "name": "OpenWiki",
+        "toolbar": true,
+        "bookmarks": [
+          {
+            "name": "Homepage",
+            "url": "https://wiki.jetdata.eu/open/index.php?title=Main_Page"
+          },
+          {
+            "name": "Diagnostic Coordinator",
+            "url": "https://wiki.jetdata.eu/open/index.php?title=Diagnostic_Coordinator_Wiki"
+          },
+          {
+            "name": "Spectroscopy Group",
+            "url": "https://wiki.jetdata.eu/open/index.php?title=Spectroscopy_Group:index"
+          },
+          {
+            "name": "KS5",
+            "url": "https://wiki.jetdata.eu/open/index.php?title=CXS:Topic3"
+          },
+          {
+            "name": "KT3",
+            "url": "https://wiki.jetdata.eu/open/index.php?title=KT3_Journals"
+          }
+        ]
+      }
+    ]
+  },
+  {
+    "name": "Travel",
+    "bookmarks": [{ "name": "ABRP", "url": "https://abetterrouteplanner.com/" }]
+  },
+  {
+    "name": "Work",
+    "bookmarks": [
+      {
+        "name": "JET",
+        "toolbar": true,
+        "bookmarks": [
+          { "name": "Homepage", "url": "http://w3.jet.uk" },
+          {
+            "name": "Physics Summary",
+            "url": "https://users.euro-fusion.org/pages/physics-summary/LatestSession.php"
+          },
+          {
+            "name": "JSPO Reports",
+            "url": "https://www.jspo.jet.uk/pages/operations/jpecreports_2023.html"
+          },
+          { "name": "DVCM Homepage", "url": "https://dvcm.jetdata.eu/" },
+          {
+            "name": "JET Data Services",
+            "url": "https://data.jet.uk",
+            "tags": ["data"]
+          },
+          {
+            "name": "PPF Query",
+            "url": "https://data.jet.uk/ppf/browse/ppfquery",
+            "tags": ["data"]
+          },
+          {
+            "name": "ReqCo",
+            "url": "https://data.jet.uk/reqco/myrequests",
+            "tags": ["data"]
+          }
+        ]
+      },
+      {
+        "name": "MAST-U",
+        "toolbar": true,
+        "bookmarks": [
+          { "name": "Users Page", "url": "https://users.mastu.ukaea.uk/home" },
+          {
+            "name": "Diagnostic Handbook",
+            "url": "https://intranet.ccfe.ac.uk/mastu-handbook"
+          }
+        ]
+      },
+      {
+        "name": "Office",
+        "toolbar": true,
+        "bookmarks": [
+          {
+            "name": "Outlook Calendar",
+            "url": "https://outlook.office.com/calendar/view/workweek"
+          },
+          {
+            "name": "OneDrive",
+            "url": "https://ukaeauk-my.sharepoint.com/personal/evie_litherland-smith_ukaea_uk/"
+          },
+          { "name": "Sharepoint", "url": "https://ukaeauk.sharepoint.com/" }
+        ]
+      }
+    ]
+  },
+  {
+    "name": "Miscellaneous",
+    "bookmarks": []
+  }
+]
diff --git a/programs/firefox/bookmarks/default.nix b/programs/firefox/bookmarks/default.nix
new file mode 100644
index 0000000..c49630b
--- /dev/null
+++ b/programs/firefox/bookmarks/default.nix
@@ -0,0 +1,27 @@
+lib: let
+  withTag = {
+    bookmarks,
+    tags,
+  }: (
+    map (x:
+      if (builtins.hasAttr "bookmarks" x)
+      then {
+        inherit (x) name;
+        toolbar = true;
+        bookmarks = withTag {
+          inherit (x) bookmarks;
+          tags = [(builtins.toString x.name)] ++ tags;
+        };
+      }
+      else {
+        inherit (x) name url;
+        tags = (x.tags or []) ++ tags;
+      })
+    bookmarks
+  );
+in (
+  withTag {
+    bookmarks = builtins.fromJSON (builtins.readFile ./bookmarks.json);
+    tags = [];
+  }
+)
diff --git a/programs/firefox/default.nix b/programs/firefox/default.nix
new file mode 100644
index 0000000..e52ccd5
--- /dev/null
+++ b/programs/firefox/default.nix
@@ -0,0 +1,146 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}: {
+  programs.firefox = {
+    enable = true;
+    policies = {
+      BlockAboutProfiles = true;
+      Cookies = {
+        Behavior = "reject-tracker-and-partition-foreign";
+        BehaviorPrivateBrowsing = "reject";
+        Locked = true;
+      };
+      DefaultDownloadDirectory = "\${home}/Downloads";
+      DisableAppUpdate = true;
+      DisableFirefoxAccounts = true;
+      DisableFirefoxScreenshots = true;
+      DisableFirefoxStudies = true;
+      DisableFormHistory = true;
+      DisablePocket = true;
+      DisableProfileImport = true;
+      DisableSetDesktopBackground = true;
+      DisableSystemAddonUpdate = true;
+      DisableTelemetry = true;
+      DisplayBookmarksToolbar = "never";
+      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";
+        };
+        "addon@simplelogin" = {
+          installation_mode = "force_installed";
+          install_url = "https://addons.mozilla.org/firefox/downloads/latest/simplelogin/latest.xpi";
+        };
+        "{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 = {
+        Locked = true;
+        StartPage = "homepage-locked";
+      };
+      NewTabPage = true;
+      NoDefaultBookmarks = true;
+      OfferToSaveLogins = false;
+      PasswordManagerEnabled = false;
+      PDFjs = {Enabled = false;};
+      Permissions = {
+        Autoplay = {
+          Default = "block-audio-video";
+        };
+      };
+      PictureInPicture = {Enabled = true;};
+      PopupBlocking = {Default = true;};
+      RequestedLocales = ["en-GB"];
+      SearchBar = "unified";
+      ShowHomeButton = true;
+      StartDownloadsInTempDirectory = true;
+    };
+    profiles.default = {
+      settings = {
+        "app.shield.optoutstudies.enabled" = false;
+        "browser.bookmarks.addedImportButton" = false;
+        "browser.bookmarks.showMobileBookmarks" = false;
+        "browser.toolbars.bookmarks.visibility" = "newtab";
+        "browser.contentblocking.category" = "strict";
+        "browser.search.region" = "GB";
+        "browser.search.isUS" = false;
+        "browser.warnOnQuitShortcut" = false;
+        "distribution.searchplugins.defaultLocale" = "en-GB";
+        "doh-rollout.home-region" = "GB";
+        "extensions.activeThemeID" = "{c6698fd1-fe9b-4eae-95d5-fe1703820469}";
+        "extensions.formautofill.creditCards.enabled" = false;
+        "general.useragent.locale" = "en-GB";
+        "intl.accept_languages" = "en-gb,en";
+        "intl.locale.requested" = "en-gb,en";
+        "intl.regional_prefs.use_os_locales" = false;
+        "media.eme.enabled" = true;
+        "privacy.webrtc.legacyGlobalIndicator" = false;
+        "signon.management.page.breach-alerts.enabled" = false;
+        "signon.rememberSignons" = false;
+        "browser.newtabpage.pinned" = [
+          {
+            title = "NixOS Wiki";
+            url = "https://nixos.wiki";
+          }
+          {
+            title = "Arch Wiki";
+            url = "https://wiki.archlinux.org";
+          }
+        ];
+      };
+      containers = {
+        personal = {
+          color = "purple";
+          icon = "fingerprint";
+          id = 0;
+        };
+        work = {
+          color = "blue";
+          icon = "briefcase";
+          id = 1;
+        };
+      };
+      search = {
+        default = "DuckDuckGo";
+        force = true;
+        order = ["DuckDuckGo"];
+        engines = import ./search-engines.nix pkgs;
+      };
+      bookmarks = import ./bookmarks/default.nix lib;
+    };
+  };
+}
diff --git a/programs/firefox/search-engines.nix b/programs/firefox/search-engines.nix
new file mode 100644
index 0000000..1b6b73d
--- /dev/null
+++ b/programs/firefox/search-engines.nix
@@ -0,0 +1,43 @@
+pkgs: {
+  "OpenStreetMap" = {
+    urls = [{template = "https://www.openstreetmap.org/search?query={searchTerms}";}];
+    definedAliases = ["@om"];
+  };
+  "NixOS Packages" = {
+    urls = [{template = "http://search.nixos.org/packages?channel=unstable&size=50&sort=relevance&type=packages&query={searchTerms}";}];
+    icon = "${pkgs.nixos-icons}/share/icons/hicolor/scalable/apps/nix-snowflake.svg";
+    definedAliases = ["@np"];
+  };
+  "NixOS Options" = {
+    urls = [{template = "http://search.nixos.org/options?channel=unstable&size=50&sort=relevance&type=packages&query={searchTerms}";}];
+    icon = "${pkgs.nixos-icons}/share/icons/hicolor/scalable/apps/nix-snowflake.svg";
+    definedAliases = ["@np"];
+  };
+  "Home Manager Options" = {
+    urls = [{template = "https://mipmip.github.io/home-manager-option-search/?query={searchTerms}";}];
+    icon = "${pkgs.nixos-icons}/share/icons/hicolor/scalable/apps/nix-snowflake.svg";
+    definedAliases = ["@hm"];
+  };
+  "PyPI packages" = {
+    urls = [{template = "https://pypi.org/search/?q={searchTerms}";}];
+    definedAliases = ["@py"];
+  };
+  "NixOS Wiki" = {
+    urls = [{template = "https://nixos.wiki/index.php?search={searchTerms}";}];
+    icon = "${pkgs.nixos-icons}/share/icons/hicolor/scalable/apps/nix-snowflake.svg";
+    definedAliases = ["@nw"];
+  };
+  "Arch Wiki" = {
+    urls = [{template = "https://wiki.archlinux.org/index.php?search={searchTerms}";}];
+    definedAliases = ["@aw"];
+  };
+  "GitHub" = {
+    urls = [{template = "https://github.com/search?q={searchTerms}";}];
+    definedAliases = ["@gh"];
+  };
+  "MyNixOS" = {
+    urls = [{template = "https://mynixos.com/search?q={searchTerms}";}];
+    icon = "${pkgs.nixos-icons}/share/icons/hicolor/scalable/apps/nix-snowflake.svg";
+    definedAliases = ["@mn"];
+  };
+}