{
  pkgs,
  inputs,
  machineConfig,
  ...
}:
{
  programs.firefox = {
    enable = true;
    profiles.richie = {
      extensions = with inputs.firefox-addons.packages.${machineConfig.system}; [
        bitwarden
        darkreader
        dearrow
        fastforwardteam
        return-youtube-dislikes
        sponsorblock
        ublock-origin
      ];
      search.engines = {
        "Nix Options" = {
          urls = [
            {
              template = "https://search.nixos.org/options";
              params = [
                {
                  name = "type";
                  value = "packages";
                }
                {
                  name = "channel";
                  value = "unstable";
                }
                {
                  name = "query";
                  value = "{searchTerms}";
                }
              ];
            }
          ];
          icon = "${pkgs.nixos-icons}/share/icons/hicolor/scalable/apps/nix-snowflake.svg";
          definedAliases = [ "@o" ];
        };
        "Nix Packages" = {
          urls = [
            {
              template = "https://search.nixos.org/packages";
              params = [
                {
                  name = "type";
                  value = "packages";
                }
                {
                  name = "channel";
                  value = "unstable";
                }
                {
                  name = "query";
                  value = "{searchTerms}";
                }
              ];
            }
          ];
          icon = "${pkgs.nixos-icons}/share/icons/hicolor/scalable/apps/nix-snowflake.svg";
          definedAliases = [ "@n" ];
        };
      };
      search.force = true;
      settings = {
        # SECTION: FASTFOX
        # GENERAL
        "content.notify.interval" = 100000;

        # GFX
        "gfx.canvas.accelerated.cache-items" = 4096;
        "gfx.canvas.accelerated.cache-size" = 512;
        "gfx.content.skia-font-cache-size" = 20;

        # DISK CACHE
        "browser.cache.jsbc_compression_level" = 3;

        # MEDIA CACHE
        "media.memory_cache_max_size" = 65536;
        "media.cache_readahead_limit" = 7200;
        "media.cache_resume_threshold" = 3600;

        # IMAGE CACHE
        "image.mem.decode_bytes_at_a_time" = 32768;

        # NETWORK
        "network.buffer.cache.size" = 262144;
        "network.buffer.cache.count" = 128;
        "network.http.max-connections" = 1800;
        "network.http.max-persistent-connections-per-server" = 10;
        "network.http.max-urgent-start-excessive-connections-per-host" = 5;
        "network.http.pacing.requests.enabled" = false;
        "network.dnsCacheExpiration" = 3600;
        "network.dns.max_high_priority_threads" = 8;
        "network.ssl_tokens_cache_capacity" = 10240;

        # SPECULATIVE LOADING
        "network.dns.disablePrefetch" = true;
        "network.prefetch-next" = false;
        "network.predictor.enabled" = false;

        # EXPERIMENTAL
        "layout.css.grid-template-masonry-value.enabled" = true;
        "dom.enable_web_task_scheduling" = true;
        "layout.css.has-selector.enabled" = true;
        "dom.security.sanitizer.enabled" = true;

        # SECTION: SECUREFOX
        # TRACKING PROTECTION
        "browser.contentblocking.category" = "strict";
        "urlclassifier.trackingSkipURLs" = "*.reddit.com, *.twitter.com, *.twimg.com, *.tiktok.com";
        "urlclassifier.features.socialtracking.skipURLs" = "*.instagram.com, *.twitter.com, *.twimg.com";
        "network.cookie.sameSite.noneRequiresSecure" = true;
        "browser.download.start_downloads_in_tmp_dir" = true;
        "browser.helperApps.deleteTempFileOnExit" = true;
        "browser.uitour.enabled" = false;
        "privacy.globalprivacycontrol.enabled" = true;

        # OCSP & CERTS / HPKP
        "security.OCSP.enabled" = 0;
        "security.remote_settings.crlite_filters.enabled" = true;
        "security.pki.crlite_mode" = 2;

        # SSL / TLS
        "security.ssl.treat_unsafe_negotiation_as_broken" = true;
        "browser.xul.error_pages.expert_bad_cert" = true;
        "security.tls.enable_0rtt_data" = false;

        # DISK AVOIDANCE
        "browser.privatebrowsing.forceMediaMemoryCache" = true;
        "browser.sessionstore.interval" = 60000;

        # SHUTDOWN & SANITIZING
        "privacy.history.custom" = true;

        # SEARCH / URL BAR
        "browser.search.separatePrivateDefault.ui.enabled" = true;
        "browser.urlbar.update2.engineAliasRefresh" = true;
        # PREF: restore search engine suggestions
        "browser.search.suggest.enabled" = true;
        "browser.urlbar.suggest.quicksuggest.sponsored" = false;
        "browser.urlbar.suggest.quicksuggest.nonsponsored" = false;
        "browser.formfill.enable" = false;
        "security.insecure_connection_text.enabled" = true;
        "security.insecure_connection_text.pbmode.enabled" = true;
        "network.IDN_show_punycode" = true;

        # HTTPS-FIRST POLICY
        "dom.security.https_first" = true;
        "dom.security.https_first_schemeless" = true;

        # PASSWORDS
        "signon.formlessCapture.enabled" = false;
        "signon.rememberSignons" = false;
        "signon.privateBrowsingCapture.enabled" = false;
        "network.auth.subresource-http-auth-allow" = 1;
        "editor.truncate_user_pastes" = false;

        # MIXED CONTENT + CROSS-SITE
        "security.mixed_content.block_display_content" = true;
        "security.mixed_content.upgrade_display_content" = true;
        "security.mixed_content.upgrade_display_content.image" = true;
        "pdfjs.enableScripting" = false;
        "extensions.postDownloadThirdPartyPrompt" = false;

        # HEADERS / REFERERS
        "network.http.referer.XOriginTrimmingPolicy" = 2;

        # CONTAINERS
        "privacy.userContext.ui.enabled" = true;

        # WEBRTC
        "media.peerconnection.ice.proxy_only_if_behind_proxy" = true;
        "media.peerconnection.ice.default_address_only" = true;

        # SAFE BROWSING
        "browser.safebrowsing.downloads.remote.enabled" = false;

        # MOZILLA
        # PREF: allow websites to ask you to receive site notifications
        "permissions.default.desktop-notification" = 0; # allow websites to ask
        # PREF: allow websites to ask you for your location
        "permissions.default.geo" = 0;
        "geo.provider.network.url" = "https://location.services.mozilla.com/v1/geolocate?key=%MOZILLA_API_KEY%";
        "permissions.manager.defaultsUrl" = "";
        "webchannel.allowObject.urlWhitelist" = "";

        # TELEMETRY
        "datareporting.policy.dataSubmissionEnabled" = false;
        "datareporting.healthreport.uploadEnabled" = false;
        "toolkit.telemetry.unified" = false;
        "toolkit.telemetry.enabled" = false;
        "toolkit.telemetry.server" = "data:,";
        "toolkit.telemetry.archive.enabled" = false;
        "toolkit.telemetry.newProfilePing.enabled" = false;
        "toolkit.telemetry.shutdownPingSender.enabled" = false;
        "toolkit.telemetry.updatePing.enabled" = false;
        "toolkit.telemetry.bhrPing.enabled" = false;
        "toolkit.telemetry.firstShutdownPing.enabled" = false;
        "toolkit.telemetry.coverage.opt-out" = true;
        "toolkit.coverage.opt-out" = true;
        "toolkit.coverage.endpoint.base" = "";
        "browser.ping-centre.telemetry" = false;
        "browser.newtabpage.activity-stream.feeds.telemetry" = false;
        "browser.newtabpage.activity-stream.telemetry" = false;

        # EXPERIMENTS
        "app.shield.optoutstudies.enabled" = false;
        "app.normandy.enabled" = false;
        "app.normandy.api_url" = "";

        # CRASH REPORTS
        "breakpad.reportURL" = "";
        "browser.tabs.crashReporting.sendReport" = false;
        "browser.crashReports.unsubmittedCheck.autoSubmit2" = false;

        # DETECTION
        "captivedetect.canonicalURL" = "";
        "network.captive-portal-service.enabled" = false;
        "network.connectivity-service.enabled" = false;

        # SECTION: PESKYFOX
        # MOZILLA UI
        "browser.privatebrowsing.vpnpromourl" = "";
        "extensions.getAddons.showPane" = false;
        "extensions.htmlaboutaddons.recommendations.enabled" = false;
        "browser.discovery.enabled" = false;
        "browser.shell.checkDefaultBrowser" = false;
        "browser.newtabpage.activity-stream.asrouter.userprefs.cfr.addons" = false;
        "browser.newtabpage.activity-stream.asrouter.userprefs.cfr.features" = false;
        "browser.preferences.moreFromMozilla" = false;
        "browser.tabs.tabmanager.enabled" = false;
        "browser.aboutConfig.showWarning" = false;
        "browser.aboutwelcome.enabled" = false;

        # THEME ADJUSTMENTS
        "toolkit.legacyUserProfileCustomizations.stylesheets" = true;
        "browser.compactmode.show" = true;
        "browser.display.focus_ring_on_anything" = true;
        "browser.display.focus_ring_style" = 0;
        "browser.display.focus_ring_width" = 0;
        "layout.css.prefers-color-scheme.content-override" = 2;

        # COOKIE BANNER HANDLING
        "cookiebanners.service.mode" = 1;
        "cookiebanners.service.mode.privateBrowsing" = 1;

        # FULLSCREEN NOTICE
        "full-screen-api.transition-duration.enter" = "0 0";
        "full-screen-api.transition-duration.leave" = "0 0";
        "full-screen-api.warning.delay" = -1;
        "full-screen-api.warning.timeout" = 0;

        # URL BAR
        "browser.urlbar.suggest.calculator" = true;
        "browser.urlbar.unitConversion.enabled" = true;
        "browser.urlbar.trending.featureGate" = false;

        # NEW TAB PAGE
        "browser.newtabpage.activity-stream.feeds.topsites" = false;
        "browser.newtabpage.activity-stream.feeds.section.topstories" = false;

        # POCKET
        "extensions.pocket.enabled" = false;

        # DOWNLOADS
        "browser.download.always_ask_before_handling_new_types" = true;
        "browser.download.manager.addToRecentDocs" = false;

        # PDF
        "browser.download.open_pdf_attachments_inline" = true;

        # TAB BEHAVIOR
        "browser.bookmarks.openInTabClosesMenu" = false;
        "browser.menu.showViewImageInfo" = true;
        "findbar.highlightAll" = true;
        "layout.word_select.eat_space_to_next_word" = false;

        # SECTION: MY OVERRIDES
        "browser.startup.homepage" = "https://google.com";
        "identity.fxaccounts.enabled" = false;

        # SECTION SMOOTHFOX
        # OPTION: SHARPEN SCROLLING                                                           *
        "apz.overscroll.enabled" = true; # DEFAULT NON-LINUX
        "mousewheel.min_line_scroll_amount" = 10; # 10-40; adjust this number to your liking; default=5
        "general.smoothScroll.mouseWheel.durationMinMS" = 80; # default=50
        "general.smoothScroll.currentVelocityWeighting" = "0.15"; # default=.25
        "general.smoothScroll.stopDecelerationWeighting" = "0.6"; # default=.4
      };
    };
  };
}