implement custom tracking policy

app/lib/core/routing/routes.dart

@@ -56,6 +56,7 @@ import 'package:weblibre/features/settings/presentation/screens/addon_collection
 import 'package:weblibre/features/settings/presentation/screens/advanced_settings.dart';
 import 'package:weblibre/features/settings/presentation/screens/appearance_display_settings.dart';
 import 'package:weblibre/features/settings/presentation/screens/bang_settings.dart';
+import 'package:weblibre/features/settings/presentation/screens/custom_tracking_protection.dart';
 import 'package:weblibre/features/settings/presentation/screens/doh_settings.dart';
 import 'package:weblibre/features/settings/presentation/screens/error_logs_screen.dart';
 import 'package:weblibre/features/settings/presentation/screens/fingerprint_settings.dart';
@@ -82,11 +83,11 @@ import 'package:weblibre/features/web_feed/presentation/screens/feed_edit.dart';
 import 'package:weblibre/features/web_feed/presentation/screens/feed_list.dart';
 import 'package:weblibre/features/web_feed/presentation/select_feed_dialog.dart';
 
+part 'routes.bangs.dart';
+part 'routes.browser.dart';
+part 'routes.feeds.dart';
 part 'routes.g.dart';
 part 'routes.settings.dart';
-part 'routes.browser.dart';
-part 'routes.bangs.dart';
-part 'routes.feeds.dart';
 
 @TypedGoRoute<AboutRoute>(name: 'AboutRoute', path: '/about')
 class AboutRoute extends GoRouteData with $AboutRoute {

app/lib/core/routing/routes.g.dart

@@ -151,6 +151,11 @@ RouteBase get $settingsRoute => GoRouteData.$route(
       name: 'TrackingProtectionExceptionsRoute',
       factory: $TrackingProtectionExceptionsRoute._fromState,
     ),
+    GoRouteData.$route(
+      path: 'custom_tracking_protection',
+      name: 'CustomTrackingProtectionRoute',
+      factory: $CustomTrackingProtectionRoute._fromState,
+    ),
     GoRouteData.$route(
       path: 'error_logs',
       name: 'ErrorLogsRoute',
@@ -478,6 +483,28 @@ mixin $TrackingProtectionExceptionsRoute on GoRouteData {
   void replace(BuildContext context) => context.replace(location);
 }
 
+mixin $CustomTrackingProtectionRoute on GoRouteData {
+  static CustomTrackingProtectionRoute _fromState(GoRouterState state) =>
+      CustomTrackingProtectionRoute();
+
+  @override
+  String get location =>
+      GoRouteData.$location('/settings/custom_tracking_protection');
+
+  @override
+  void go(BuildContext context) => context.go(location);
+
+  @override
+  Future<T?> push<T>(BuildContext context) => context.push<T>(location);
+
+  @override
+  void pushReplacement(BuildContext context) =>
+      context.pushReplacement(location);
+
+  @override
+  void replace(BuildContext context) => context.replace(location);
+}
+
 mixin $ErrorLogsRoute on GoRouteData {
   static ErrorLogsRoute _fromState(GoRouterState state) => ErrorLogsRoute();
 

app/lib/core/routing/routes.settings.dart

@@ -75,6 +75,10 @@ part of 'routes.dart';
       name: 'TrackingProtectionExceptionsRoute',
       path: 'tracking_protection_exceptions',
     ),
+    TypedGoRoute<CustomTrackingProtectionRoute>(
+      name: 'CustomTrackingProtectionRoute',
+      path: 'custom_tracking_protection',
+    ),
     TypedGoRoute<ErrorLogsRoute>(name: 'ErrorLogsRoute', path: 'error_logs'),
   ],
 )
@@ -202,3 +206,11 @@ class ErrorLogsRoute extends GoRouteData with $ErrorLogsRoute {
     return const ErrorLogsScreen();
   }
 }
+
+class CustomTrackingProtectionRoute extends GoRouteData
+    with $CustomTrackingProtectionRoute {
+  @override
+  Widget build(BuildContext context, GoRouterState state) {
+    return const CustomTrackingProtectionScreen();
+  }
+}

app/lib/features/geckoview/features/browser/domain/services/engine_settings_replication.dart

@@ -29,6 +29,22 @@ import 'package:weblibre/features/user/domain/repositories/general_settings.dart
 
 part 'engine_settings_replication.g.dart';
 
+/// Checks if any Custom ETP setting changed between two EngineSettings instances.
+bool _customEtpSettingsChanged(GeckoEngineSettings? previous, GeckoEngineSettings current) {
+  if (previous == null) return true;
+  return previous.blockCookies != current.blockCookies ||
+      previous.customCookiePolicy != current.customCookiePolicy ||
+      previous.blockTrackingContent != current.blockTrackingContent ||
+      previous.trackingContentScope != current.trackingContentScope ||
+      previous.blockCryptominers != current.blockCryptominers ||
+      previous.blockFingerprinters != current.blockFingerprinters ||
+      previous.blockRedirectTrackers != current.blockRedirectTrackers ||
+      previous.blockSuspectedFingerprinters != current.blockSuspectedFingerprinters ||
+      previous.suspectedFingerprintersScope != current.suspectedFingerprintersScope ||
+      previous.allowListBaseline != current.allowListBaseline ||
+      previous.allowListConvenience != current.allowListConvenience;
+}
+
 @Riverpod(keepAlive: true)
 class EngineSettingsReplicationService
     extends _$EngineSettingsReplicationService {
@@ -90,11 +106,34 @@ class EngineSettingsReplicationService
                 settings.javascriptEnabled) {
               await _service.javascriptEnabled(settings.javascriptEnabled);
             }
-            if (previous.value?.trackingProtectionPolicy !=
-                settings.trackingProtectionPolicy) {
-              await _service.trackingProtectionPolicy(
-                settings.trackingProtectionPolicy,
-              );
+            // Check if tracking protection policy mode changed OR any custom ETP setting changed
+            final policyModeChanged = previous.value?.trackingProtectionPolicy !=
+                settings.trackingProtectionPolicy;
+            final customSettingsChanged = settings.trackingProtectionPolicy == TrackingProtectionPolicy.custom &&
+                _customEtpSettingsChanged(previous.value, settings);
+
+            if (policyModeChanged || customSettingsChanged) {
+              // Always send full custom settings when in CUSTOM mode
+              if (settings.trackingProtectionPolicy == TrackingProtectionPolicy.custom) {
+                await _service.customTrackingProtectionPolicy(
+                  trackingProtectionPolicy: settings.trackingProtectionPolicy,
+                  blockCookies: settings.blockCookies,
+                  customCookiePolicy: settings.customCookiePolicy,
+                  blockTrackingContent: settings.blockTrackingContent,
+                  trackingContentScope: settings.trackingContentScope,
+                  blockCryptominers: settings.blockCryptominers,
+                  blockFingerprinters: settings.blockFingerprinters,
+                  blockRedirectTrackers: settings.blockRedirectTrackers,
+                  blockSuspectedFingerprinters: settings.blockSuspectedFingerprinters,
+                  suspectedFingerprintersScope: settings.suspectedFingerprintersScope,
+                  allowListBaseline: settings.allowListBaseline,
+                  allowListConvenience: settings.allowListConvenience,
+                );
+              } else {
+                await _service.trackingProtectionPolicy(
+                  settings.trackingProtectionPolicy,
+                );
+              }
             }
             if (previous.value?.httpsOnlyMode != settings.httpsOnlyMode) {
               await _service.httpsOnlyMode(settings.httpsOnlyMode);

app/lib/features/settings/presentation/screens/custom_tracking_protection.dart

@@ -0,0 +1,398 @@
+/*
+ * Copyright (c) 2024-2025 Fabian Freund.
+ *
+ * This file is part of WebLibre
+ * (see https://weblibre.eu).
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+import 'package:fading_scroll/fading_scroll.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_material_design_icons/flutter_material_design_icons.dart';
+import 'package:flutter_mozilla_components/flutter_mozilla_components.dart';
+import 'package:hooks_riverpod/hooks_riverpod.dart';
+import 'package:weblibre/features/settings/presentation/controllers/save_settings.dart';
+import 'package:weblibre/features/settings/presentation/widgets/sections.dart';
+import 'package:weblibre/features/user/data/models/engine_settings.dart';
+import 'package:weblibre/features/user/domain/repositories/engine_settings.dart';
+
+class CustomTrackingProtectionScreen extends StatelessWidget {
+  const CustomTrackingProtectionScreen({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(title: const Text('Custom Tracking Protection')),
+      body: SafeArea(
+        child: FadingScroll(
+          fadingSize: 25,
+          builder: (context, controller) {
+            return ListView(
+              controller: controller,
+              padding: const EdgeInsets.symmetric(horizontal: 12.0),
+              children: const [
+                _AllowlistSection(),
+                _CookiesSection(),
+                _TrackingContentSection(),
+                _TrackersSection(),
+                _AdvancedFingerprintingSection(),
+              ],
+            );
+          },
+        ),
+      ),
+    );
+  }
+}
+
+class _AllowlistSection extends HookConsumerWidget {
+  const _AllowlistSection();
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final allowListBaseline = ref.watch(
+      engineSettingsWithDefaultsProvider.select((s) => s.allowListBaseline),
+    );
+    final allowListConvenience = ref.watch(
+      engineSettingsWithDefaultsProvider.select((s) => s.allowListConvenience),
+    );
+
+    return Column(
+      children: [
+        const SettingSection(name: 'Allowlist Exceptions'),
+        SwitchListTile.adaptive(
+          title: const Text('Fix website major issues'),
+          subtitle: const Text(
+            'Apply exceptions required to avoid major website breakage (recommended)',
+          ),
+          secondary: const Icon(MdiIcons.shieldCheck),
+          value: allowListBaseline,
+          onChanged: (value) async {
+            await ref
+                .read(saveEngineSettingsControllerProvider.notifier)
+                .save((s) => s.copyWith.allowListBaseline(value));
+          },
+        ),
+        SwitchListTile.adaptive(
+          title: const Text('Fix website minor issues'),
+          subtitle: const Text(
+            'Apply exceptions to fix minor issues and enable convenience features',
+          ),
+          secondary: const Icon(MdiIcons.shieldHalfFull),
+          value: allowListConvenience,
+          onChanged: (value) async {
+            await ref
+                .read(saveEngineSettingsControllerProvider.notifier)
+                .save((s) => s.copyWith.allowListConvenience(value));
+          },
+        ),
+      ],
+    );
+  }
+}
+
+class _CookiesSection extends HookConsumerWidget {
+  const _CookiesSection();
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final blockCookies = ref.watch(
+      engineSettingsWithDefaultsProvider.select((s) => s.blockCookies),
+    );
+    final customCookiePolicy = ref.watch(
+      engineSettingsWithDefaultsProvider.select((s) => s.customCookiePolicy),
+    );
+
+    return Column(
+      children: [
+        const SettingSection(name: 'Cookies'),
+        SwitchListTile.adaptive(
+          title: const Text('Block Cookies'),
+          subtitle: const Text('Block cookies based on the policy below'),
+          secondary: const Icon(MdiIcons.cookie),
+          value: blockCookies,
+          onChanged: (value) async {
+            await ref
+                .read(saveEngineSettingsControllerProvider.notifier)
+                .save((s) => s.copyWith.blockCookies(value));
+          },
+        ),
+        if (blockCookies)
+          Padding(
+            padding: const EdgeInsets.symmetric(horizontal: 16.0, vertical: 8),
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                const ListTile(
+                  title: Text('Cookie Policy'),
+                  contentPadding: EdgeInsets.zero,
+                ),
+                DropdownMenu<CustomCookiePolicy>(
+                  initialSelection: customCookiePolicy,
+                  width: double.infinity,
+                  dropdownMenuEntries: const [
+                    DropdownMenuEntry(
+                      value: CustomCookiePolicy.totalProtection,
+                      label: 'Total Cookie Protection (Recommended)',
+                      leadingIcon: Icon(MdiIcons.shieldLock),
+                    ),
+                    DropdownMenuEntry(
+                      value: CustomCookiePolicy.crossSiteTrackers,
+                      label: 'Cross-site and social media trackers',
+                      leadingIcon: Icon(MdiIcons.accountGroup),
+                    ),
+                    DropdownMenuEntry(
+                      value: CustomCookiePolicy.unvisited,
+                      label: 'Unvisited sites',
+                      leadingIcon: Icon(MdiIcons.webOff),
+                    ),
+                    DropdownMenuEntry(
+                      value: CustomCookiePolicy.thirdParty,
+                      label: 'All third-party cookies',
+                      leadingIcon: Icon(MdiIcons.cookieOff),
+                    ),
+                    DropdownMenuEntry(
+                      value: CustomCookiePolicy.allCookies,
+                      label: 'All cookies (may break sites)',
+                      leadingIcon: Icon(MdiIcons.cookieRemove),
+                    ),
+                  ],
+                  onSelected: (value) async {
+                    if (value != null) {
+                      await ref
+                          .read(saveEngineSettingsControllerProvider.notifier)
+                          .save((s) => s.copyWith.customCookiePolicy(value));
+                    }
+                  },
+                ),
+              ],
+            ),
+          ),
+      ],
+    );
+  }
+}
+
+class _TrackingContentSection extends HookConsumerWidget {
+  const _TrackingContentSection();
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final blockTrackingContent = ref.watch(
+      engineSettingsWithDefaultsProvider.select((s) => s.blockTrackingContent),
+    );
+    final trackingContentScope = ref.watch(
+      engineSettingsWithDefaultsProvider.select((s) => s.trackingContentScope),
+    );
+
+    return Column(
+      children: [
+        const SettingSection(name: 'Tracking Content'),
+        SwitchListTile.adaptive(
+          title: const Text('Block Tracking Content'),
+          subtitle: const Text(
+            'Block tracking scripts and resources embedded in websites',
+          ),
+          secondary: const Icon(MdiIcons.scriptTextOutline),
+          value: blockTrackingContent,
+          onChanged: (value) async {
+            await ref
+                .read(saveEngineSettingsControllerProvider.notifier)
+                .save((s) => s.copyWith.blockTrackingContent(value));
+          },
+        ),
+        if (blockTrackingContent)
+          Padding(
+            padding: const EdgeInsets.symmetric(horizontal: 16.0, vertical: 8),
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                const ListTile(
+                  title: Text('Apply to'),
+                  contentPadding: EdgeInsets.zero,
+                ),
+                SizedBox(
+                  width: double.infinity,
+                  child: SegmentedButton<TrackingScope>(
+                    segments: const [
+                      ButtonSegment(
+                        value: TrackingScope.all,
+                        label: Text('All tabs'),
+                      ),
+                      ButtonSegment(
+                        value: TrackingScope.privateOnly,
+                        label: Text('Private tabs only'),
+                      ),
+                    ],
+                    selected: {trackingContentScope},
+                    onSelectionChanged: (value) async {
+                      await ref
+                          .read(saveEngineSettingsControllerProvider.notifier)
+                          .save(
+                            (s) => s.copyWith.trackingContentScope(value.first),
+                          );
+                    },
+                  ),
+                ),
+              ],
+            ),
+          ),
+      ],
+    );
+  }
+}
+
+class _TrackersSection extends HookConsumerWidget {
+  const _TrackersSection();
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final blockCryptominers = ref.watch(
+      engineSettingsWithDefaultsProvider.select((s) => s.blockCryptominers),
+    );
+    final blockFingerprinters = ref.watch(
+      engineSettingsWithDefaultsProvider.select((s) => s.blockFingerprinters),
+    );
+    final blockRedirectTrackers = ref.watch(
+      engineSettingsWithDefaultsProvider.select((s) => s.blockRedirectTrackers),
+    );
+
+    return Column(
+      children: [
+        const SettingSection(name: 'Trackers'),
+        const ListTile(
+          title: Text('Always Blocked'),
+          subtitle: Text(
+            'Ads, analytics, social trackers, and Mozilla social trackers are always blocked in Custom mode.',
+          ),
+          leading: Icon(MdiIcons.shieldLock),
+        ),
+        SwitchListTile.adaptive(
+          title: const Text('Cryptominers'),
+          subtitle: const Text(
+            'Block scripts that use your device to mine cryptocurrency',
+          ),
+          secondary: const Icon(MdiIcons.currencyBtc),
+          value: blockCryptominers,
+          onChanged: (value) async {
+            await ref
+                .read(saveEngineSettingsControllerProvider.notifier)
+                .save((s) => s.copyWith.blockCryptominers(value));
+          },
+        ),
+        SwitchListTile.adaptive(
+          title: const Text('Known Fingerprinters'),
+          subtitle: const Text(
+            'Block scripts that collect information to uniquely identify your device',
+          ),
+          secondary: const Icon(MdiIcons.fingerprint),
+          value: blockFingerprinters,
+          onChanged: (value) async {
+            await ref
+                .read(saveEngineSettingsControllerProvider.notifier)
+                .save((s) => s.copyWith.blockFingerprinters(value));
+          },
+        ),
+        SwitchListTile.adaptive(
+          title: const Text('Redirect Trackers'),
+          subtitle: const Text(
+            'Block trackers that collect data through intermediate URL redirects',
+          ),
+          secondary: const Icon(MdiIcons.routerNetwork),
+          value: blockRedirectTrackers,
+          onChanged: (value) async {
+            await ref
+                .read(saveEngineSettingsControllerProvider.notifier)
+                .save((s) => s.copyWith.blockRedirectTrackers(value));
+          },
+        ),
+      ],
+    );
+  }
+}
+
+class _AdvancedFingerprintingSection extends HookConsumerWidget {
+  const _AdvancedFingerprintingSection();
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final blockSuspectedFingerprinters = ref.watch(
+      engineSettingsWithDefaultsProvider.select(
+        (s) => s.blockSuspectedFingerprinters,
+      ),
+    );
+    final suspectedFingerprintersScope = ref.watch(
+      engineSettingsWithDefaultsProvider.select(
+        (s) => s.suspectedFingerprintersScope,
+      ),
+    );
+
+    return Column(
+      children: [
+        const SettingSection(name: 'Advanced Fingerprinting Protection'),
+        SwitchListTile.adaptive(
+          title: const Text('Suspected Fingerprinters'),
+          subtitle: const Text(
+            'Block additional fingerprinting techniques that may be used to track you',
+          ),
+          secondary: const Icon(MdiIcons.shieldSearch),
+          value: blockSuspectedFingerprinters,
+          onChanged: (value) async {
+            await ref
+                .read(saveEngineSettingsControllerProvider.notifier)
+                .save((s) => s.copyWith.blockSuspectedFingerprinters(value));
+          },
+        ),
+        if (blockSuspectedFingerprinters)
+          Padding(
+            padding: const EdgeInsets.symmetric(horizontal: 16.0, vertical: 8),
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                const ListTile(
+                  title: Text('Apply to'),
+                  contentPadding: EdgeInsets.zero,
+                ),
+                SizedBox(
+                  width: double.infinity,
+                  child: SegmentedButton<TrackingScope>(
+                    segments: const [
+                      ButtonSegment(
+                        value: TrackingScope.all,
+                        label: Text('All tabs'),
+                      ),
+                      ButtonSegment(
+                        value: TrackingScope.privateOnly,
+                        label: Text('Private tabs only'),
+                      ),
+                    ],
+                    selected: {suspectedFingerprintersScope},
+                    onSelectionChanged: (value) async {
+                      await ref
+                          .read(saveEngineSettingsControllerProvider.notifier)
+                          .save(
+                            (s) => s.copyWith.suspectedFingerprintersScope(
+                              value.first,
+                            ),
+                          );
+                    },
+                  ),
+                ),
+              ],
+            ),
+          ),
+      ],
+    );
+  }
+}

app/lib/features/settings/presentation/screens/privacy_security_settings.dart

@@ -512,12 +512,25 @@ class _EnhancedTrackingProtectionSection extends HookConsumerWidget {
           RadioGroup(
             groupValue: trackingProtectionPolicy,
             onChanged: (value) async {
-              await ref
-                  .read(saveEngineSettingsControllerProvider.notifier)
-                  .save(
-                    (currentSettings) => currentSettings.copyWith
-                        .trackingProtectionPolicy(value),
-                  );
+              if (value != null) {
+                // Save the policy change
+                await ref
+                    .read(saveEngineSettingsControllerProvider.notifier)
+                    .save(
+                      (currentSettings) => currentSettings.copyWith
+                          .trackingProtectionPolicy(value),
+                    );
+              }
+
+              // Navigate to custom settings screen when Custom is selected
+              if (value == TrackingProtectionPolicy.custom ||
+                  (value == null &&
+                      trackingProtectionPolicy ==
+                          TrackingProtectionPolicy.custom)) {
+                if (context.mounted) {
+                  await CustomTrackingProtectionRoute().push(context);
+                }
+              }
             },
             child: const Column(
               children: [
@@ -541,8 +554,10 @@ class _EnhancedTrackingProtectionSection extends HookConsumerWidget {
                 ),
                 RadioListTile<TrackingProtectionPolicy>.adaptive(
                   value: TrackingProtectionPolicy.custom,
+                  toggleable: true,
                   title: Text('Custom'),
                   subtitle: Text('Choose which trackers and scripts to block.'),
+                  secondary: Icon(Icons.chevron_right),
                 ),
               ],
             ),

app/lib/features/user/data/models/engine_settings.dart

@@ -79,6 +79,31 @@ class EngineSettings extends GeckoEngineSettings with FastEquatable {
   @override
   List<String> get locales => super.locales!;
 
+  // Custom Tracking Protection overrides
+  @override
+  bool get blockCookies => super.blockCookies!;
+  @override
+  CustomCookiePolicy get customCookiePolicy => super.customCookiePolicy!;
+  @override
+  bool get blockTrackingContent => super.blockTrackingContent!;
+  @override
+  TrackingScope get trackingContentScope => super.trackingContentScope!;
+  @override
+  bool get blockCryptominers => super.blockCryptominers!;
+  @override
+  bool get blockFingerprinters => super.blockFingerprinters!;
+  @override
+  bool get blockRedirectTrackers => super.blockRedirectTrackers!;
+  @override
+  bool get blockSuspectedFingerprinters => super.blockSuspectedFingerprinters!;
+  @override
+  TrackingScope get suspectedFingerprintersScope =>
+      super.suspectedFingerprintersScope!;
+  @override
+  bool get allowListBaseline => super.allowListBaseline!;
+  @override
+  bool get allowListConvenience => super.allowListConvenience!;
+
   final QueryParameterStripping queryParameterStripping;
 
   final BounceTrackingProtectionMode bounceTrackingProtectionMode;
@@ -135,6 +160,17 @@ class EngineSettings extends GeckoEngineSettings with FastEquatable {
     required super.fingerprintingProtectionOverrides,
     required this.enablePdfJs,
     required super.locales,
+    required super.blockCookies,
+    required super.customCookiePolicy,
+    required super.blockTrackingContent,
+    required super.trackingContentScope,
+    required super.blockCryptominers,
+    required super.blockFingerprinters,
+    required super.blockRedirectTrackers,
+    required super.blockSuspectedFingerprinters,
+    required super.suspectedFingerprintersScope,
+    required super.allowListBaseline,
+    required super.allowListConvenience,
   });
 
   EngineSettings.withDefaults({
@@ -160,6 +196,17 @@ class EngineSettings extends GeckoEngineSettings with FastEquatable {
     String? fingerprintingProtectionOverrides,
     bool? enablePdfJs,
     List<String>? locales,
+    bool? blockCookies,
+    CustomCookiePolicy? customCookiePolicy,
+    bool? blockTrackingContent,
+    TrackingScope? trackingContentScope,
+    bool? blockCryptominers,
+    bool? blockFingerprinters,
+    bool? blockRedirectTrackers,
+    bool? blockSuspectedFingerprinters,
+    TrackingScope? suspectedFingerprintersScope,
+    bool? allowListBaseline,
+    bool? allowListConvenience,
   }) : queryParameterStripping =
            queryParameterStripping ?? QueryParameterStripping.disabled,
        bounceTrackingProtectionMode =
@@ -199,6 +246,19 @@ class EngineSettings extends GeckoEngineSettings with FastEquatable {
              WidgetsBinding.instance.platformDispatcher.locales
                  .map((x) => x.toLanguageTag())
                  .toList(),
+         blockCookies: blockCookies ?? true,
+         customCookiePolicy:
+             customCookiePolicy ?? CustomCookiePolicy.totalProtection,
+         blockTrackingContent: blockTrackingContent ?? true,
+         trackingContentScope: trackingContentScope ?? TrackingScope.all,
+         blockCryptominers: blockCryptominers ?? true,
+         blockFingerprinters: blockFingerprinters ?? true,
+         blockRedirectTrackers: blockRedirectTrackers ?? true,
+         blockSuspectedFingerprinters: blockSuspectedFingerprinters ?? true,
+         suspectedFingerprintersScope:
+             suspectedFingerprintersScope ?? TrackingScope.all,
+         allowListBaseline: allowListBaseline ?? true,
+         allowListConvenience: allowListConvenience ?? false,
        );
 
   static AddonCollection? _addonCollectionFromJson(String? json) =>
@@ -238,5 +298,16 @@ class EngineSettings extends GeckoEngineSettings with FastEquatable {
     fingerprintingProtectionOverrides,
     enablePdfJs,
     locales,
+    blockCookies,
+    customCookiePolicy,
+    blockTrackingContent,
+    trackingContentScope,
+    blockCryptominers,
+    blockFingerprinters,
+    blockRedirectTrackers,
+    blockSuspectedFingerprinters,
+    suspectedFingerprintersScope,
+    allowListBaseline,
+    allowListConvenience,
   ];
 }

app/lib/features/user/data/models/engine_settings.g.dart

@@ -69,6 +69,32 @@ abstract class _$EngineSettingsCWProxy {
 
   EngineSettings locales(List<String>? locales);
 
+  EngineSettings blockCookies(bool? blockCookies);
+
+  EngineSettings customCookiePolicy(CustomCookiePolicy? customCookiePolicy);
+
+  EngineSettings blockTrackingContent(bool? blockTrackingContent);
+
+  EngineSettings trackingContentScope(TrackingScope? trackingContentScope);
+
+  EngineSettings blockCryptominers(bool? blockCryptominers);
+
+  EngineSettings blockFingerprinters(bool? blockFingerprinters);
+
+  EngineSettings blockRedirectTrackers(bool? blockRedirectTrackers);
+
+  EngineSettings blockSuspectedFingerprinters(
+    bool? blockSuspectedFingerprinters,
+  );
+
+  EngineSettings suspectedFingerprintersScope(
+    TrackingScope? suspectedFingerprintersScope,
+  );
+
+  EngineSettings allowListBaseline(bool? allowListBaseline);
+
+  EngineSettings allowListConvenience(bool? allowListConvenience);
+
   /// Creates a new instance with the provided field values.
   /// Passing `null` to a nullable field nullifies it, while `null` for a non-nullable field is ignored. To update a single field use `EngineSettings(...).copyWith.fieldName(value)`.
   ///
@@ -99,6 +125,17 @@ abstract class _$EngineSettingsCWProxy {
     String? fingerprintingProtectionOverrides,
     bool enablePdfJs,
     List<String>? locales,
+    bool? blockCookies,
+    CustomCookiePolicy? customCookiePolicy,
+    bool? blockTrackingContent,
+    TrackingScope? trackingContentScope,
+    bool? blockCryptominers,
+    bool? blockFingerprinters,
+    bool? blockRedirectTrackers,
+    bool? blockSuspectedFingerprinters,
+    TrackingScope? suspectedFingerprintersScope,
+    bool? allowListBaseline,
+    bool? allowListConvenience,
   });
 }
 
@@ -213,6 +250,52 @@ class _$EngineSettingsCWProxyImpl implements _$EngineSettingsCWProxy {
   @override
   EngineSettings locales(List<String>? locales) => call(locales: locales);
 
+  @override
+  EngineSettings blockCookies(bool? blockCookies) =>
+      call(blockCookies: blockCookies);
+
+  @override
+  EngineSettings customCookiePolicy(CustomCookiePolicy? customCookiePolicy) =>
+      call(customCookiePolicy: customCookiePolicy);
+
+  @override
+  EngineSettings blockTrackingContent(bool? blockTrackingContent) =>
+      call(blockTrackingContent: blockTrackingContent);
+
+  @override
+  EngineSettings trackingContentScope(TrackingScope? trackingContentScope) =>
+      call(trackingContentScope: trackingContentScope);
+
+  @override
+  EngineSettings blockCryptominers(bool? blockCryptominers) =>
+      call(blockCryptominers: blockCryptominers);
+
+  @override
+  EngineSettings blockFingerprinters(bool? blockFingerprinters) =>
+      call(blockFingerprinters: blockFingerprinters);
+
+  @override
+  EngineSettings blockRedirectTrackers(bool? blockRedirectTrackers) =>
+      call(blockRedirectTrackers: blockRedirectTrackers);
+
+  @override
+  EngineSettings blockSuspectedFingerprinters(
+    bool? blockSuspectedFingerprinters,
+  ) => call(blockSuspectedFingerprinters: blockSuspectedFingerprinters);
+
+  @override
+  EngineSettings suspectedFingerprintersScope(
+    TrackingScope? suspectedFingerprintersScope,
+  ) => call(suspectedFingerprintersScope: suspectedFingerprintersScope);
+
+  @override
+  EngineSettings allowListBaseline(bool? allowListBaseline) =>
+      call(allowListBaseline: allowListBaseline);
+
+  @override
+  EngineSettings allowListConvenience(bool? allowListConvenience) =>
+      call(allowListConvenience: allowListConvenience);
+
   @override
   /// Creates a new instance with the provided field values.
   /// Passing `null` to a nullable field nullifies it, while `null` for a non-nullable field is ignored. To update a single field use `EngineSettings(...).copyWith.fieldName(value)`.
@@ -246,6 +329,17 @@ class _$EngineSettingsCWProxyImpl implements _$EngineSettingsCWProxy {
     Object? fingerprintingProtectionOverrides = const $CopyWithPlaceholder(),
     Object? enablePdfJs = const $CopyWithPlaceholder(),
     Object? locales = const $CopyWithPlaceholder(),
+    Object? blockCookies = const $CopyWithPlaceholder(),
+    Object? customCookiePolicy = const $CopyWithPlaceholder(),
+    Object? blockTrackingContent = const $CopyWithPlaceholder(),
+    Object? trackingContentScope = const $CopyWithPlaceholder(),
+    Object? blockCryptominers = const $CopyWithPlaceholder(),
+    Object? blockFingerprinters = const $CopyWithPlaceholder(),
+    Object? blockRedirectTrackers = const $CopyWithPlaceholder(),
+    Object? blockSuspectedFingerprinters = const $CopyWithPlaceholder(),
+    Object? suspectedFingerprintersScope = const $CopyWithPlaceholder(),
+    Object? allowListBaseline = const $CopyWithPlaceholder(),
+    Object? allowListConvenience = const $CopyWithPlaceholder(),
   }) {
     return EngineSettings(
       javascriptEnabled: javascriptEnabled == const $CopyWithPlaceholder()
@@ -361,6 +455,53 @@ class _$EngineSettingsCWProxyImpl implements _$EngineSettingsCWProxy {
           ? _value.locales
           // ignore: cast_nullable_to_non_nullable
           : locales as List<String>?,
+      blockCookies: blockCookies == const $CopyWithPlaceholder()
+          ? _value.blockCookies
+          // ignore: cast_nullable_to_non_nullable
+          : blockCookies as bool?,
+      customCookiePolicy: customCookiePolicy == const $CopyWithPlaceholder()
+          ? _value.customCookiePolicy
+          // ignore: cast_nullable_to_non_nullable
+          : customCookiePolicy as CustomCookiePolicy?,
+      blockTrackingContent: blockTrackingContent == const $CopyWithPlaceholder()
+          ? _value.blockTrackingContent
+          // ignore: cast_nullable_to_non_nullable
+          : blockTrackingContent as bool?,
+      trackingContentScope: trackingContentScope == const $CopyWithPlaceholder()
+          ? _value.trackingContentScope
+          // ignore: cast_nullable_to_non_nullable
+          : trackingContentScope as TrackingScope?,
+      blockCryptominers: blockCryptominers == const $CopyWithPlaceholder()
+          ? _value.blockCryptominers
+          // ignore: cast_nullable_to_non_nullable
+          : blockCryptominers as bool?,
+      blockFingerprinters: blockFingerprinters == const $CopyWithPlaceholder()
+          ? _value.blockFingerprinters
+          // ignore: cast_nullable_to_non_nullable
+          : blockFingerprinters as bool?,
+      blockRedirectTrackers:
+          blockRedirectTrackers == const $CopyWithPlaceholder()
+          ? _value.blockRedirectTrackers
+          // ignore: cast_nullable_to_non_nullable
+          : blockRedirectTrackers as bool?,
+      blockSuspectedFingerprinters:
+          blockSuspectedFingerprinters == const $CopyWithPlaceholder()
+          ? _value.blockSuspectedFingerprinters
+          // ignore: cast_nullable_to_non_nullable
+          : blockSuspectedFingerprinters as bool?,
+      suspectedFingerprintersScope:
+          suspectedFingerprintersScope == const $CopyWithPlaceholder()
+          ? _value.suspectedFingerprintersScope
+          // ignore: cast_nullable_to_non_nullable
+          : suspectedFingerprintersScope as TrackingScope?,
+      allowListBaseline: allowListBaseline == const $CopyWithPlaceholder()
+          ? _value.allowListBaseline
+          // ignore: cast_nullable_to_non_nullable
+          : allowListBaseline as bool?,
+      allowListConvenience: allowListConvenience == const $CopyWithPlaceholder()
+          ? _value.allowListConvenience
+          // ignore: cast_nullable_to_non_nullable
+          : allowListConvenience as bool?,
     );
   }
 }
@@ -436,6 +577,27 @@ EngineSettings _$EngineSettingsFromJson(Map<String, dynamic> json) =>
       locales: (json['locales'] as List<dynamic>?)
           ?.map((e) => e as String)
           .toList(),
+      blockCookies: json['blockCookies'] as bool?,
+      customCookiePolicy: $enumDecodeNullable(
+        _$CustomCookiePolicyEnumMap,
+        json['customCookiePolicy'],
+      ),
+      blockTrackingContent: json['blockTrackingContent'] as bool?,
+      trackingContentScope: $enumDecodeNullable(
+        _$TrackingScopeEnumMap,
+        json['trackingContentScope'],
+      ),
+      blockCryptominers: json['blockCryptominers'] as bool?,
+      blockFingerprinters: json['blockFingerprinters'] as bool?,
+      blockRedirectTrackers: json['blockRedirectTrackers'] as bool?,
+      blockSuspectedFingerprinters:
+          json['blockSuspectedFingerprinters'] as bool?,
+      suspectedFingerprintersScope: $enumDecodeNullable(
+        _$TrackingScopeEnumMap,
+        json['suspectedFingerprintersScope'],
+      ),
+      allowListBaseline: json['allowListBaseline'] as bool?,
+      allowListConvenience: json['allowListConvenience'] as bool?,
     );
 
 Map<String, dynamic> _$EngineSettingsToJson(
@@ -463,6 +625,20 @@ Map<String, dynamic> _$EngineSettingsToJson(
           .webContentIsolationStrategy]!,
   'enterpriseRootsEnabled': instance.enterpriseRootsEnabled,
   'locales': instance.locales,
+  'blockCookies': instance.blockCookies,
+  'customCookiePolicy':
+      _$CustomCookiePolicyEnumMap[instance.customCookiePolicy]!,
+  'blockTrackingContent': instance.blockTrackingContent,
+  'trackingContentScope':
+      _$TrackingScopeEnumMap[instance.trackingContentScope]!,
+  'blockCryptominers': instance.blockCryptominers,
+  'blockFingerprinters': instance.blockFingerprinters,
+  'blockRedirectTrackers': instance.blockRedirectTrackers,
+  'blockSuspectedFingerprinters': instance.blockSuspectedFingerprinters,
+  'suspectedFingerprintersScope':
+      _$TrackingScopeEnumMap[instance.suspectedFingerprintersScope]!,
+  'allowListBaseline': instance.allowListBaseline,
+  'allowListConvenience': instance.allowListConvenience,
   'queryParameterStripping':
       _$QueryParameterStrippingEnumMap[instance.queryParameterStripping]!,
   'bounceTrackingProtectionMode':
@@ -528,3 +704,16 @@ const _$DohSettingsModeEnumMap = {
   DohSettingsMode.max: 'max',
   DohSettingsMode.off: 'off',
 };
+
+const _$CustomCookiePolicyEnumMap = {
+  CustomCookiePolicy.totalProtection: 'totalProtection',
+  CustomCookiePolicy.crossSiteTrackers: 'crossSiteTrackers',
+  CustomCookiePolicy.unvisited: 'unvisited',
+  CustomCookiePolicy.thirdParty: 'thirdParty',
+  CustomCookiePolicy.allCookies: 'allCookies',
+};
+
+const _$TrackingScopeEnumMap = {
+  TrackingScope.all: 'all',
+  TrackingScope.privateOnly: 'privateOnly',
+};

app/lib/features/user/domain/repositories/engine_settings.dart

@@ -127,6 +127,47 @@ class EngineSettingsRepository extends _$EngineSettingsRepository {
       'locales': settings['locales']
           ?.readAs(DriftSqlType.string, db.typeMapping)
           .mapNotNull(jsonDecode),
+      // Custom Tracking Protection
+      'blockCookies': settings['blockCookies']?.readAs(
+        DriftSqlType.bool,
+        db.typeMapping,
+      ),
+      'customCookiePolicy': settings['customCookiePolicy']?.readAs(
+        DriftSqlType.string,
+        db.typeMapping,
+      ),
+      'blockTrackingContent': settings['blockTrackingContent']?.readAs(
+        DriftSqlType.bool,
+        db.typeMapping,
+      ),
+      'trackingContentScope': settings['trackingContentScope']?.readAs(
+        DriftSqlType.string,
+        db.typeMapping,
+      ),
+      'blockCryptominers': settings['blockCryptominers']?.readAs(
+        DriftSqlType.bool,
+        db.typeMapping,
+      ),
+      'blockFingerprinters': settings['blockFingerprinters']?.readAs(
+        DriftSqlType.bool,
+        db.typeMapping,
+      ),
+      'blockRedirectTrackers': settings['blockRedirectTrackers']?.readAs(
+        DriftSqlType.bool,
+        db.typeMapping,
+      ),
+      'blockSuspectedFingerprinters': settings['blockSuspectedFingerprinters']
+          ?.readAs(DriftSqlType.bool, db.typeMapping),
+      'suspectedFingerprintersScope': settings['suspectedFingerprintersScope']
+          ?.readAs(DriftSqlType.string, db.typeMapping),
+      'allowListBaseline': settings['allowListBaseline']?.readAs(
+        DriftSqlType.bool,
+        db.typeMapping,
+      ),
+      'allowListConvenience': settings['allowListConvenience']?.readAs(
+        DriftSqlType.bool,
+        db.typeMapping,
+      ),
     });
   }
 

app/lib/features/user/domain/repositories/engine_settings.g.dart

@@ -34,7 +34,7 @@ final class EngineSettingsRepositoryProvider
 }
 
 String _$engineSettingsRepositoryHash() =>
-    r'916abcd932fc3b3b1e060bc93a46c1a3a38bb984';
+    r'a3bcd3a82d251ce6fd0adc4922e512533d70a10a';
 
 abstract class _$EngineSettingsRepository
     extends $StreamNotifier<EngineSettings> {

packages/flutter_mozilla_components/android/src/main/kotlin/eu/weblibre/flutter_mozilla_components/api/GeckoEngineSettingsApiImpl.kt

@@ -9,15 +9,19 @@ package eu.weblibre.flutter_mozilla_components.api
 import eu.weblibre.flutter_mozilla_components.GlobalComponents
 import eu.weblibre.flutter_mozilla_components.pigeons.ColorScheme
 import eu.weblibre.flutter_mozilla_components.pigeons.CookieBannerHandlingMode
+import eu.weblibre.flutter_mozilla_components.pigeons.CustomCookiePolicy
 import eu.weblibre.flutter_mozilla_components.pigeons.DohSettingsMode
 import eu.weblibre.flutter_mozilla_components.pigeons.GeckoEngineSettings
 import eu.weblibre.flutter_mozilla_components.pigeons.GeckoEngineSettingsApi
 import eu.weblibre.flutter_mozilla_components.pigeons.HttpsOnlyMode
 import eu.weblibre.flutter_mozilla_components.pigeons.QueryParameterStripping
+import eu.weblibre.flutter_mozilla_components.pigeons.TrackingScope
 import eu.weblibre.flutter_mozilla_components.pigeons.WebContentIsolationStrategy
 import mozilla.components.concept.engine.Engine
 import mozilla.components.concept.engine.EngineSession
 import mozilla.components.concept.engine.EngineSession.TrackingProtectionPolicy
+import mozilla.components.concept.engine.EngineSession.TrackingProtectionPolicy.TrackingCategory
+import mozilla.components.concept.engine.EngineSession.TrackingProtectionPolicy.CookiePolicy
 import mozilla.components.concept.engine.mediaquery.PreferredColorScheme
 import mozilla.components.feature.addons.logger
 import mozilla.components.feature.session.SettingsUseCases
@@ -35,7 +39,14 @@ class GeckoEngineSettingsApiImpl : GeckoEngineSettingsApi {
         requireNotNull(GlobalComponents.components) { "Components not initialized" }
     }
 
-    private fun updateFingerprintingProtection(trackingProtectionPolicy: eu.weblibre.flutter_mozilla_components.pigeons.TrackingProtectionPolicy) {
+    /**
+     * Updates fingerprinting protection settings based on the tracking protection policy.
+     * For CUSTOM mode, uses the settings from GeckoEngineSettings to determine the behavior.
+     */
+    private fun updateFingerprintingProtection(
+        trackingProtectionPolicy: eu.weblibre.flutter_mozilla_components.pigeons.TrackingProtectionPolicy,
+        settings: GeckoEngineSettings? = null
+    ) {
         when(trackingProtectionPolicy) {
             eu.weblibre.flutter_mozilla_components.pigeons.TrackingProtectionPolicy.STRICT -> {
                 components.core.engineSettings.fingerprintingProtection = true
@@ -45,14 +56,90 @@ class GeckoEngineSettingsApiImpl : GeckoEngineSettingsApi {
                 components.core.engineSettings.fingerprintingProtection = false
                 components.core.engineSettings.fingerprintingProtectionPrivateBrowsing = true
             }
-            eu.weblibre.flutter_mozilla_components.pigeons.TrackingProtectionPolicy.CUSTOM -> TODO()
+            eu.weblibre.flutter_mozilla_components.pigeons.TrackingProtectionPolicy.CUSTOM -> {
+                // Handle suspected fingerprinters (separate from FINGERPRINTING category)
+                if (settings?.blockSuspectedFingerprinters == true) {
+                    when (settings.suspectedFingerprintersScope) {
+                        TrackingScope.ALL -> {
+                            components.core.engineSettings.fingerprintingProtection = true
+                            components.core.engineSettings.fingerprintingProtectionPrivateBrowsing = true
+                        }
+                        TrackingScope.PRIVATE_ONLY, null -> {
+                            components.core.engineSettings.fingerprintingProtection = false
+                            components.core.engineSettings.fingerprintingProtectionPrivateBrowsing = true
+                        }
+                    }
+                } else {
+                    components.core.engineSettings.fingerprintingProtection = false
+                    components.core.engineSettings.fingerprintingProtectionPrivateBrowsing = false
+                }
+            }
             eu.weblibre.flutter_mozilla_components.pigeons.TrackingProtectionPolicy.NONE -> {
                 components.core.engineSettings.fingerprintingProtection = false
-                components.core.engineSettings.fingerprintingProtectionPrivateBrowsing = true
+                components.core.engineSettings.fingerprintingProtectionPrivateBrowsing = false
             }
         }
     }
 
+    /**
+     * Creates a custom tracking protection policy based on user settings.
+     * Matches Fenix's implementation where AD, ANALYTICS, SOCIAL, and MOZILLA_SOCIAL
+     * are always blocked, while other categories are configurable.
+     */
+    private fun createCustomTrackingProtectionPolicy(settings: GeckoEngineSettings): TrackingProtectionPolicy {
+        // Always include these categories (not user-configurable, matches Fenix)
+        val categories = mutableListOf(
+            TrackingCategory.AD,
+            TrackingCategory.ANALYTICS,
+            TrackingCategory.SOCIAL,
+            TrackingCategory.MOZILLA_SOCIAL,
+        )
+
+        // Add configurable categories
+        if (settings.blockTrackingContent == true) {
+            categories.add(TrackingCategory.SCRIPTS_AND_SUB_RESOURCES)
+        }
+
+        if (settings.blockFingerprinters == true) {
+            categories.add(TrackingCategory.FINGERPRINTING)
+        }
+
+        if (settings.blockCryptominers == true) {
+            categories.add(TrackingCategory.CRYPTOMINING)
+        }
+
+        // Determine cookie policy
+        val cookiePolicy = if (settings.blockCookies != true) {
+            CookiePolicy.ACCEPT_ALL
+        } else {
+            when (settings.customCookiePolicy) {
+                CustomCookiePolicy.TOTAL_PROTECTION -> CookiePolicy.ACCEPT_FIRST_PARTY_AND_ISOLATE_OTHERS
+                CustomCookiePolicy.CROSS_SITE_TRACKERS -> CookiePolicy.ACCEPT_NON_TRACKERS
+                CustomCookiePolicy.UNVISITED -> CookiePolicy.ACCEPT_VISITED
+                CustomCookiePolicy.THIRD_PARTY -> CookiePolicy.ACCEPT_ONLY_FIRST_PARTY
+                CustomCookiePolicy.ALL_COOKIES -> CookiePolicy.ACCEPT_NONE
+                null -> CookiePolicy.ACCEPT_FIRST_PARTY_AND_ISOLATE_OTHERS // default
+            }
+        }
+
+        // Build policy
+        val policy = TrackingProtectionPolicy.select(
+            trackingCategories = categories.toTypedArray(),
+            cookiePolicy = cookiePolicy,
+            cookiePurging = settings.blockRedirectTrackers ?: true,
+            strictSocialTrackingProtection = settings.blockTrackingContent ?: true,
+            allowListBaselineTrackingProtection = settings.allowListBaseline ?: true,
+            allowListConvenienceTrackingProtection = settings.allowListConvenience ?: false,
+        )
+
+        // Apply scope for tracking content
+        return if (settings.trackingContentScope == TrackingScope.PRIVATE_ONLY) {
+            policy.forPrivateSessionsOnly()
+        } else {
+            policy
+        }
+    }
+
     override fun setDefaultSettings(settings: GeckoEngineSettings) {
         if(settings.javascriptEnabled != null) {
             components.core.engineSettings.javascriptEnabled = settings.javascriptEnabled;
@@ -62,10 +149,10 @@ class GeckoEngineSettingsApiImpl : GeckoEngineSettingsApi {
                 eu.weblibre.flutter_mozilla_components.pigeons.TrackingProtectionPolicy.NONE -> TrackingProtectionPolicy.none()
                 eu.weblibre.flutter_mozilla_components.pigeons.TrackingProtectionPolicy.RECOMMENDED -> TrackingProtectionPolicy.recommended()
                 eu.weblibre.flutter_mozilla_components.pigeons.TrackingProtectionPolicy.STRICT -> TrackingProtectionPolicy.strict()
-                eu.weblibre.flutter_mozilla_components.pigeons.TrackingProtectionPolicy.CUSTOM -> TODO()
+                eu.weblibre.flutter_mozilla_components.pigeons.TrackingProtectionPolicy.CUSTOM -> createCustomTrackingProtectionPolicy(settings)
             }
 
-            updateFingerprintingProtection(settings.trackingProtectionPolicy)
+            updateFingerprintingProtection(settings.trackingProtectionPolicy, settings)
         }
         if(settings.httpsOnlyMode != null) {
             components.core.engineSettings.httpsOnlyMode = when(settings.httpsOnlyMode) {
@@ -202,21 +289,10 @@ class GeckoEngineSettingsApiImpl : GeckoEngineSettingsApi {
             reloadSession = true
         }
         if(settings.contentBlocking != null) {
-            components.core.engine.settings.queryParameterStripping = when(settings.contentBlocking.queryParameterStripping) {
-                QueryParameterStripping.ENABLED -> true
-                QueryParameterStripping.DISABLED -> false
-                QueryParameterStripping.PRIVATE_ONLY -> false
-            }
-            components.core.engine.settings.queryParameterStrippingPrivateBrowsing = when(settings.contentBlocking.queryParameterStripping) {
-                QueryParameterStripping.ENABLED -> true
-                QueryParameterStripping.DISABLED -> false
-                QueryParameterStripping.PRIVATE_ONLY -> true
-            }
-            components.core.engine.settings.queryParameterStrippingAllowList = settings.contentBlocking.queryParameterStrippingAllowList
-            components.core.engine.settings.queryParameterStrippingStripList = settings.contentBlocking.queryParameterStrippingStripList
-
-            components.core.engine.settings
-
+            components.core.engine.settings.queryParameterStripping = components.core.engineSettings.queryParameterStripping
+            components.core.engine.settings.queryParameterStrippingPrivateBrowsing = components.core.engineSettings.queryParameterStrippingPrivateBrowsing
+            components.core.engine.settings.queryParameterStrippingAllowList = components.core.engineSettings.queryParameterStrippingAllowList
+            components.core.engine.settings.queryParameterStrippingStripList = components.core.engineSettings.queryParameterStrippingStripList
             reloadSession = true
         }
         if(settings.enterpriseRootsEnabled != null) {
@@ -224,18 +300,13 @@ class GeckoEngineSettingsApiImpl : GeckoEngineSettingsApi {
             reloadSession = true
         }
         if(settings.dohSettings != null) {
-            components.core.engine.settings.dohSettingsMode = when(settings.dohSettings.dohSettingsMode) {
-                DohSettingsMode.GECKO_DEFAULT -> Engine.DohSettingsMode.DEFAULT
-                DohSettingsMode.INCREASED -> Engine.DohSettingsMode.INCREASED
-                DohSettingsMode.MAX -> Engine.DohSettingsMode.MAX
-                DohSettingsMode.OFF -> Engine.DohSettingsMode.OFF
-            }
-            components.core.engine.settings.dohProviderUrl = settings.dohSettings.dohProviderUrl
-            components.core.engine.settings.dohDefaultProviderUrl = settings.dohSettings.dohDefaultProviderUrl
-            components.core.engine.settings.dohExceptionsList = settings.dohSettings.dohExceptionsList
+            components.core.engine.settings.dohSettingsMode = components.core.engineSettings.dohSettingsMode
+            components.core.engine.settings.dohProviderUrl = components.core.engineSettings.dohProviderUrl
+            components.core.engine.settings.dohDefaultProviderUrl = components.core.engineSettings.dohDefaultProviderUrl
+            components.core.engine.settings.dohExceptionsList = components.core.engineSettings.dohExceptionsList
         }
         if(settings.fingerprintingProtectionOverrides != null) {
-            components.core.engine.settings.fingerprintingProtectionOverrides = settings.fingerprintingProtectionOverrides
+            components.core.engine.settings.fingerprintingProtectionOverrides = components.core.engineSettings.fingerprintingProtectionOverrides
         }
 
         if(reloadSession) {

packages/flutter_mozilla_components/android/src/main/kotlin/eu/weblibre/flutter_mozilla_components/pigeons/Gecko.g.kt

@@ -334,6 +334,55 @@ enum class WebContentIsolationStrategy(val raw: Int) {
   }
 }
 
+/**
+ * Cookie blocking policy for Custom tracking protection mode.
+ * Note: These only apply when blockCookies is true.
+ */
+enum class CustomCookiePolicy(val raw: Int) {
+  /**
+   * Total Cookie Protection - Dynamic First-Party Isolation (dFPI)
+   * Most private option, isolates cookies per site
+   */
+  TOTAL_PROTECTION(0),
+  /**
+   * Block cross-site and social media tracker cookies
+   * Allows most cookies but blocks tracking cookies
+   */
+  CROSS_SITE_TRACKERS(1),
+  /**
+   * Block cookies from sites you haven't visited
+   * Balances privacy with functionality
+   */
+  UNVISITED(2),
+  /**
+   * Block all third-party cookies
+   * Only allows first-party cookies
+   */
+  THIRD_PARTY(3),
+  /** Block all cookies (may break many sites) */
+  ALL_COOKIES(4);
+
+  companion object {
+    fun ofRaw(raw: Int): CustomCookiePolicy? {
+      return values().firstOrNull { it.raw == raw }
+    }
+  }
+}
+
+/** Scope for applying tracking protection features */
+enum class TrackingScope(val raw: Int) {
+  /** Apply to all browsing (normal + private) */
+  ALL(0),
+  /** Apply only to private browsing tabs */
+  PRIVATE_ONLY(1);
+
+  companion object {
+    fun ofRaw(raw: Int): TrackingScope? {
+      return values().firstOrNull { it.raw == raw }
+    }
+  }
+}
+
 enum class DohSettingsMode(val raw: Int) {
   GECKO_DEFAULT(0),
   INCREASED(1),
@@ -1865,7 +1914,32 @@ data class GeckoEngineSettings (
   val enterpriseRootsEnabled: Boolean? = null,
   val dohSettings: DohSettings? = null,
   val fingerprintingProtectionOverrides: String? = null,
-  val locales: List<String>? = null
+  val locales: List<String>? = null,
+  /** Master toggle for cookie blocking in Custom mode */
+  val blockCookies: Boolean? = null,
+  /** Cookie policy selection (only applies when blockCookies is true) */
+  val customCookiePolicy: CustomCookiePolicy? = null,
+  /** Block tracking scripts and content */
+  val blockTrackingContent: Boolean? = null,
+  /** Scope for tracking content blocking */
+  val trackingContentScope: TrackingScope? = null,
+  /** Block cryptomining scripts */
+  val blockCryptominers: Boolean? = null,
+  /** Block known fingerprinters (FINGERPRINTING tracking category) */
+  val blockFingerprinters: Boolean? = null,
+  /** Block redirect trackers via cookie purging */
+  val blockRedirectTrackers: Boolean? = null,
+  /**
+   * Block suspected fingerprinters (separate from FINGERPRINTING category)
+   * Controls GeckoView's fingerprintingProtection settings
+   */
+  val blockSuspectedFingerprinters: Boolean? = null,
+  /** Scope for suspected fingerprinters blocking */
+  val suspectedFingerprintersScope: TrackingScope? = null,
+  /** Allow baseline tracking protection exceptions (prevents major site breakage) */
+  val allowListBaseline: Boolean? = null,
+  /** Allow convenience tracking protection exceptions (fixes minor issues) */
+  val allowListConvenience: Boolean? = null
 )
  {
   companion object {
@@ -1886,7 +1960,18 @@ data class GeckoEngineSettings (
       val dohSettings = pigeonVar_list[13] as DohSettings?
       val fingerprintingProtectionOverrides = pigeonVar_list[14] as String?
       val locales = pigeonVar_list[15] as List<String>?
-      return GeckoEngineSettings(javascriptEnabled, trackingProtectionPolicy, httpsOnlyMode, globalPrivacyControlEnabled, preferredColorScheme, cookieBannerHandlingMode, cookieBannerHandlingModePrivateBrowsing, cookieBannerHandlingGlobalRules, cookieBannerHandlingGlobalRulesSubFrames, webContentIsolationStrategy, userAgent, contentBlocking, enterpriseRootsEnabled, dohSettings, fingerprintingProtectionOverrides, locales)
+      val blockCookies = pigeonVar_list[16] as Boolean?
+      val customCookiePolicy = pigeonVar_list[17] as CustomCookiePolicy?
+      val blockTrackingContent = pigeonVar_list[18] as Boolean?
+      val trackingContentScope = pigeonVar_list[19] as TrackingScope?
+      val blockCryptominers = pigeonVar_list[20] as Boolean?
+      val blockFingerprinters = pigeonVar_list[21] as Boolean?
+      val blockRedirectTrackers = pigeonVar_list[22] as Boolean?
+      val blockSuspectedFingerprinters = pigeonVar_list[23] as Boolean?
+      val suspectedFingerprintersScope = pigeonVar_list[24] as TrackingScope?
+      val allowListBaseline = pigeonVar_list[25] as Boolean?
+      val allowListConvenience = pigeonVar_list[26] as Boolean?
+      return GeckoEngineSettings(javascriptEnabled, trackingProtectionPolicy, httpsOnlyMode, globalPrivacyControlEnabled, preferredColorScheme, cookieBannerHandlingMode, cookieBannerHandlingModePrivateBrowsing, cookieBannerHandlingGlobalRules, cookieBannerHandlingGlobalRulesSubFrames, webContentIsolationStrategy, userAgent, contentBlocking, enterpriseRootsEnabled, dohSettings, fingerprintingProtectionOverrides, locales, blockCookies, customCookiePolicy, blockTrackingContent, trackingContentScope, blockCryptominers, blockFingerprinters, blockRedirectTrackers, blockSuspectedFingerprinters, suspectedFingerprintersScope, allowListBaseline, allowListConvenience)
     }
   }
   fun toList(): List<Any?> {
@@ -1907,6 +1992,17 @@ data class GeckoEngineSettings (
       dohSettings,
       fingerprintingProtectionOverrides,
       locales,
+      blockCookies,
+      customCookiePolicy,
+      blockTrackingContent,
+      trackingContentScope,
+      blockCryptominers,
+      blockFingerprinters,
+      blockRedirectTrackers,
+      blockSuspectedFingerprinters,
+      suspectedFingerprintersScope,
+      allowListBaseline,
+      allowListConvenience,
     )
   }
   override fun equals(other: Any?): Boolean {
@@ -2945,330 +3041,340 @@ private open class GeckoPigeonCodec : StandardMessageCodec() {
       }
       145.toByte() -> {
         return (readValue(buffer) as Long?)?.let {
-          DohSettingsMode.ofRaw(it.toInt())
+          CustomCookiePolicy.ofRaw(it.toInt())
         }
       }
       146.toByte() -> {
         return (readValue(buffer) as Long?)?.let {
-          DownloadStatus.ofRaw(it.toInt())
+          TrackingScope.ofRaw(it.toInt())
         }
       }
       147.toByte() -> {
         return (readValue(buffer) as Long?)?.let {
-          LogLevel.ofRaw(it.toInt())
+          DohSettingsMode.ofRaw(it.toInt())
         }
       }
       148.toByte() -> {
         return (readValue(buffer) as Long?)?.let {
-          MlProgressType.ofRaw(it.toInt())
+          DownloadStatus.ofRaw(it.toInt())
         }
       }
       149.toByte() -> {
         return (readValue(buffer) as Long?)?.let {
-          MlProgressStatus.ofRaw(it.toInt())
+          LogLevel.ofRaw(it.toInt())
         }
       }
       150.toByte() -> {
         return (readValue(buffer) as Long?)?.let {
-          ClearDataType.ofRaw(it.toInt())
+          MlProgressType.ofRaw(it.toInt())
         }
       }
       151.toByte() -> {
         return (readValue(buffer) as Long?)?.let {
-          GeckoFetchMethod.ofRaw(it.toInt())
+          MlProgressStatus.ofRaw(it.toInt())
         }
       }
       152.toByte() -> {
         return (readValue(buffer) as Long?)?.let {
-          GeckoFetchRedircet.ofRaw(it.toInt())
+          ClearDataType.ofRaw(it.toInt())
         }
       }
       153.toByte() -> {
         return (readValue(buffer) as Long?)?.let {
-          GeckoFetchCookiePolicy.ofRaw(it.toInt())
+          GeckoFetchMethod.ofRaw(it.toInt())
         }
       }
       154.toByte() -> {
         return (readValue(buffer) as Long?)?.let {
-          BookmarkNodeType.ofRaw(it.toInt())
+          GeckoFetchRedircet.ofRaw(it.toInt())
         }
       }
       155.toByte() -> {
         return (readValue(buffer) as Long?)?.let {
-          SitePermissionStatus.ofRaw(it.toInt())
+          GeckoFetchCookiePolicy.ofRaw(it.toInt())
         }
       }
       156.toByte() -> {
         return (readValue(buffer) as Long?)?.let {
-          AutoplayStatus.ofRaw(it.toInt())
+          BookmarkNodeType.ofRaw(it.toInt())
         }
       }
       157.toByte() -> {
-        return (readValue(buffer) as? List<Any?>)?.let {
-          TranslationOptions.fromList(it)
+        return (readValue(buffer) as Long?)?.let {
+          SitePermissionStatus.ofRaw(it.toInt())
         }
       }
       158.toByte() -> {
-        return (readValue(buffer) as? List<Any?>)?.let {
-          ReaderState.fromList(it)
+        return (readValue(buffer) as Long?)?.let {
+          AutoplayStatus.ofRaw(it.toInt())
         }
       }
       159.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          AddTabParams.fromList(it)
+          TranslationOptions.fromList(it)
         }
       }
       160.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          LastMediaAccessState.fromList(it)
+          ReaderState.fromList(it)
         }
       }
       161.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          HistoryMetadataKey.fromList(it)
+          AddTabParams.fromList(it)
         }
       }
       162.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          PackageCategoryValue.fromList(it)
+          LastMediaAccessState.fromList(it)
         }
       }
       163.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          ExternalPackage.fromList(it)
+          HistoryMetadataKey.fromList(it)
         }
       }
       164.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          LoadUrlFlagsValue.fromList(it)
+          PackageCategoryValue.fromList(it)
         }
       }
       165.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          SourceValue.fromList(it)
+          ExternalPackage.fromList(it)
         }
       }
       166.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          TabState.fromList(it)
+          LoadUrlFlagsValue.fromList(it)
         }
       }
       167.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          RecoverableTab.fromList(it)
+          SourceValue.fromList(it)
         }
       }
       168.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          RecoverableBrowserState.fromList(it)
+          TabState.fromList(it)
         }
       }
       169.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          IconRequest.fromList(it)
+          RecoverableTab.fromList(it)
         }
       }
       170.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          ResourceSize.fromList(it)
+          RecoverableBrowserState.fromList(it)
         }
       }
       171.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          Resource.fromList(it)
+          IconRequest.fromList(it)
         }
       }
       172.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          IconResult.fromList(it)
+          ResourceSize.fromList(it)
         }
       }
       173.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          CookiePartitionKey.fromList(it)
+          Resource.fromList(it)
         }
       }
       174.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          Cookie.fromList(it)
+          IconResult.fromList(it)
         }
       }
       175.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          VisitInfo.fromList(it)
+          CookiePartitionKey.fromList(it)
         }
       }
       176.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          HistoryItem.fromList(it)
+          Cookie.fromList(it)
         }
       }
       177.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          HistoryState.fromList(it)
+          VisitInfo.fromList(it)
         }
       }
       178.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          ReaderableState.fromList(it)
+          HistoryItem.fromList(it)
         }
       }
       179.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          SecurityInfoState.fromList(it)
+          HistoryState.fromList(it)
         }
       }
       180.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          TabContentState.fromList(it)
+          ReaderableState.fromList(it)
         }
       }
       181.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          FindResultState.fromList(it)
+          SecurityInfoState.fromList(it)
         }
       }
       182.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          CustomSelectionAction.fromList(it)
+          TabContentState.fromList(it)
         }
       }
       183.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          WebExtensionData.fromList(it)
+          FindResultState.fromList(it)
         }
       }
       184.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          GeckoSuggestion.fromList(it)
+          CustomSelectionAction.fromList(it)
         }
       }
       185.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          TabContent.fromList(it)
+          WebExtensionData.fromList(it)
         }
       }
       186.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          ContentBlocking.fromList(it)
+          GeckoSuggestion.fromList(it)
         }
       }
       187.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          DohSettings.fromList(it)
+          TabContent.fromList(it)
         }
       }
       188.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          GeckoEngineSettings.fromList(it)
+          ContentBlocking.fromList(it)
         }
       }
       189.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          AutocompleteResult.fromList(it)
+          DohSettings.fromList(it)
         }
       }
       190.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          UnknownHitResult.fromList(it)
+          GeckoEngineSettings.fromList(it)
         }
       }
       191.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          ImageHitResult.fromList(it)
+          AutocompleteResult.fromList(it)
         }
       }
       192.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          VideoHitResult.fromList(it)
+          UnknownHitResult.fromList(it)
         }
       }
       193.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          AudioHitResult.fromList(it)
+          ImageHitResult.fromList(it)
         }
       }
       194.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          ImageSrcHitResult.fromList(it)
+          VideoHitResult.fromList(it)
         }
       }
       195.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          PhoneHitResult.fromList(it)
+          AudioHitResult.fromList(it)
         }
       }
       196.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          EmailHitResult.fromList(it)
+          ImageSrcHitResult.fromList(it)
         }
       }
       197.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          GeoHitResult.fromList(it)
+          PhoneHitResult.fromList(it)
         }
       }
       198.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          DownloadState.fromList(it)
+          EmailHitResult.fromList(it)
         }
       }
       199.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          ShareInternetResourceState.fromList(it)
+          GeoHitResult.fromList(it)
         }
       }
       200.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          AddonCollection.fromList(it)
+          DownloadState.fromList(it)
         }
       }
       201.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          GeckoPref.fromList(it)
+          ShareInternetResourceState.fromList(it)
         }
       }
       202.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          MlProgressData.fromList(it)
+          AddonCollection.fromList(it)
         }
       }
       203.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          ContainerSiteAssignment.fromList(it)
+          GeckoPref.fromList(it)
         }
       }
       204.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          GeckoHeader.fromList(it)
+          MlProgressData.fromList(it)
         }
       }
       205.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          GeckoFetchRequest.fromList(it)
+          ContainerSiteAssignment.fromList(it)
         }
       }
       206.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          GeckoFetchResponse.fromList(it)
+          GeckoHeader.fromList(it)
         }
       }
       207.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          BookmarkNode.fromList(it)
+          GeckoFetchRequest.fromList(it)
         }
       }
       208.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          BookmarkInfo.fromList(it)
+          GeckoFetchResponse.fromList(it)
         }
       }
       209.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
-          SitePermissions.fromList(it)
+          BookmarkNode.fromList(it)
         }
       }
       210.toByte() -> {
+        return (readValue(buffer) as? List<Any?>)?.let {
+          BookmarkInfo.fromList(it)
+        }
+      }
+      211.toByte() -> {
+        return (readValue(buffer) as? List<Any?>)?.let {
+          SitePermissions.fromList(it)
+        }
+      }
+      212.toByte() -> {
         return (readValue(buffer) as? List<Any?>)?.let {
           TrackingProtectionException.fromList(it)
         }
@@ -3342,270 +3448,278 @@ private open class GeckoPigeonCodec : StandardMessageCodec() {
         stream.write(144)
         writeValue(stream, value.raw.toLong())
       }
-      is DohSettingsMode -> {
+      is CustomCookiePolicy -> {
         stream.write(145)
         writeValue(stream, value.raw.toLong())
       }
-      is DownloadStatus -> {
+      is TrackingScope -> {
         stream.write(146)
         writeValue(stream, value.raw.toLong())
       }
-      is LogLevel -> {
+      is DohSettingsMode -> {
         stream.write(147)
         writeValue(stream, value.raw.toLong())
       }
-      is MlProgressType -> {
+      is DownloadStatus -> {
         stream.write(148)
         writeValue(stream, value.raw.toLong())
       }
-      is MlProgressStatus -> {
+      is LogLevel -> {
         stream.write(149)
         writeValue(stream, value.raw.toLong())
       }
-      is ClearDataType -> {
+      is MlProgressType -> {
         stream.write(150)
         writeValue(stream, value.raw.toLong())
       }
-      is GeckoFetchMethod -> {
+      is MlProgressStatus -> {
         stream.write(151)
         writeValue(stream, value.raw.toLong())
       }
-      is GeckoFetchRedircet -> {
+      is ClearDataType -> {
         stream.write(152)
         writeValue(stream, value.raw.toLong())
       }
-      is GeckoFetchCookiePolicy -> {
+      is GeckoFetchMethod -> {
         stream.write(153)
         writeValue(stream, value.raw.toLong())
       }
-      is BookmarkNodeType -> {
+      is GeckoFetchRedircet -> {
         stream.write(154)
         writeValue(stream, value.raw.toLong())
       }
-      is SitePermissionStatus -> {
+      is GeckoFetchCookiePolicy -> {
         stream.write(155)
         writeValue(stream, value.raw.toLong())
       }
-      is AutoplayStatus -> {
+      is BookmarkNodeType -> {
         stream.write(156)
         writeValue(stream, value.raw.toLong())
       }
-      is TranslationOptions -> {
+      is SitePermissionStatus -> {
         stream.write(157)
-        writeValue(stream, value.toList())
+        writeValue(stream, value.raw.toLong())
       }
-      is ReaderState -> {
+      is AutoplayStatus -> {
         stream.write(158)
-        writeValue(stream, value.toList())
+        writeValue(stream, value.raw.toLong())
       }
-      is AddTabParams -> {
+      is TranslationOptions -> {
         stream.write(159)
         writeValue(stream, value.toList())
       }
-      is LastMediaAccessState -> {
+      is ReaderState -> {
         stream.write(160)
         writeValue(stream, value.toList())
       }
-      is HistoryMetadataKey -> {
+      is AddTabParams -> {
         stream.write(161)
         writeValue(stream, value.toList())
       }
-      is PackageCategoryValue -> {
+      is LastMediaAccessState -> {
         stream.write(162)
         writeValue(stream, value.toList())
       }
-      is ExternalPackage -> {
+      is HistoryMetadataKey -> {
         stream.write(163)
         writeValue(stream, value.toList())
       }
-      is LoadUrlFlagsValue -> {
+      is PackageCategoryValue -> {
         stream.write(164)
         writeValue(stream, value.toList())
       }
-      is SourceValue -> {
+      is ExternalPackage -> {
         stream.write(165)
         writeValue(stream, value.toList())
       }
-      is TabState -> {
+      is LoadUrlFlagsValue -> {
         stream.write(166)
         writeValue(stream, value.toList())
       }
-      is RecoverableTab -> {
+      is SourceValue -> {
         stream.write(167)
         writeValue(stream, value.toList())
       }
-      is RecoverableBrowserState -> {
+      is TabState -> {
         stream.write(168)
         writeValue(stream, value.toList())
       }
-      is IconRequest -> {
+      is RecoverableTab -> {
         stream.write(169)
         writeValue(stream, value.toList())
       }
-      is ResourceSize -> {
+      is RecoverableBrowserState -> {
         stream.write(170)
         writeValue(stream, value.toList())
       }
-      is Resource -> {
+      is IconRequest -> {
         stream.write(171)
         writeValue(stream, value.toList())
       }
-      is IconResult -> {
+      is ResourceSize -> {
         stream.write(172)
         writeValue(stream, value.toList())
       }
-      is CookiePartitionKey -> {
+      is Resource -> {
         stream.write(173)
         writeValue(stream, value.toList())
       }
-      is Cookie -> {
+      is IconResult -> {
         stream.write(174)
         writeValue(stream, value.toList())
       }
-      is VisitInfo -> {
+      is CookiePartitionKey -> {
         stream.write(175)
         writeValue(stream, value.toList())
       }
-      is HistoryItem -> {
+      is Cookie -> {
         stream.write(176)
         writeValue(stream, value.toList())
       }
-      is HistoryState -> {
+      is VisitInfo -> {
         stream.write(177)
         writeValue(stream, value.toList())
       }
-      is ReaderableState -> {
+      is HistoryItem -> {
         stream.write(178)
         writeValue(stream, value.toList())
       }
-      is SecurityInfoState -> {
+      is HistoryState -> {
         stream.write(179)
         writeValue(stream, value.toList())
       }
-      is TabContentState -> {
+      is ReaderableState -> {
         stream.write(180)
         writeValue(stream, value.toList())
       }
-      is FindResultState -> {
+      is SecurityInfoState -> {
         stream.write(181)
         writeValue(stream, value.toList())
       }
-      is CustomSelectionAction -> {
+      is TabContentState -> {
         stream.write(182)
         writeValue(stream, value.toList())
       }
-      is WebExtensionData -> {
+      is FindResultState -> {
         stream.write(183)
         writeValue(stream, value.toList())
       }
-      is GeckoSuggestion -> {
+      is CustomSelectionAction -> {
         stream.write(184)
         writeValue(stream, value.toList())
       }
-      is TabContent -> {
+      is WebExtensionData -> {
         stream.write(185)
         writeValue(stream, value.toList())
       }
-      is ContentBlocking -> {
+      is GeckoSuggestion -> {
         stream.write(186)
         writeValue(stream, value.toList())
       }
-      is DohSettings -> {
+      is TabContent -> {
         stream.write(187)
         writeValue(stream, value.toList())
       }
-      is GeckoEngineSettings -> {
+      is ContentBlocking -> {
         stream.write(188)
         writeValue(stream, value.toList())
       }
-      is AutocompleteResult -> {
+      is DohSettings -> {
         stream.write(189)
         writeValue(stream, value.toList())
       }
-      is UnknownHitResult -> {
+      is GeckoEngineSettings -> {
         stream.write(190)
         writeValue(stream, value.toList())
       }
-      is ImageHitResult -> {
+      is AutocompleteResult -> {
         stream.write(191)
         writeValue(stream, value.toList())
       }
-      is VideoHitResult -> {
+      is UnknownHitResult -> {
         stream.write(192)
         writeValue(stream, value.toList())
       }
-      is AudioHitResult -> {
+      is ImageHitResult -> {
         stream.write(193)
         writeValue(stream, value.toList())
       }
-      is ImageSrcHitResult -> {
+      is VideoHitResult -> {
         stream.write(194)
         writeValue(stream, value.toList())
       }
-      is PhoneHitResult -> {
+      is AudioHitResult -> {
         stream.write(195)
         writeValue(stream, value.toList())
       }
-      is EmailHitResult -> {
+      is ImageSrcHitResult -> {
         stream.write(196)
         writeValue(stream, value.toList())
       }
-      is GeoHitResult -> {
+      is PhoneHitResult -> {
         stream.write(197)
         writeValue(stream, value.toList())
       }
-      is DownloadState -> {
+      is EmailHitResult -> {
         stream.write(198)
         writeValue(stream, value.toList())
       }
-      is ShareInternetResourceState -> {
+      is GeoHitResult -> {
         stream.write(199)
         writeValue(stream, value.toList())
       }
-      is AddonCollection -> {
+      is DownloadState -> {
         stream.write(200)
         writeValue(stream, value.toList())
       }
-      is GeckoPref -> {
+      is ShareInternetResourceState -> {
         stream.write(201)
         writeValue(stream, value.toList())
       }
-      is MlProgressData -> {
+      is AddonCollection -> {
         stream.write(202)
         writeValue(stream, value.toList())
       }
-      is ContainerSiteAssignment -> {
+      is GeckoPref -> {
         stream.write(203)
         writeValue(stream, value.toList())
       }
-      is GeckoHeader -> {
+      is MlProgressData -> {
         stream.write(204)
         writeValue(stream, value.toList())
       }
-      is GeckoFetchRequest -> {
+      is ContainerSiteAssignment -> {
         stream.write(205)
         writeValue(stream, value.toList())
       }
-      is GeckoFetchResponse -> {
+      is GeckoHeader -> {
         stream.write(206)
         writeValue(stream, value.toList())
       }
-      is BookmarkNode -> {
+      is GeckoFetchRequest -> {
         stream.write(207)
         writeValue(stream, value.toList())
       }
-      is BookmarkInfo -> {
+      is GeckoFetchResponse -> {
         stream.write(208)
         writeValue(stream, value.toList())
       }
-      is SitePermissions -> {
+      is BookmarkNode -> {
         stream.write(209)
         writeValue(stream, value.toList())
       }
-      is TrackingProtectionException -> {
+      is BookmarkInfo -> {
         stream.write(210)
         writeValue(stream, value.toList())
       }
+      is SitePermissions -> {
+        stream.write(211)
+        writeValue(stream, value.toList())
+      }
+      is TrackingProtectionException -> {
+        stream.write(212)
+        writeValue(stream, value.toList())
+      }
       else -> super.writeValue(stream, value)
     }
   }

packages/flutter_mozilla_components/lib/flutter_mozilla_components.dart

@@ -47,6 +47,7 @@ export 'src/pigeons/gecko.g.dart'
         ContentBlocking,
         CookieBannerHandlingMode,
         CookieSameSiteStatus,
+        CustomCookiePolicy,
         DohSettings,
         DohSettingsMode,
         EmailHitResult,
@@ -82,6 +83,7 @@ export 'src/pigeons/gecko.g.dart'
         TabContentState,
         TrackingProtectionException,
         TrackingProtectionPolicy,
+        TrackingScope,
         UnknownHitResult,
         VideoHitResult,
         VisitInfo,

packages/flutter_mozilla_components/lib/src/domain/services/gecko_engine_settings.dart

@@ -35,6 +35,40 @@ class GeckoEngineSettingsService {
     );
   }
 
+  /// Updates tracking protection policy with all custom settings.
+  /// Use this when in CUSTOM mode and any custom setting changes.
+  Future<void> customTrackingProtectionPolicy({
+    required TrackingProtectionPolicy trackingProtectionPolicy,
+    bool? blockCookies,
+    CustomCookiePolicy? customCookiePolicy,
+    bool? blockTrackingContent,
+    TrackingScope? trackingContentScope,
+    bool? blockCryptominers,
+    bool? blockFingerprinters,
+    bool? blockRedirectTrackers,
+    bool? blockSuspectedFingerprinters,
+    TrackingScope? suspectedFingerprintersScope,
+    bool? allowListBaseline,
+    bool? allowListConvenience,
+  }) {
+    return _api.updateRuntimeSettings(
+      GeckoEngineSettings(
+        trackingProtectionPolicy: trackingProtectionPolicy,
+        blockCookies: blockCookies,
+        customCookiePolicy: customCookiePolicy,
+        blockTrackingContent: blockTrackingContent,
+        trackingContentScope: trackingContentScope,
+        blockCryptominers: blockCryptominers,
+        blockFingerprinters: blockFingerprinters,
+        blockRedirectTrackers: blockRedirectTrackers,
+        blockSuspectedFingerprinters: blockSuspectedFingerprinters,
+        suspectedFingerprintersScope: suspectedFingerprintersScope,
+        allowListBaseline: allowListBaseline,
+        allowListConvenience: allowListConvenience,
+      ),
+    );
+  }
+
   Future<void> httpsOnlyMode(HttpsOnlyMode state) {
     return _api.updateRuntimeSettings(
       GeckoEngineSettings(httpsOnlyMode: state),

packages/flutter_mozilla_components/lib/src/pigeons/gecko.g.dart

@@ -186,6 +186,33 @@ enum WebContentIsolationStrategy {
   isolateHighValue,
 }
 
+/// Cookie blocking policy for Custom tracking protection mode.
+/// Note: These only apply when blockCookies is true.
+enum CustomCookiePolicy {
+  /// Total Cookie Protection - Dynamic First-Party Isolation (dFPI)
+  /// Most private option, isolates cookies per site
+  totalProtection,
+  /// Block cross-site and social media tracker cookies
+  /// Allows most cookies but blocks tracking cookies
+  crossSiteTrackers,
+  /// Block cookies from sites you haven't visited
+  /// Balances privacy with functionality
+  unvisited,
+  /// Block all third-party cookies
+  /// Only allows first-party cookies
+  thirdParty,
+  /// Block all cookies (may break many sites)
+  allCookies,
+}
+
+/// Scope for applying tracking protection features
+enum TrackingScope {
+  /// Apply to all browsing (normal + private)
+  all,
+  /// Apply only to private browsing tabs
+  privateOnly,
+}
+
 enum DohSettingsMode {
   geckoDefault,
   increased,
@@ -2203,6 +2230,17 @@ class GeckoEngineSettings {
     this.dohSettings,
     this.fingerprintingProtectionOverrides,
     this.locales,
+    this.blockCookies,
+    this.customCookiePolicy,
+    this.blockTrackingContent,
+    this.trackingContentScope,
+    this.blockCryptominers,
+    this.blockFingerprinters,
+    this.blockRedirectTrackers,
+    this.blockSuspectedFingerprinters,
+    this.suspectedFingerprintersScope,
+    this.allowListBaseline,
+    this.allowListConvenience,
   });
 
   bool? javascriptEnabled;
@@ -2237,6 +2275,40 @@ class GeckoEngineSettings {
 
   List<String>? locales;
 
+  /// Master toggle for cookie blocking in Custom mode
+  bool? blockCookies;
+
+  /// Cookie policy selection (only applies when blockCookies is true)
+  CustomCookiePolicy? customCookiePolicy;
+
+  /// Block tracking scripts and content
+  bool? blockTrackingContent;
+
+  /// Scope for tracking content blocking
+  TrackingScope? trackingContentScope;
+
+  /// Block cryptomining scripts
+  bool? blockCryptominers;
+
+  /// Block known fingerprinters (FINGERPRINTING tracking category)
+  bool? blockFingerprinters;
+
+  /// Block redirect trackers via cookie purging
+  bool? blockRedirectTrackers;
+
+  /// Block suspected fingerprinters (separate from FINGERPRINTING category)
+  /// Controls GeckoView's fingerprintingProtection settings
+  bool? blockSuspectedFingerprinters;
+
+  /// Scope for suspected fingerprinters blocking
+  TrackingScope? suspectedFingerprintersScope;
+
+  /// Allow baseline tracking protection exceptions (prevents major site breakage)
+  bool? allowListBaseline;
+
+  /// Allow convenience tracking protection exceptions (fixes minor issues)
+  bool? allowListConvenience;
+
   List<Object?> _toList() {
     return <Object?>[
       javascriptEnabled,
@@ -2255,6 +2327,17 @@ class GeckoEngineSettings {
       dohSettings,
       fingerprintingProtectionOverrides,
       locales,
+      blockCookies,
+      customCookiePolicy,
+      blockTrackingContent,
+      trackingContentScope,
+      blockCryptominers,
+      blockFingerprinters,
+      blockRedirectTrackers,
+      blockSuspectedFingerprinters,
+      suspectedFingerprintersScope,
+      allowListBaseline,
+      allowListConvenience,
     ];
   }
 
@@ -2280,6 +2363,17 @@ class GeckoEngineSettings {
       dohSettings: result[13] as DohSettings?,
       fingerprintingProtectionOverrides: result[14] as String?,
       locales: (result[15] as List<Object?>?)?.cast<String>(),
+      blockCookies: result[16] as bool?,
+      customCookiePolicy: result[17] as CustomCookiePolicy?,
+      blockTrackingContent: result[18] as bool?,
+      trackingContentScope: result[19] as TrackingScope?,
+      blockCryptominers: result[20] as bool?,
+      blockFingerprinters: result[21] as bool?,
+      blockRedirectTrackers: result[22] as bool?,
+      blockSuspectedFingerprinters: result[23] as bool?,
+      suspectedFingerprintersScope: result[24] as TrackingScope?,
+      allowListBaseline: result[25] as bool?,
+      allowListConvenience: result[26] as bool?,
     );
   }
 
@@ -3714,204 +3808,210 @@ class _PigeonCodec extends StandardMessageCodec {
     }    else if (value is WebContentIsolationStrategy) {
       buffer.putUint8(144);
       writeValue(buffer, value.index);
-    }    else if (value is DohSettingsMode) {
+    }    else if (value is CustomCookiePolicy) {
       buffer.putUint8(145);
       writeValue(buffer, value.index);
-    }    else if (value is DownloadStatus) {
+    }    else if (value is TrackingScope) {
       buffer.putUint8(146);
       writeValue(buffer, value.index);
-    }    else if (value is LogLevel) {
+    }    else if (value is DohSettingsMode) {
       buffer.putUint8(147);
       writeValue(buffer, value.index);
-    }    else if (value is MlProgressType) {
+    }    else if (value is DownloadStatus) {
       buffer.putUint8(148);
       writeValue(buffer, value.index);
-    }    else if (value is MlProgressStatus) {
+    }    else if (value is LogLevel) {
       buffer.putUint8(149);
       writeValue(buffer, value.index);
-    }    else if (value is ClearDataType) {
+    }    else if (value is MlProgressType) {
       buffer.putUint8(150);
       writeValue(buffer, value.index);
-    }    else if (value is GeckoFetchMethod) {
+    }    else if (value is MlProgressStatus) {
       buffer.putUint8(151);
       writeValue(buffer, value.index);
-    }    else if (value is GeckoFetchRedircet) {
+    }    else if (value is ClearDataType) {
       buffer.putUint8(152);
       writeValue(buffer, value.index);
-    }    else if (value is GeckoFetchCookiePolicy) {
+    }    else if (value is GeckoFetchMethod) {
       buffer.putUint8(153);
       writeValue(buffer, value.index);
-    }    else if (value is BookmarkNodeType) {
+    }    else if (value is GeckoFetchRedircet) {
       buffer.putUint8(154);
       writeValue(buffer, value.index);
-    }    else if (value is SitePermissionStatus) {
+    }    else if (value is GeckoFetchCookiePolicy) {
       buffer.putUint8(155);
       writeValue(buffer, value.index);
-    }    else if (value is AutoplayStatus) {
+    }    else if (value is BookmarkNodeType) {
       buffer.putUint8(156);
       writeValue(buffer, value.index);
-    }    else if (value is TranslationOptions) {
+    }    else if (value is SitePermissionStatus) {
       buffer.putUint8(157);
-      writeValue(buffer, value.encode());
-    }    else if (value is ReaderState) {
+      writeValue(buffer, value.index);
+    }    else if (value is AutoplayStatus) {
       buffer.putUint8(158);
-      writeValue(buffer, value.encode());
-    }    else if (value is AddTabParams) {
+      writeValue(buffer, value.index);
+    }    else if (value is TranslationOptions) {
       buffer.putUint8(159);
       writeValue(buffer, value.encode());
-    }    else if (value is LastMediaAccessState) {
+    }    else if (value is ReaderState) {
       buffer.putUint8(160);
       writeValue(buffer, value.encode());
-    }    else if (value is HistoryMetadataKey) {
+    }    else if (value is AddTabParams) {
       buffer.putUint8(161);
       writeValue(buffer, value.encode());
-    }    else if (value is PackageCategoryValue) {
+    }    else if (value is LastMediaAccessState) {
       buffer.putUint8(162);
       writeValue(buffer, value.encode());
-    }    else if (value is ExternalPackage) {
+    }    else if (value is HistoryMetadataKey) {
       buffer.putUint8(163);
       writeValue(buffer, value.encode());
-    }    else if (value is LoadUrlFlagsValue) {
+    }    else if (value is PackageCategoryValue) {
       buffer.putUint8(164);
       writeValue(buffer, value.encode());
-    }    else if (value is SourceValue) {
+    }    else if (value is ExternalPackage) {
       buffer.putUint8(165);
       writeValue(buffer, value.encode());
-    }    else if (value is TabState) {
+    }    else if (value is LoadUrlFlagsValue) {
       buffer.putUint8(166);
       writeValue(buffer, value.encode());
-    }    else if (value is RecoverableTab) {
+    }    else if (value is SourceValue) {
       buffer.putUint8(167);
       writeValue(buffer, value.encode());
-    }    else if (value is RecoverableBrowserState) {
+    }    else if (value is TabState) {
       buffer.putUint8(168);
       writeValue(buffer, value.encode());
-    }    else if (value is IconRequest) {
+    }    else if (value is RecoverableTab) {
       buffer.putUint8(169);
       writeValue(buffer, value.encode());
-    }    else if (value is ResourceSize) {
+    }    else if (value is RecoverableBrowserState) {
       buffer.putUint8(170);
       writeValue(buffer, value.encode());
-    }    else if (value is Resource) {
+    }    else if (value is IconRequest) {
       buffer.putUint8(171);
       writeValue(buffer, value.encode());
-    }    else if (value is IconResult) {
+    }    else if (value is ResourceSize) {
       buffer.putUint8(172);
       writeValue(buffer, value.encode());
-    }    else if (value is CookiePartitionKey) {
+    }    else if (value is Resource) {
       buffer.putUint8(173);
       writeValue(buffer, value.encode());
-    }    else if (value is Cookie) {
+    }    else if (value is IconResult) {
       buffer.putUint8(174);
       writeValue(buffer, value.encode());
-    }    else if (value is VisitInfo) {
+    }    else if (value is CookiePartitionKey) {
       buffer.putUint8(175);
       writeValue(buffer, value.encode());
-    }    else if (value is HistoryItem) {
+    }    else if (value is Cookie) {
       buffer.putUint8(176);
       writeValue(buffer, value.encode());
-    }    else if (value is HistoryState) {
+    }    else if (value is VisitInfo) {
       buffer.putUint8(177);
       writeValue(buffer, value.encode());
-    }    else if (value is ReaderableState) {
+    }    else if (value is HistoryItem) {
       buffer.putUint8(178);
       writeValue(buffer, value.encode());
-    }    else if (value is SecurityInfoState) {
+    }    else if (value is HistoryState) {
       buffer.putUint8(179);
       writeValue(buffer, value.encode());
-    }    else if (value is TabContentState) {
+    }    else if (value is ReaderableState) {
       buffer.putUint8(180);
       writeValue(buffer, value.encode());
-    }    else if (value is FindResultState) {
+    }    else if (value is SecurityInfoState) {
       buffer.putUint8(181);
       writeValue(buffer, value.encode());
-    }    else if (value is CustomSelectionAction) {
+    }    else if (value is TabContentState) {
       buffer.putUint8(182);
       writeValue(buffer, value.encode());
-    }    else if (value is WebExtensionData) {
+    }    else if (value is FindResultState) {
       buffer.putUint8(183);
       writeValue(buffer, value.encode());
-    }    else if (value is GeckoSuggestion) {
+    }    else if (value is CustomSelectionAction) {
       buffer.putUint8(184);
       writeValue(buffer, value.encode());
-    }    else if (value is TabContent) {
+    }    else if (value is WebExtensionData) {
       buffer.putUint8(185);
       writeValue(buffer, value.encode());
-    }    else if (value is ContentBlocking) {
+    }    else if (value is GeckoSuggestion) {
       buffer.putUint8(186);
       writeValue(buffer, value.encode());
-    }    else if (value is DohSettings) {
+    }    else if (value is TabContent) {
       buffer.putUint8(187);
       writeValue(buffer, value.encode());
-    }    else if (value is GeckoEngineSettings) {
+    }    else if (value is ContentBlocking) {
       buffer.putUint8(188);
       writeValue(buffer, value.encode());
-    }    else if (value is AutocompleteResult) {
+    }    else if (value is DohSettings) {
       buffer.putUint8(189);
       writeValue(buffer, value.encode());
-    }    else if (value is UnknownHitResult) {
+    }    else if (value is GeckoEngineSettings) {
       buffer.putUint8(190);
       writeValue(buffer, value.encode());
-    }    else if (value is ImageHitResult) {
+    }    else if (value is AutocompleteResult) {
       buffer.putUint8(191);
       writeValue(buffer, value.encode());
-    }    else if (value is VideoHitResult) {
+    }    else if (value is UnknownHitResult) {
       buffer.putUint8(192);
       writeValue(buffer, value.encode());
-    }    else if (value is AudioHitResult) {
+    }    else if (value is ImageHitResult) {
       buffer.putUint8(193);
       writeValue(buffer, value.encode());
-    }    else if (value is ImageSrcHitResult) {
+    }    else if (value is VideoHitResult) {
       buffer.putUint8(194);
       writeValue(buffer, value.encode());
-    }    else if (value is PhoneHitResult) {
+    }    else if (value is AudioHitResult) {
       buffer.putUint8(195);
       writeValue(buffer, value.encode());
-    }    else if (value is EmailHitResult) {
+    }    else if (value is ImageSrcHitResult) {
       buffer.putUint8(196);
       writeValue(buffer, value.encode());
-    }    else if (value is GeoHitResult) {
+    }    else if (value is PhoneHitResult) {
       buffer.putUint8(197);
       writeValue(buffer, value.encode());
-    }    else if (value is DownloadState) {
+    }    else if (value is EmailHitResult) {
       buffer.putUint8(198);
       writeValue(buffer, value.encode());
-    }    else if (value is ShareInternetResourceState) {
+    }    else if (value is GeoHitResult) {
       buffer.putUint8(199);
       writeValue(buffer, value.encode());
-    }    else if (value is AddonCollection) {
+    }    else if (value is DownloadState) {
       buffer.putUint8(200);
       writeValue(buffer, value.encode());
-    }    else if (value is GeckoPref) {
+    }    else if (value is ShareInternetResourceState) {
       buffer.putUint8(201);
       writeValue(buffer, value.encode());
-    }    else if (value is MlProgressData) {
+    }    else if (value is AddonCollection) {
       buffer.putUint8(202);
       writeValue(buffer, value.encode());
-    }    else if (value is ContainerSiteAssignment) {
+    }    else if (value is GeckoPref) {
       buffer.putUint8(203);
       writeValue(buffer, value.encode());
-    }    else if (value is GeckoHeader) {
+    }    else if (value is MlProgressData) {
       buffer.putUint8(204);
       writeValue(buffer, value.encode());
-    }    else if (value is GeckoFetchRequest) {
+    }    else if (value is ContainerSiteAssignment) {
       buffer.putUint8(205);
       writeValue(buffer, value.encode());
-    }    else if (value is GeckoFetchResponse) {
+    }    else if (value is GeckoHeader) {
       buffer.putUint8(206);
       writeValue(buffer, value.encode());
-    }    else if (value is BookmarkNode) {
+    }    else if (value is GeckoFetchRequest) {
       buffer.putUint8(207);
       writeValue(buffer, value.encode());
-    }    else if (value is BookmarkInfo) {
+    }    else if (value is GeckoFetchResponse) {
       buffer.putUint8(208);
       writeValue(buffer, value.encode());
-    }    else if (value is SitePermissions) {
+    }    else if (value is BookmarkNode) {
       buffer.putUint8(209);
       writeValue(buffer, value.encode());
-    }    else if (value is TrackingProtectionException) {
+    }    else if (value is BookmarkInfo) {
       buffer.putUint8(210);
       writeValue(buffer, value.encode());
+    }    else if (value is SitePermissions) {
+      buffer.putUint8(211);
+      writeValue(buffer, value.encode());
+    }    else if (value is TrackingProtectionException) {
+      buffer.putUint8(212);
+      writeValue(buffer, value.encode());
     } else {
       super.writeValue(buffer, value);
     }
@@ -3970,147 +4070,153 @@ class _PigeonCodec extends StandardMessageCodec {
         return value == null ? null : WebContentIsolationStrategy.values[value];
       case 145: 
         final value = readValue(buffer) as int?;
-        return value == null ? null : DohSettingsMode.values[value];
+        return value == null ? null : CustomCookiePolicy.values[value];
       case 146: 
         final value = readValue(buffer) as int?;
-        return value == null ? null : DownloadStatus.values[value];
+        return value == null ? null : TrackingScope.values[value];
       case 147: 
         final value = readValue(buffer) as int?;
-        return value == null ? null : LogLevel.values[value];
+        return value == null ? null : DohSettingsMode.values[value];
       case 148: 
         final value = readValue(buffer) as int?;
-        return value == null ? null : MlProgressType.values[value];
+        return value == null ? null : DownloadStatus.values[value];
       case 149: 
         final value = readValue(buffer) as int?;
-        return value == null ? null : MlProgressStatus.values[value];
+        return value == null ? null : LogLevel.values[value];
       case 150: 
         final value = readValue(buffer) as int?;
-        return value == null ? null : ClearDataType.values[value];
+        return value == null ? null : MlProgressType.values[value];
       case 151: 
         final value = readValue(buffer) as int?;
-        return value == null ? null : GeckoFetchMethod.values[value];
+        return value == null ? null : MlProgressStatus.values[value];
       case 152: 
         final value = readValue(buffer) as int?;
-        return value == null ? null : GeckoFetchRedircet.values[value];
+        return value == null ? null : ClearDataType.values[value];
       case 153: 
         final value = readValue(buffer) as int?;
-        return value == null ? null : GeckoFetchCookiePolicy.values[value];
+        return value == null ? null : GeckoFetchMethod.values[value];
       case 154: 
         final value = readValue(buffer) as int?;
-        return value == null ? null : BookmarkNodeType.values[value];
+        return value == null ? null : GeckoFetchRedircet.values[value];
       case 155: 
         final value = readValue(buffer) as int?;
-        return value == null ? null : SitePermissionStatus.values[value];
+        return value == null ? null : GeckoFetchCookiePolicy.values[value];
       case 156: 
         final value = readValue(buffer) as int?;
-        return value == null ? null : AutoplayStatus.values[value];
+        return value == null ? null : BookmarkNodeType.values[value];
       case 157: 
-        return TranslationOptions.decode(readValue(buffer)!);
+        final value = readValue(buffer) as int?;
+        return value == null ? null : SitePermissionStatus.values[value];
       case 158: 
-        return ReaderState.decode(readValue(buffer)!);
+        final value = readValue(buffer) as int?;
+        return value == null ? null : AutoplayStatus.values[value];
       case 159: 
-        return AddTabParams.decode(readValue(buffer)!);
+        return TranslationOptions.decode(readValue(buffer)!);
       case 160: 
-        return LastMediaAccessState.decode(readValue(buffer)!);
+        return ReaderState.decode(readValue(buffer)!);
       case 161: 
-        return HistoryMetadataKey.decode(readValue(buffer)!);
+        return AddTabParams.decode(readValue(buffer)!);
       case 162: 
-        return PackageCategoryValue.decode(readValue(buffer)!);
+        return LastMediaAccessState.decode(readValue(buffer)!);
       case 163: 
-        return ExternalPackage.decode(readValue(buffer)!);
+        return HistoryMetadataKey.decode(readValue(buffer)!);
       case 164: 
-        return LoadUrlFlagsValue.decode(readValue(buffer)!);
+        return PackageCategoryValue.decode(readValue(buffer)!);
       case 165: 
-        return SourceValue.decode(readValue(buffer)!);
+        return ExternalPackage.decode(readValue(buffer)!);
       case 166: 
-        return TabState.decode(readValue(buffer)!);
+        return LoadUrlFlagsValue.decode(readValue(buffer)!);
       case 167: 
-        return RecoverableTab.decode(readValue(buffer)!);
+        return SourceValue.decode(readValue(buffer)!);
       case 168: 
-        return RecoverableBrowserState.decode(readValue(buffer)!);
+        return TabState.decode(readValue(buffer)!);
       case 169: 
-        return IconRequest.decode(readValue(buffer)!);
+        return RecoverableTab.decode(readValue(buffer)!);
       case 170: 
-        return ResourceSize.decode(readValue(buffer)!);
+        return RecoverableBrowserState.decode(readValue(buffer)!);
       case 171: 
-        return Resource.decode(readValue(buffer)!);
+        return IconRequest.decode(readValue(buffer)!);
       case 172: 
-        return IconResult.decode(readValue(buffer)!);
+        return ResourceSize.decode(readValue(buffer)!);
       case 173: 
-        return CookiePartitionKey.decode(readValue(buffer)!);
+        return Resource.decode(readValue(buffer)!);
       case 174: 
-        return Cookie.decode(readValue(buffer)!);
+        return IconResult.decode(readValue(buffer)!);
       case 175: 
-        return VisitInfo.decode(readValue(buffer)!);
+        return CookiePartitionKey.decode(readValue(buffer)!);
       case 176: 
-        return HistoryItem.decode(readValue(buffer)!);
+        return Cookie.decode(readValue(buffer)!);
       case 177: 
-        return HistoryState.decode(readValue(buffer)!);
+        return VisitInfo.decode(readValue(buffer)!);
       case 178: 
-        return ReaderableState.decode(readValue(buffer)!);
+        return HistoryItem.decode(readValue(buffer)!);
       case 179: 
-        return SecurityInfoState.decode(readValue(buffer)!);
+        return HistoryState.decode(readValue(buffer)!);
       case 180: 
-        return TabContentState.decode(readValue(buffer)!);
+        return ReaderableState.decode(readValue(buffer)!);
       case 181: 
-        return FindResultState.decode(readValue(buffer)!);
+        return SecurityInfoState.decode(readValue(buffer)!);
       case 182: 
-        return CustomSelectionAction.decode(readValue(buffer)!);
+        return TabContentState.decode(readValue(buffer)!);
       case 183: 
-        return WebExtensionData.decode(readValue(buffer)!);
+        return FindResultState.decode(readValue(buffer)!);
       case 184: 
-        return GeckoSuggestion.decode(readValue(buffer)!);
+        return CustomSelectionAction.decode(readValue(buffer)!);
       case 185: 
-        return TabContent.decode(readValue(buffer)!);
+        return WebExtensionData.decode(readValue(buffer)!);
       case 186: 
-        return ContentBlocking.decode(readValue(buffer)!);
+        return GeckoSuggestion.decode(readValue(buffer)!);
       case 187: 
-        return DohSettings.decode(readValue(buffer)!);
+        return TabContent.decode(readValue(buffer)!);
       case 188: 
-        return GeckoEngineSettings.decode(readValue(buffer)!);
+        return ContentBlocking.decode(readValue(buffer)!);
       case 189: 
-        return AutocompleteResult.decode(readValue(buffer)!);
+        return DohSettings.decode(readValue(buffer)!);
       case 190: 
-        return UnknownHitResult.decode(readValue(buffer)!);
+        return GeckoEngineSettings.decode(readValue(buffer)!);
       case 191: 
-        return ImageHitResult.decode(readValue(buffer)!);
+        return AutocompleteResult.decode(readValue(buffer)!);
       case 192: 
-        return VideoHitResult.decode(readValue(buffer)!);
+        return UnknownHitResult.decode(readValue(buffer)!);
       case 193: 
-        return AudioHitResult.decode(readValue(buffer)!);
+        return ImageHitResult.decode(readValue(buffer)!);
       case 194: 
-        return ImageSrcHitResult.decode(readValue(buffer)!);
+        return VideoHitResult.decode(readValue(buffer)!);
       case 195: 
-        return PhoneHitResult.decode(readValue(buffer)!);
+        return AudioHitResult.decode(readValue(buffer)!);
       case 196: 
-        return EmailHitResult.decode(readValue(buffer)!);
+        return ImageSrcHitResult.decode(readValue(buffer)!);
       case 197: 
-        return GeoHitResult.decode(readValue(buffer)!);
+        return PhoneHitResult.decode(readValue(buffer)!);
       case 198: 
-        return DownloadState.decode(readValue(buffer)!);
+        return EmailHitResult.decode(readValue(buffer)!);
       case 199: 
-        return ShareInternetResourceState.decode(readValue(buffer)!);
+        return GeoHitResult.decode(readValue(buffer)!);
       case 200: 
-        return AddonCollection.decode(readValue(buffer)!);
+        return DownloadState.decode(readValue(buffer)!);
       case 201: 
-        return GeckoPref.decode(readValue(buffer)!);
+        return ShareInternetResourceState.decode(readValue(buffer)!);
       case 202: 
-        return MlProgressData.decode(readValue(buffer)!);
+        return AddonCollection.decode(readValue(buffer)!);
       case 203: 
-        return ContainerSiteAssignment.decode(readValue(buffer)!);
+        return GeckoPref.decode(readValue(buffer)!);
       case 204: 
-        return GeckoHeader.decode(readValue(buffer)!);
+        return MlProgressData.decode(readValue(buffer)!);
       case 205: 
-        return GeckoFetchRequest.decode(readValue(buffer)!);
+        return ContainerSiteAssignment.decode(readValue(buffer)!);
       case 206: 
-        return GeckoFetchResponse.decode(readValue(buffer)!);
+        return GeckoHeader.decode(readValue(buffer)!);
       case 207: 
-        return BookmarkNode.decode(readValue(buffer)!);
+        return GeckoFetchRequest.decode(readValue(buffer)!);
       case 208: 
-        return BookmarkInfo.decode(readValue(buffer)!);
+        return GeckoFetchResponse.decode(readValue(buffer)!);
       case 209: 
-        return SitePermissions.decode(readValue(buffer)!);
+        return BookmarkNode.decode(readValue(buffer)!);
       case 210: 
+        return BookmarkInfo.decode(readValue(buffer)!);
+      case 211: 
+        return SitePermissions.decode(readValue(buffer)!);
+      case 212: 
         return TrackingProtectionException.decode(readValue(buffer)!);
       default:
         return super.readValueOfType(type, buffer);

packages/flutter_mozilla_components/pigeons/gecko.dart

@@ -646,6 +646,38 @@ enum WebContentIsolationStrategy {
   isolateHighValue,
 }
 
+/// Cookie blocking policy for Custom tracking protection mode.
+/// Note: These only apply when blockCookies is true.
+enum CustomCookiePolicy {
+  /// Total Cookie Protection - Dynamic First-Party Isolation (dFPI)
+  /// Most private option, isolates cookies per site
+  totalProtection,
+
+  /// Block cross-site and social media tracker cookies
+  /// Allows most cookies but blocks tracking cookies
+  crossSiteTrackers,
+
+  /// Block cookies from sites you haven't visited
+  /// Balances privacy with functionality
+  unvisited,
+
+  /// Block all third-party cookies
+  /// Only allows first-party cookies
+  thirdParty,
+
+  /// Block all cookies (may break many sites)
+  allCookies,
+}
+
+/// Scope for applying tracking protection features
+enum TrackingScope {
+  /// Apply to all browsing (normal + private)
+  all,
+
+  /// Apply only to private browsing tabs
+  privateOnly,
+}
+
 class ContentBlocking {
   QueryParameterStripping queryParameterStripping;
   String queryParameterStrippingAllowList;
@@ -694,6 +726,41 @@ class GeckoEngineSettings {
   final String? fingerprintingProtectionOverrides;
   final List<String>? locales;
 
+  // Custom Tracking Protection Settings
+  /// Master toggle for cookie blocking in Custom mode
+  final bool? blockCookies;
+
+  /// Cookie policy selection (only applies when blockCookies is true)
+  final CustomCookiePolicy? customCookiePolicy;
+
+  /// Block tracking scripts and content
+  final bool? blockTrackingContent;
+
+  /// Scope for tracking content blocking
+  final TrackingScope? trackingContentScope;
+
+  /// Block cryptomining scripts
+  final bool? blockCryptominers;
+
+  /// Block known fingerprinters (FINGERPRINTING tracking category)
+  final bool? blockFingerprinters;
+
+  /// Block redirect trackers via cookie purging
+  final bool? blockRedirectTrackers;
+
+  /// Block suspected fingerprinters (separate from FINGERPRINTING category)
+  /// Controls GeckoView's fingerprintingProtection settings
+  final bool? blockSuspectedFingerprinters;
+
+  /// Scope for suspected fingerprinters blocking
+  final TrackingScope? suspectedFingerprintersScope;
+
+  /// Allow baseline tracking protection exceptions (prevents major site breakage)
+  final bool? allowListBaseline;
+
+  /// Allow convenience tracking protection exceptions (fixes minor issues)
+  final bool? allowListConvenience;
+
   GeckoEngineSettings(
     this.javascriptEnabled,
     this.trackingProtectionPolicy,
@@ -711,6 +778,17 @@ class GeckoEngineSettings {
     this.dohSettings,
     this.fingerprintingProtectionOverrides,
     this.locales,
+    this.blockCookies,
+    this.customCookiePolicy,
+    this.blockTrackingContent,
+    this.trackingContentScope,
+    this.blockCryptominers,
+    this.blockFingerprinters,
+    this.blockRedirectTrackers,
+    this.blockSuspectedFingerprinters,
+    this.suspectedFingerprintersScope,
+    this.allowListBaseline,
+    this.allowListConvenience,
   );
 }