diff --git a/app/lib/app_init.dart b/app/lib/app_init.dart
index 1f72564d..11b6a521 100644
--- a/app/lib/app_init.dart
+++ b/app/lib/app_init.dart
@@ -22,6 +22,9 @@ import 'package:nc_photos/entity/nc_album/data_source.dart';
 import 'package:nc_photos/entity/nc_album/repo.dart';
 import 'package:nc_photos/entity/person.dart';
 import 'package:nc_photos/entity/person/data_source.dart';
+import 'package:nc_photos/entity/pref.dart';
+import 'package:nc_photos/entity/pref/provider/shared_preferences.dart';
+import 'package:nc_photos/entity/pref_util.dart' as pref_util;
 import 'package:nc_photos/entity/search.dart';
 import 'package:nc_photos/entity/search/data_source.dart';
 import 'package:nc_photos/entity/share.dart';
@@ -42,8 +45,6 @@ import 'package:nc_photos/mobile/platform.dart'
 import 'package:nc_photos/mobile/self_signed_cert_manager.dart';
 import 'package:nc_photos/platform/features.dart' as features;
 import 'package:nc_photos/platform/k.dart' as platform_k;
-import 'package:nc_photos/pref.dart';
-import 'package:nc_photos/pref_util.dart' as pref_util;
 import 'package:nc_photos/touch_manager.dart';
 import 'package:visibility_detector/visibility_detector.dart';
 
diff --git a/app/lib/bloc/scan_account_dir.dart b/app/lib/bloc/scan_account_dir.dart
index 370ec169..9029c7cc 100644
--- a/app/lib/bloc/scan_account_dir.dart
+++ b/app/lib/bloc/scan_account_dir.dart
@@ -12,11 +12,11 @@ import 'package:nc_photos/di_container.dart';
 import 'package:nc_photos/entity/file.dart';
 import 'package:nc_photos/entity/file_descriptor.dart';
 import 'package:nc_photos/entity/file_util.dart' as file_util;
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/event/event.dart';
 import 'package:nc_photos/event/native_event.dart';
 import 'package:nc_photos/exception.dart';
 import 'package:nc_photos/platform/k.dart' as platform_k;
-import 'package:nc_photos/pref.dart';
 import 'package:nc_photos/progress_util.dart';
 import 'package:nc_photos/throttler.dart';
 import 'package:nc_photos/use_case/ls.dart';
diff --git a/app/lib/controller/account_pref_controller.dart b/app/lib/controller/account_pref_controller.dart
index edcdf24f..6ed8a009 100644
--- a/app/lib/controller/account_pref_controller.dart
+++ b/app/lib/controller/account_pref_controller.dart
@@ -1,6 +1,6 @@
 import 'package:logging/logging.dart';
 import 'package:nc_photos/account.dart';
-import 'package:nc_photos/pref.dart';
+import 'package:nc_photos/entity/pref.dart';
 import 'package:np_codegen/np_codegen.dart';
 import 'package:rxdart/rxdart.dart';
 
diff --git a/app/lib/controller/pref_controller.dart b/app/lib/controller/pref_controller.dart
index 39d1646c..428e2fe3 100644
--- a/app/lib/controller/pref_controller.dart
+++ b/app/lib/controller/pref_controller.dart
@@ -1,5 +1,6 @@
 import 'package:logging/logging.dart';
 import 'package:nc_photos/di_container.dart';
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/language_util.dart' as language_util;
 import 'package:nc_photos/lazy.dart';
 import 'package:np_codegen/np_codegen.dart';
diff --git a/app/lib/di_container.dart b/app/lib/di_container.dart
index e2fcc408..cbb6b1e0 100644
--- a/app/lib/di_container.dart
+++ b/app/lib/di_container.dart
@@ -6,6 +6,7 @@ import 'package:nc_photos/entity/file.dart';
 import 'package:nc_photos/entity/local_file.dart';
 import 'package:nc_photos/entity/nc_album/repo.dart';
 import 'package:nc_photos/entity/person.dart';
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/entity/search.dart';
 import 'package:nc_photos/entity/share.dart';
 import 'package:nc_photos/entity/sharee.dart';
@@ -13,7 +14,6 @@ import 'package:nc_photos/entity/sqlite/database.dart' as sql;
 import 'package:nc_photos/entity/tag.dart';
 import 'package:nc_photos/entity/tagged_file.dart';
 import 'package:nc_photos/or_null.dart';
-import 'package:nc_photos/pref.dart';
 import 'package:nc_photos/touch_manager.dart';
 
 enum DiType {
diff --git a/app/lib/entity/collection/adapter/memory.dart b/app/lib/entity/collection/adapter/memory.dart
index eea3948f..c43c1a3b 100644
--- a/app/lib/entity/collection/adapter/memory.dart
+++ b/app/lib/entity/collection/adapter/memory.dart
@@ -8,6 +8,7 @@ import 'package:nc_photos/entity/collection_item.dart';
 import 'package:nc_photos/entity/collection_item/basic_item.dart';
 import 'package:nc_photos/entity/file/data_source.dart';
 import 'package:nc_photos/entity/file_util.dart' as file_util;
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/use_case/list_location_file.dart';
 
 class CollectionMemoryAdapter
diff --git a/app/lib/entity/pref.dart b/app/lib/entity/pref.dart
new file mode 100644
index 00000000..1f7f2fc7
--- /dev/null
+++ b/app/lib/entity/pref.dart
@@ -0,0 +1,301 @@
+import 'dart:async';
+import 'dart:convert';
+
+import 'package:collection/collection.dart';
+import 'package:event_bus/event_bus.dart';
+import 'package:kiwi/kiwi.dart';
+import 'package:logging/logging.dart';
+import 'package:nc_photos/account.dart';
+import 'package:nc_photos/entity/pref/provider/memory.dart';
+import 'package:nc_photos/event/event.dart';
+import 'package:np_codegen/np_codegen.dart';
+
+part 'pref.g.dart';
+part 'pref/extension.dart';
+
+@npLog
+class Pref {
+  factory Pref() {
+    _inst ??= Pref.scoped(PrefMemoryProvider());
+    return _inst!;
+  }
+
+  Pref.scoped(this.provider);
+
+  /// Set the global [Pref] instance returned by the default constructor
+  static void setGlobalInstance(Pref pref) {
+    assert(_inst == null);
+    _inst = pref;
+  }
+
+  Future<bool> _set<T>(PrefKey key, T value,
+      Future<bool> Function(PrefKey key, T value) setFn) async {
+    if (await setFn(key, value)) {
+      KiwiContainer().resolve<EventBus>().fire(PrefUpdatedEvent(key, value));
+      return true;
+    } else {
+      return false;
+    }
+  }
+
+  Future<bool> _remove(PrefKey key) => provider.remove(key);
+
+  final PrefProvider provider;
+
+  static Pref? _inst;
+}
+
+class AccountPref {
+  AccountPref.scoped(this.provider);
+
+  static AccountPref of(Account account) {
+    _insts.putIfAbsent(
+        account.id, () => AccountPref.scoped(PrefMemoryProvider()));
+    return _insts[account.id]!;
+  }
+
+  /// Set the global [AccountPref] instance returned by the default constructor
+  static void setGlobalInstance(Account account, AccountPref? pref) {
+    if (pref != null) {
+      assert(!_insts.containsKey(account.id));
+      _insts[account.id] = pref;
+    } else {
+      assert(_insts.containsKey(account.id));
+      _insts.remove(account.id);
+    }
+  }
+
+  bool? isEnableFaceRecognitionApp() =>
+      provider.getBool(PrefKey.isEnableFaceRecognitionApp);
+  bool isEnableFaceRecognitionAppOr([bool def = true]) =>
+      isEnableFaceRecognitionApp() ?? def;
+  Future<bool> setEnableFaceRecognitionApp(bool value) => _set<bool>(
+      PrefKey.isEnableFaceRecognitionApp,
+      value,
+      (key, value) => provider.setBool(key, value));
+
+  String? getShareFolder() => provider.getString(PrefKey.shareFolder);
+  String getShareFolderOr([String def = ""]) => getShareFolder() ?? def;
+  Future<bool> setShareFolder(String value) => _set<String>(PrefKey.shareFolder,
+      value, (key, value) => provider.setString(key, value));
+
+  bool? hasNewSharedAlbum() => provider.getBool(PrefKey.hasNewSharedAlbum);
+  bool hasNewSharedAlbumOr([bool def = false]) => hasNewSharedAlbum() ?? def;
+  Future<bool> setNewSharedAlbum(bool value) => _set<bool>(
+      PrefKey.hasNewSharedAlbum,
+      value,
+      (key, value) => provider.setBool(key, value));
+
+  bool? isEnableMemoryAlbum() => provider.getBool(PrefKey.isEnableMemoryAlbum);
+  bool isEnableMemoryAlbumOr([bool def = false]) =>
+      isEnableMemoryAlbum() ?? def;
+  Future<bool> setEnableMemoryAlbum(bool value) => _set<bool>(
+      PrefKey.isEnableMemoryAlbum,
+      value,
+      (key, value) => provider.setBool(key, value));
+
+  String? getTouchRootEtag() => provider.getString(PrefKey.touchRootEtag);
+  String getTouchRootEtagOr([String def = ""]) => getTouchRootEtag() ?? def;
+  Future<bool> setTouchRootEtag(String value) => _set<String>(
+      PrefKey.touchRootEtag,
+      value,
+      (key, value) => provider.setString(key, value));
+  Future<bool> removeTouchRootEtag() => _remove(PrefKey.touchRootEtag);
+
+  String? getAccountLabel() => provider.getString(PrefKey.accountLabel);
+  String getAccountLabelOr([String def = ""]) => getAccountLabel() ?? def;
+  Future<bool> setAccountLabel(String? value) {
+    if (value == null) {
+      return _remove(PrefKey.accountLabel);
+    } else {
+      return _set<String>(PrefKey.accountLabel, value,
+          (key, value) => provider.setString(key, value));
+    }
+  }
+
+  int? getLastNewCollectionType() =>
+      provider.getInt(PrefKey.lastNewCollectionType);
+  int getLastNewCollectionTypeOr(int def) => getLastNewCollectionType() ?? def;
+  Future<bool> setLastNewCollectionType(int? value) {
+    if (value == null) {
+      return _remove(PrefKey.lastNewCollectionType);
+    } else {
+      return _set<int>(PrefKey.lastNewCollectionType, value,
+          (key, value) => provider.setInt(key, value));
+    }
+  }
+
+  Future<bool> _set<T>(PrefKey key, T value,
+      Future<bool> Function(PrefKey key, T value) setFn) async {
+    if (await setFn(key, value)) {
+      KiwiContainer()
+          .resolve<EventBus>()
+          .fire(AccountPrefUpdatedEvent(this, key, value));
+      return true;
+    } else {
+      return false;
+    }
+  }
+
+  Future<bool> _remove(PrefKey key) => provider.remove(key);
+
+  final PrefProvider provider;
+
+  static final _insts = <String, AccountPref>{};
+}
+
+enum PrefKey {
+  accounts3,
+  currentAccountIndex,
+  homePhotosZoomLevel,
+  albumBrowserZoomLevel,
+  homeAlbumsSort,
+  enableExif,
+  viewerScreenBrightness,
+  viewerForceRotation,
+  setupProgress,
+  lastVersion,
+  darkTheme,
+  followSystemTheme,
+  useBlackInDarkTheme,
+  language,
+  labEnableSharedAlbum,
+  slideshowDuration,
+  isSlideshowShuffle,
+  isSlideshowRepeat,
+  isAlbumBrowserShowDate,
+  gpsMapProvider,
+  hasShownSharedAlbumInfo,
+  enhanceMaxWidth,
+  enhanceMaxHeight,
+  hasShownEnhanceInfo,
+  firstRunTime,
+  isPhotosTabSortByName,
+  shouldProcessExifWifiOnly,
+  doubleTapExit,
+  memoriesRange,
+  saveEditResultToServer,
+  hasShownSaveEditResultDialog,
+  isSlideshowReverse,
+  seedColor,
+  isVideoPlayerMute,
+  isVideoPlayerLoop,
+
+  // account pref
+  isEnableFaceRecognitionApp,
+  shareFolder,
+  hasNewSharedAlbum,
+  isEnableMemoryAlbum,
+  touchRootEtag,
+  accountLabel,
+  lastNewCollectionType;
+
+  String toStringKey() {
+    switch (this) {
+      case PrefKey.accounts3:
+        return "accounts3";
+      case PrefKey.currentAccountIndex:
+        return "currentAccountIndex";
+      case PrefKey.homePhotosZoomLevel:
+        return "homePhotosZoomLevel";
+      case PrefKey.albumBrowserZoomLevel:
+        return "albumViewerZoomLevel";
+      case PrefKey.homeAlbumsSort:
+        return "homeAlbumsSort";
+      case PrefKey.enableExif:
+        return "isEnableExif";
+      case PrefKey.viewerScreenBrightness:
+        return "viewerScreenBrightness";
+      case PrefKey.viewerForceRotation:
+        return "viewerForceRotation";
+      case PrefKey.setupProgress:
+        return "setupProgress";
+      case PrefKey.lastVersion:
+        return "lastVersion";
+      case PrefKey.darkTheme:
+        return "isDarkTheme";
+      case PrefKey.followSystemTheme:
+        return "isFollowSystemTheme";
+      case PrefKey.useBlackInDarkTheme:
+        return "isUseBlackInDarkTheme";
+      case PrefKey.language:
+        return "language";
+      case PrefKey.labEnableSharedAlbum:
+        return "isLabEnableSharedAlbum";
+      case PrefKey.slideshowDuration:
+        return "slideshowDuration";
+      case PrefKey.isSlideshowShuffle:
+        return "isSlideshowShuffle";
+      case PrefKey.isSlideshowRepeat:
+        return "isSlideshowRepeat";
+      case PrefKey.isAlbumBrowserShowDate:
+        return "isAlbumBrowserShowDate";
+      case PrefKey.gpsMapProvider:
+        return "gpsMapProvider";
+      case PrefKey.hasShownSharedAlbumInfo:
+        return "hasShownSharedAlbumInfo";
+      case PrefKey.enhanceMaxWidth:
+        return "enhanceMaxWidth";
+      case PrefKey.enhanceMaxHeight:
+        return "enhanceMaxHeight";
+      case PrefKey.hasShownEnhanceInfo:
+        return "hasShownEnhanceInfo";
+      case PrefKey.firstRunTime:
+        return "firstRunTime";
+      case PrefKey.isPhotosTabSortByName:
+        return "isPhotosTabSortByName";
+      case PrefKey.shouldProcessExifWifiOnly:
+        return "shouldProcessExifWifiOnly";
+      case PrefKey.doubleTapExit:
+        return "doubleTapExit";
+      case PrefKey.memoriesRange:
+        return "memoriesRange";
+      case PrefKey.saveEditResultToServer:
+        return "saveEditResultToServer";
+      case PrefKey.hasShownSaveEditResultDialog:
+        return "hasShownSaveEditResultDialog";
+      case PrefKey.isSlideshowReverse:
+        return "isSlideshowReverse";
+      case PrefKey.seedColor:
+        return "seedColor";
+      case PrefKey.isVideoPlayerMute:
+        return "isVideoPlayerMute";
+      case PrefKey.isVideoPlayerLoop:
+        return "isVideoPlayerLoop";
+
+      // account pref
+      case PrefKey.isEnableFaceRecognitionApp:
+        return "isEnableFaceRecognitionApp";
+      case PrefKey.shareFolder:
+        return "shareFolder";
+      case PrefKey.hasNewSharedAlbum:
+        return "hasNewSharedAlbum";
+      case PrefKey.isEnableMemoryAlbum:
+        return "isEnableMemoryAlbum";
+      case PrefKey.touchRootEtag:
+        return "touchRootEtag";
+      case PrefKey.accountLabel:
+        return "accountLabel";
+      case PrefKey.lastNewCollectionType:
+        return "lastNewCollectionType";
+    }
+  }
+}
+
+/// Provide the data for [Pref]
+abstract class PrefProvider {
+  bool? getBool(PrefKey key);
+  Future<bool> setBool(PrefKey key, bool value);
+
+  int? getInt(PrefKey key);
+  Future<bool> setInt(PrefKey key, int value);
+
+  String? getString(PrefKey key);
+  Future<bool> setString(PrefKey key, String value);
+
+  List<String>? getStringList(PrefKey key);
+  Future<bool> setStringList(PrefKey key, List<String> value);
+
+  Future<bool> remove(PrefKey key);
+  Future<bool> clear();
+}
diff --git a/app/lib/pref.g.dart b/app/lib/entity/pref.g.dart
similarity index 100%
rename from app/lib/pref.g.dart
rename to app/lib/entity/pref.g.dart
diff --git a/app/lib/entity/pref/extension.dart b/app/lib/entity/pref/extension.dart
new file mode 100644
index 00000000..edb50979
--- /dev/null
+++ b/app/lib/entity/pref/extension.dart
@@ -0,0 +1,270 @@
+part of '../pref.dart';
+
+extension PrefExtension on Pref {
+  Account? getCurrentAccount() {
+    try {
+      return getAccounts3()![getCurrentAccountIndex()!];
+    } catch (_) {
+      return null;
+    }
+  }
+
+  List<Account>? getAccounts3() {
+    final jsonObjs = provider.getStringList(PrefKey.accounts3);
+    return jsonObjs
+        ?.map((e) => Account.fromJson(
+              jsonDecode(e),
+              upgraderV1: const AccountUpgraderV1(),
+            ))
+        .where((e) {
+          if (e == null) {
+            _log.shout("[getAccounts3] Failed upgrading account");
+          }
+          return true;
+        })
+        .whereNotNull()
+        .toList();
+  }
+
+  List<Account> getAccounts3Or(List<Account> def) => getAccounts3() ?? def;
+  Future<bool> setAccounts3(List<Account>? value) {
+    if (value == null) {
+      return _remove(PrefKey.accounts3);
+    } else {
+      final jsons = value.map((e) => jsonEncode(e.toJson())).toList();
+      return provider.setStringList(PrefKey.accounts3, jsons);
+    }
+  }
+
+  int? getCurrentAccountIndex() => provider.getInt(PrefKey.currentAccountIndex);
+  int getCurrentAccountIndexOr(int def) => getCurrentAccountIndex() ?? def;
+  Future<bool> setCurrentAccountIndex(int? value) {
+    if (value == null) {
+      return _remove(PrefKey.currentAccountIndex);
+    } else {
+      return _set<int>(PrefKey.currentAccountIndex, value,
+          (key, value) => provider.setInt(key, value));
+    }
+  }
+
+  int? getHomePhotosZoomLevel() => provider.getInt(PrefKey.homePhotosZoomLevel);
+  int getHomePhotosZoomLevelOr(int def) => getHomePhotosZoomLevel() ?? def;
+  Future<bool> setHomePhotosZoomLevel(int value) => _set<int>(
+      PrefKey.homePhotosZoomLevel,
+      value,
+      (key, value) => provider.setInt(key, value));
+
+  int? getAlbumBrowserZoomLevel() =>
+      provider.getInt(PrefKey.albumBrowserZoomLevel);
+  int getAlbumBrowserZoomLevelOr(int def) => getAlbumBrowserZoomLevel() ?? def;
+  Future<bool> setAlbumBrowserZoomLevel(int value) => _set<int>(
+      PrefKey.albumBrowserZoomLevel,
+      value,
+      (key, value) => provider.setInt(key, value));
+
+  int? getHomeAlbumsSort() => provider.getInt(PrefKey.homeAlbumsSort);
+  int getHomeAlbumsSortOr(int def) => getHomeAlbumsSort() ?? def;
+  Future<bool> setHomeAlbumsSort(int value) => _set<int>(PrefKey.homeAlbumsSort,
+      value, (key, value) => provider.setInt(key, value));
+
+  bool? isEnableExif() => provider.getBool(PrefKey.enableExif);
+  bool isEnableExifOr([bool def = true]) => isEnableExif() ?? def;
+  Future<bool> setEnableExif(bool value) => _set<bool>(
+      PrefKey.enableExif, value, (key, value) => provider.setBool(key, value));
+
+  int? getViewerScreenBrightness() =>
+      provider.getInt(PrefKey.viewerScreenBrightness);
+  int getViewerScreenBrightnessOr([int def = -1]) =>
+      getViewerScreenBrightness() ?? def;
+  Future<bool> setViewerScreenBrightness(int value) => _set<int>(
+      PrefKey.viewerScreenBrightness,
+      value,
+      (key, value) => provider.setInt(key, value));
+
+  bool? isViewerForceRotation() =>
+      provider.getBool(PrefKey.viewerForceRotation);
+  bool isViewerForceRotationOr([bool def = false]) =>
+      isViewerForceRotation() ?? def;
+  Future<bool> setViewerForceRotation(bool value) => _set<bool>(
+      PrefKey.viewerForceRotation,
+      value,
+      (key, value) => provider.setBool(key, value));
+
+  int? getSetupProgress() => provider.getInt(PrefKey.setupProgress);
+  int getSetupProgressOr([int def = 0]) => getSetupProgress() ?? def;
+  Future<bool> setSetupProgress(int value) => _set<int>(PrefKey.setupProgress,
+      value, (key, value) => provider.setInt(key, value));
+
+  /// Return the version number when the app last ran
+  int? getLastVersion() => provider.getInt(PrefKey.lastVersion);
+  int getLastVersionOr(int def) => getLastVersion() ?? def;
+  Future<bool> setLastVersion(int value) => _set<int>(
+      PrefKey.lastVersion, value, (key, value) => provider.setInt(key, value));
+
+  bool? isDarkTheme() => provider.getBool(PrefKey.darkTheme);
+  bool isDarkThemeOr(bool def) => isDarkTheme() ?? def;
+  Future<bool> setDarkTheme(bool value) => _set<bool>(
+      PrefKey.darkTheme, value, (key, value) => provider.setBool(key, value));
+
+  bool? isFollowSystemTheme() => provider.getBool(PrefKey.followSystemTheme);
+  bool isFollowSystemThemeOr(bool def) => isFollowSystemTheme() ?? def;
+  Future<bool> setFollowSystemTheme(bool value) => _set<bool>(
+      PrefKey.followSystemTheme,
+      value,
+      (key, value) => provider.setBool(key, value));
+
+  bool? isUseBlackInDarkTheme() =>
+      provider.getBool(PrefKey.useBlackInDarkTheme);
+  bool isUseBlackInDarkThemeOr(bool def) => isUseBlackInDarkTheme() ?? def;
+  Future<bool> setUseBlackInDarkTheme(bool value) => _set<bool>(
+      PrefKey.useBlackInDarkTheme,
+      value,
+      (key, value) => provider.setBool(key, value));
+
+  int? getLanguage() => provider.getInt(PrefKey.language);
+  int getLanguageOr(int def) => getLanguage() ?? def;
+  Future<bool> setLanguage(int value) => _set<int>(
+      PrefKey.language, value, (key, value) => provider.setInt(key, value));
+
+  int? getSlideshowDuration() => provider.getInt(PrefKey.slideshowDuration);
+  int getSlideshowDurationOr(int def) => getSlideshowDuration() ?? def;
+  Future<bool> setSlideshowDuration(int value) => _set<int>(
+      PrefKey.slideshowDuration,
+      value,
+      (key, value) => provider.setInt(key, value));
+
+  bool? isSlideshowShuffle() => provider.getBool(PrefKey.isSlideshowShuffle);
+  bool isSlideshowShuffleOr(bool def) => isSlideshowShuffle() ?? def;
+  Future<bool> setSlideshowShuffle(bool value) => _set<bool>(
+      PrefKey.isSlideshowShuffle,
+      value,
+      (key, value) => provider.setBool(key, value));
+
+  bool? isSlideshowRepeat() => provider.getBool(PrefKey.isSlideshowRepeat);
+  bool isSlideshowRepeatOr(bool def) => isSlideshowRepeat() ?? def;
+  Future<bool> setSlideshowRepeat(bool value) => _set<bool>(
+      PrefKey.isSlideshowRepeat,
+      value,
+      (key, value) => provider.setBool(key, value));
+
+  bool? isAlbumBrowserShowDate() =>
+      provider.getBool(PrefKey.isAlbumBrowserShowDate);
+  bool isAlbumBrowserShowDateOr([bool def = false]) =>
+      isAlbumBrowserShowDate() ?? def;
+  Future<bool> setAlbumBrowserShowDate(bool value) => _set<bool>(
+      PrefKey.isAlbumBrowserShowDate,
+      value,
+      (key, value) => provider.setBool(key, value));
+
+  int? getGpsMapProvider() => provider.getInt(PrefKey.gpsMapProvider);
+  int getGpsMapProviderOr(int def) => getGpsMapProvider() ?? def;
+  Future<bool> setGpsMapProvider(int value) => _set<int>(PrefKey.gpsMapProvider,
+      value, (key, value) => provider.setInt(key, value));
+
+  bool? hasShownSharedAlbumInfo() =>
+      provider.getBool(PrefKey.hasShownSharedAlbumInfo);
+  bool hasShownSharedAlbumInfoOr(bool def) => hasShownSharedAlbumInfo() ?? def;
+  Future<bool> setHasShownSharedAlbumInfo(bool value) => _set<bool>(
+      PrefKey.hasShownSharedAlbumInfo,
+      value,
+      (key, value) => provider.setBool(key, value));
+
+  int? getEnhanceMaxWidth() => provider.getInt(PrefKey.enhanceMaxWidth);
+  int getEnhanceMaxWidthOr([int def = 2048]) => getEnhanceMaxWidth() ?? def;
+  Future<bool> setEnhanceMaxWidth(int value) => _set<int>(
+      PrefKey.enhanceMaxWidth,
+      value,
+      (key, value) => provider.setInt(key, value));
+
+  int? getEnhanceMaxHeight() => provider.getInt(PrefKey.enhanceMaxHeight);
+  int getEnhanceMaxHeightOr([int def = 1536]) => getEnhanceMaxHeight() ?? def;
+  Future<bool> setEnhanceMaxHeight(int value) => _set<int>(
+      PrefKey.enhanceMaxHeight,
+      value,
+      (key, value) => provider.setInt(key, value));
+
+  bool? hasShownEnhanceInfo() => provider.getBool(PrefKey.hasShownEnhanceInfo);
+  bool hasShownEnhanceInfoOr([bool def = false]) =>
+      hasShownEnhanceInfo() ?? def;
+  Future<bool> setHasShownEnhanceInfo(bool value) => _set<bool>(
+      PrefKey.hasShownEnhanceInfo,
+      value,
+      (key, value) => provider.setBool(key, value));
+
+  int? getFirstRunTime() => provider.getInt(PrefKey.firstRunTime);
+  int getFirstRunTimeOr(int def) => getFirstRunTime() ?? def;
+  Future<bool> setFirstRunTime(int value) => _set<int>(
+      PrefKey.firstRunTime, value, (key, value) => provider.setInt(key, value));
+
+  bool? isPhotosTabSortByName() =>
+      provider.getBool(PrefKey.isPhotosTabSortByName);
+  bool isPhotosTabSortByNameOr([bool def = false]) =>
+      isPhotosTabSortByName() ?? def;
+  Future<bool> setPhotosTabSortByName(bool value) => _set<bool>(
+      PrefKey.isPhotosTabSortByName,
+      value,
+      (key, value) => provider.setBool(key, value));
+
+  bool? shouldProcessExifWifiOnly() =>
+      provider.getBool(PrefKey.shouldProcessExifWifiOnly);
+  bool shouldProcessExifWifiOnlyOr([bool def = true]) =>
+      shouldProcessExifWifiOnly() ?? def;
+  Future<bool> setProcessExifWifiOnly(bool value) => _set<bool>(
+      PrefKey.shouldProcessExifWifiOnly,
+      value,
+      (key, value) => provider.setBool(key, value));
+
+  bool? isDoubleTapExit() => provider.getBool(PrefKey.doubleTapExit);
+  bool isDoubleTapExitOr([bool def = false]) => isDoubleTapExit() ?? def;
+  Future<bool> setDoubleTapExit(bool value) => _set<bool>(PrefKey.doubleTapExit,
+      value, (key, value) => provider.setBool(key, value));
+
+  int? getMemoriesRange() => provider.getInt(PrefKey.memoriesRange);
+  int getMemoriesRangeOr([int def = 2]) => getMemoriesRange() ?? def;
+  Future<bool> setMemoriesRange(int value) => _set<int>(PrefKey.memoriesRange,
+      value, (key, value) => provider.setInt(key, value));
+
+  bool? isSaveEditResultToServer() =>
+      provider.getBool(PrefKey.saveEditResultToServer);
+  bool isSaveEditResultToServerOr([bool def = true]) =>
+      isSaveEditResultToServer() ?? def;
+  Future<bool> setSaveEditResultToServer(bool value) => _set<bool>(
+      PrefKey.saveEditResultToServer,
+      value,
+      (key, value) => provider.setBool(key, value));
+
+  bool? hasShownSaveEditResultDialog() =>
+      provider.getBool(PrefKey.hasShownSaveEditResultDialog);
+  bool hasShownSaveEditResultDialogOr([bool def = false]) =>
+      hasShownSaveEditResultDialog() ?? def;
+  Future<bool> setHasShownSaveEditResultDialog(bool value) => _set<bool>(
+      PrefKey.hasShownSaveEditResultDialog,
+      value,
+      (key, value) => provider.setBool(key, value));
+
+  bool? isSlideshowReverse() => provider.getBool(PrefKey.isSlideshowReverse);
+  bool isSlideshowReverseOr(bool def) => isSlideshowReverse() ?? def;
+  Future<bool> setSlideshowReverse(bool value) => _set<bool>(
+      PrefKey.isSlideshowReverse,
+      value,
+      (key, value) => provider.setBool(key, value));
+
+  int? getSeedColor() => provider.getInt(PrefKey.seedColor);
+  int getSeedColorOr(int def) => getSeedColor() ?? def;
+  Future<bool> setSeedColor(int value) => _set<int>(
+      PrefKey.seedColor, value, (key, value) => provider.setInt(key, value));
+
+  bool? isVideoPlayerMute() => provider.getBool(PrefKey.isVideoPlayerMute);
+  bool isVideoPlayerMuteOr([bool def = false]) => isVideoPlayerMute() ?? def;
+  Future<bool> setVideoPlayerMute(bool value) => _set<bool>(
+      PrefKey.isVideoPlayerMute,
+      value,
+      (key, value) => provider.setBool(key, value));
+
+  bool? isVideoPlayerLoop() => provider.getBool(PrefKey.isVideoPlayerLoop);
+  bool isVideoPlayerLoopOr([bool def = false]) => isVideoPlayerLoop() ?? def;
+  Future<bool> setVideoPlayerLoop(bool value) => _set<bool>(
+      PrefKey.isVideoPlayerLoop,
+      value,
+      (key, value) => provider.setBool(key, value));
+}
diff --git a/app/lib/entity/pref/provider/memory.dart b/app/lib/entity/pref/provider/memory.dart
new file mode 100644
index 00000000..41ceecdd
--- /dev/null
+++ b/app/lib/entity/pref/provider/memory.dart
@@ -0,0 +1,50 @@
+import 'package:nc_photos/entity/pref.dart';
+
+/// [Pref] stored in memory, useful in unit tests
+class PrefMemoryProvider extends PrefProvider {
+  PrefMemoryProvider([
+    Map<String, dynamic> initialData = const <String, dynamic>{},
+  ]) : _data = Map.of(initialData);
+
+  @override
+  bool? getBool(PrefKey key) => _get<bool>(key);
+  @override
+  Future<bool> setBool(PrefKey key, bool value) => _set(key, value);
+
+  @override
+  int? getInt(PrefKey key) => _get<int>(key);
+  @override
+  Future<bool> setInt(PrefKey key, int value) => _set(key, value);
+
+  @override
+  String? getString(PrefKey key) => _get<String>(key);
+  @override
+  Future<bool> setString(PrefKey key, String value) => _set(key, value);
+
+  @override
+  List<String>? getStringList(PrefKey key) => _get<List<String>>(key);
+  @override
+  Future<bool> setStringList(PrefKey key, List<String> value) =>
+      _set(key, value);
+
+  @override
+  Future<bool> remove(PrefKey key) async {
+    _data.remove(key);
+    return true;
+  }
+
+  @override
+  Future<bool> clear() async {
+    _data.clear();
+    return true;
+  }
+
+  T? _get<T>(PrefKey key) => _data[key.toStringKey()];
+
+  Future<bool> _set<T>(PrefKey key, T value) async {
+    _data[key.toStringKey()] = value;
+    return true;
+  }
+
+  final Map<String, dynamic> _data;
+}
diff --git a/app/lib/entity/pref/provider/shared_preferences.dart b/app/lib/entity/pref/provider/shared_preferences.dart
new file mode 100644
index 00000000..dbd8ee21
--- /dev/null
+++ b/app/lib/entity/pref/provider/shared_preferences.dart
@@ -0,0 +1,58 @@
+import 'package:nc_photos/entity/pref.dart';
+import 'package:nc_photos/mobile/platform.dart'
+    if (dart.library.html) 'package:nc_photos/web/platform.dart' as platform;
+import 'package:nc_photos/use_case/compat/v34.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+/// [Pref] stored with [SharedPreferences] lib
+class PrefSharedPreferencesProvider extends PrefProvider {
+  Future<void> init() async {
+    // Obsolete, CompatV34 is compatible with pre v32 versions
+    // if (await CompatV32.isPrefNeedMigration()) {
+    //   await CompatV32.migratePref();
+    // }
+    if (await CompatV34.isPrefNeedMigration()) {
+      await CompatV34.migratePref(platform.UniversalStorage());
+    }
+    return SharedPreferences.getInstance().then((pref) {
+      _pref = pref;
+    });
+  }
+
+  @override
+  bool? getBool(PrefKey key) => _pref.getBool(key.toStringKey());
+
+  @override
+  Future<bool> setBool(PrefKey key, bool value) =>
+      _pref.setBool(key.toStringKey(), value);
+
+  @override
+  int? getInt(PrefKey key) => _pref.getInt(key.toStringKey());
+
+  @override
+  Future<bool> setInt(PrefKey key, int value) =>
+      _pref.setInt(key.toStringKey(), value);
+
+  @override
+  String? getString(PrefKey key) => _pref.getString(key.toStringKey());
+
+  @override
+  Future<bool> setString(PrefKey key, String value) =>
+      _pref.setString(key.toStringKey(), value);
+
+  @override
+  List<String>? getStringList(PrefKey key) =>
+      _pref.getStringList(key.toStringKey());
+
+  @override
+  Future<bool> setStringList(PrefKey key, List<String> value) =>
+      _pref.setStringList(key.toStringKey(), value);
+
+  @override
+  Future<bool> remove(PrefKey key) => _pref.remove(key.toStringKey());
+
+  @override
+  Future<bool> clear() => _pref.clear();
+
+  late SharedPreferences _pref;
+}
diff --git a/app/lib/entity/pref/provider/universal_storage.dart b/app/lib/entity/pref/provider/universal_storage.dart
new file mode 100644
index 00000000..3d7c43f1
--- /dev/null
+++ b/app/lib/entity/pref/provider/universal_storage.dart
@@ -0,0 +1,66 @@
+import 'dart:convert';
+
+import 'package:nc_photos/entity/pref.dart';
+import 'package:nc_photos/mobile/platform.dart'
+    if (dart.library.html) 'package:nc_photos/web/platform.dart' as platform;
+
+/// [Pref] backed by [UniversalStorage]
+class PrefUniversalStorageProvider extends PrefProvider {
+  PrefUniversalStorageProvider(this.name);
+
+  Future<void> init() async {
+    final prefStr = await platform.UniversalStorage().getString(name) ?? "{}";
+    _data
+      ..clear()
+      ..addAll(jsonDecode(prefStr));
+  }
+
+  @override
+  bool? getBool(PrefKey key) => _get<bool>(key);
+  @override
+  Future<bool> setBool(PrefKey key, bool value) => _set(key, value);
+
+  @override
+  int? getInt(PrefKey key) => _get<int>(key);
+  @override
+  Future<bool> setInt(PrefKey key, int value) => _set(key, value);
+
+  @override
+  String? getString(PrefKey key) => _get<String>(key);
+  @override
+  Future<bool> setString(PrefKey key, String value) => _set(key, value);
+
+  @override
+  List<String>? getStringList(PrefKey key) => _get<List<String>>(key);
+  @override
+  Future<bool> setStringList(PrefKey key, List<String> value) =>
+      _set(key, value);
+
+  @override
+  Future<bool> remove(PrefKey key) async {
+    final newData = Map.of(_data)..remove(key.toStringKey());
+    await platform.UniversalStorage().putString(name, jsonEncode(newData));
+    _data.remove(key.toStringKey());
+    return true;
+  }
+
+  @override
+  Future<bool> clear() async {
+    await platform.UniversalStorage().remove(name);
+    _data.clear();
+    return true;
+  }
+
+  T? _get<T>(PrefKey key) => _data[key.toStringKey()];
+
+  Future<bool> _set<T>(PrefKey key, T value) async {
+    final newData = Map.of(_data)
+      ..addEntries([MapEntry(key.toStringKey(), value)]);
+    await platform.UniversalStorage().putString(name, jsonEncode(newData));
+    _data[key.toStringKey()] = value;
+    return true;
+  }
+
+  final String name;
+  final _data = <String, dynamic>{};
+}
diff --git a/app/lib/pref_util.dart b/app/lib/entity/pref_util.dart
similarity index 68%
rename from app/lib/pref_util.dart
rename to app/lib/entity/pref_util.dart
index 156bf34a..9fb5fc2e 100644
--- a/app/lib/pref_util.dart
+++ b/app/lib/entity/pref_util.dart
@@ -1,5 +1,6 @@
 import 'package:nc_photos/account.dart';
-import 'package:nc_photos/pref.dart';
+import 'package:nc_photos/entity/pref.dart';
+import 'package:nc_photos/entity/pref/provider/universal_storage.dart';
 
 Future<AccountPref> loadAccountPref(Account account) async {
   final provider = PrefUniversalStorageProvider("accounts/${account.id}/pref");
diff --git a/app/lib/event/event.dart b/app/lib/event/event.dart
index eb3abfa8..29b53c19 100644
--- a/app/lib/event/event.dart
+++ b/app/lib/event/event.dart
@@ -8,8 +8,8 @@ import 'package:nc_photos/entity/album.dart';
 import 'package:nc_photos/entity/file.dart';
 import 'package:nc_photos/entity/file_descriptor.dart';
 import 'package:nc_photos/entity/local_file.dart';
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/entity/share.dart';
-import 'package:nc_photos/pref.dart';
 
 class AppEventListener<T> {
   AppEventListener(this._listener);
diff --git a/app/lib/language_util.dart b/app/lib/language_util.dart
index b9638361..2b165444 100644
--- a/app/lib/language_util.dart
+++ b/app/lib/language_util.dart
@@ -1,6 +1,6 @@
 import 'package:flutter/widgets.dart';
 import 'package:nc_photos/app_localizations.dart';
-import 'package:nc_photos/pref.dart';
+import 'package:nc_photos/entity/pref.dart';
 
 class AppLanguage {
   const AppLanguage(this.langId, this._nativeName, this.isoName, this.locale);
diff --git a/app/lib/legacy/sign_in.dart b/app/lib/legacy/sign_in.dart
index 4b3ba6df..4d81e50a 100644
--- a/app/lib/legacy/sign_in.dart
+++ b/app/lib/legacy/sign_in.dart
@@ -6,13 +6,13 @@ import 'package:logging/logging.dart';
 import 'package:nc_photos/account.dart';
 import 'package:nc_photos/app_localizations.dart';
 import 'package:nc_photos/di_container.dart';
+import 'package:nc_photos/entity/pref.dart';
+import 'package:nc_photos/entity/pref_util.dart' as pref_util;
 import 'package:nc_photos/entity/sqlite/database.dart' as sql;
 import 'package:nc_photos/help_utils.dart' as help_utils;
 import 'package:nc_photos/iterable_extension.dart';
 import 'package:nc_photos/legacy/connect.dart';
 import 'package:nc_photos/platform/k.dart' as platform_k;
-import 'package:nc_photos/pref.dart';
-import 'package:nc_photos/pref_util.dart' as pref_util;
 import 'package:nc_photos/theme.dart';
 import 'package:nc_photos/url_launcher_util.dart';
 import 'package:nc_photos/widget/home.dart';
diff --git a/app/lib/metadata_task_manager.dart b/app/lib/metadata_task_manager.dart
index a645fb27..a039531d 100644
--- a/app/lib/metadata_task_manager.dart
+++ b/app/lib/metadata_task_manager.dart
@@ -7,8 +7,8 @@ import 'package:nc_photos/account.dart';
 import 'package:nc_photos/di_container.dart';
 import 'package:nc_photos/entity/file.dart';
 import 'package:nc_photos/entity/file_util.dart' as file_util;
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/event/event.dart';
-import 'package:nc_photos/pref.dart';
 import 'package:nc_photos/reverse_geocoder.dart';
 import 'package:nc_photos/use_case/update_missing_metadata.dart';
 import 'package:np_codegen/np_codegen.dart';
diff --git a/app/lib/pref.dart b/app/lib/pref.dart
deleted file mode 100644
index 1c8d0c0c..00000000
--- a/app/lib/pref.dart
+++ /dev/null
@@ -1,732 +0,0 @@
-import 'dart:async';
-import 'dart:convert';
-
-import 'package:collection/collection.dart';
-import 'package:event_bus/event_bus.dart';
-import 'package:kiwi/kiwi.dart';
-import 'package:logging/logging.dart';
-import 'package:nc_photos/account.dart';
-import 'package:nc_photos/event/event.dart';
-import 'package:nc_photos/mobile/platform.dart'
-    if (dart.library.html) 'package:nc_photos/web/platform.dart' as platform;
-import 'package:nc_photos/use_case/compat/v34.dart';
-import 'package:np_codegen/np_codegen.dart';
-import 'package:shared_preferences/shared_preferences.dart';
-
-part 'pref.g.dart';
-
-@npLog
-class Pref {
-  factory Pref() {
-    _inst ??= Pref.scoped(PrefMemoryProvider());
-    return _inst!;
-  }
-
-  Pref.scoped(this.provider);
-
-  /// Set the global [Pref] instance returned by the default constructor
-  static void setGlobalInstance(Pref pref) {
-    assert(_inst == null);
-    _inst = pref;
-  }
-
-  List<Account>? getAccounts3() {
-    final jsonObjs = provider.getStringList(PrefKey.accounts3);
-    return jsonObjs
-        ?.map((e) => Account.fromJson(
-              jsonDecode(e),
-              upgraderV1: const AccountUpgraderV1(),
-            ))
-        .where((e) {
-          if (e == null) {
-            _log.shout("[getAccounts3] Failed upgrading account");
-          }
-          return true;
-        })
-        .whereNotNull()
-        .toList();
-  }
-
-  List<Account> getAccounts3Or(List<Account> def) => getAccounts3() ?? def;
-  Future<bool> setAccounts3(List<Account>? value) {
-    if (value == null) {
-      return _remove(PrefKey.accounts3);
-    } else {
-      final jsons = value.map((e) => jsonEncode(e.toJson())).toList();
-      return provider.setStringList(PrefKey.accounts3, jsons);
-    }
-  }
-
-  int? getCurrentAccountIndex() => provider.getInt(PrefKey.currentAccountIndex);
-  int getCurrentAccountIndexOr(int def) => getCurrentAccountIndex() ?? def;
-  Future<bool> setCurrentAccountIndex(int? value) {
-    if (value == null) {
-      return _remove(PrefKey.currentAccountIndex);
-    } else {
-      return _set<int>(PrefKey.currentAccountIndex, value,
-          (key, value) => provider.setInt(key, value));
-    }
-  }
-
-  int? getHomePhotosZoomLevel() => provider.getInt(PrefKey.homePhotosZoomLevel);
-  int getHomePhotosZoomLevelOr(int def) => getHomePhotosZoomLevel() ?? def;
-  Future<bool> setHomePhotosZoomLevel(int value) => _set<int>(
-      PrefKey.homePhotosZoomLevel,
-      value,
-      (key, value) => provider.setInt(key, value));
-
-  int? getAlbumBrowserZoomLevel() =>
-      provider.getInt(PrefKey.albumBrowserZoomLevel);
-  int getAlbumBrowserZoomLevelOr(int def) => getAlbumBrowserZoomLevel() ?? def;
-  Future<bool> setAlbumBrowserZoomLevel(int value) => _set<int>(
-      PrefKey.albumBrowserZoomLevel,
-      value,
-      (key, value) => provider.setInt(key, value));
-
-  int? getHomeAlbumsSort() => provider.getInt(PrefKey.homeAlbumsSort);
-  int getHomeAlbumsSortOr(int def) => getHomeAlbumsSort() ?? def;
-  Future<bool> setHomeAlbumsSort(int value) => _set<int>(PrefKey.homeAlbumsSort,
-      value, (key, value) => provider.setInt(key, value));
-
-  bool? isEnableExif() => provider.getBool(PrefKey.enableExif);
-  bool isEnableExifOr([bool def = true]) => isEnableExif() ?? def;
-  Future<bool> setEnableExif(bool value) => _set<bool>(
-      PrefKey.enableExif, value, (key, value) => provider.setBool(key, value));
-
-  int? getViewerScreenBrightness() =>
-      provider.getInt(PrefKey.viewerScreenBrightness);
-  int getViewerScreenBrightnessOr([int def = -1]) =>
-      getViewerScreenBrightness() ?? def;
-  Future<bool> setViewerScreenBrightness(int value) => _set<int>(
-      PrefKey.viewerScreenBrightness,
-      value,
-      (key, value) => provider.setInt(key, value));
-
-  bool? isViewerForceRotation() =>
-      provider.getBool(PrefKey.viewerForceRotation);
-  bool isViewerForceRotationOr([bool def = false]) =>
-      isViewerForceRotation() ?? def;
-  Future<bool> setViewerForceRotation(bool value) => _set<bool>(
-      PrefKey.viewerForceRotation,
-      value,
-      (key, value) => provider.setBool(key, value));
-
-  int? getSetupProgress() => provider.getInt(PrefKey.setupProgress);
-  int getSetupProgressOr([int def = 0]) => getSetupProgress() ?? def;
-  Future<bool> setSetupProgress(int value) => _set<int>(PrefKey.setupProgress,
-      value, (key, value) => provider.setInt(key, value));
-
-  /// Return the version number when the app last ran
-  int? getLastVersion() => provider.getInt(PrefKey.lastVersion);
-  int getLastVersionOr(int def) => getLastVersion() ?? def;
-  Future<bool> setLastVersion(int value) => _set<int>(
-      PrefKey.lastVersion, value, (key, value) => provider.setInt(key, value));
-
-  bool? isDarkTheme() => provider.getBool(PrefKey.darkTheme);
-  bool isDarkThemeOr(bool def) => isDarkTheme() ?? def;
-  Future<bool> setDarkTheme(bool value) => _set<bool>(
-      PrefKey.darkTheme, value, (key, value) => provider.setBool(key, value));
-
-  bool? isFollowSystemTheme() => provider.getBool(PrefKey.followSystemTheme);
-  bool isFollowSystemThemeOr(bool def) => isFollowSystemTheme() ?? def;
-  Future<bool> setFollowSystemTheme(bool value) => _set<bool>(
-      PrefKey.followSystemTheme,
-      value,
-      (key, value) => provider.setBool(key, value));
-
-  bool? isUseBlackInDarkTheme() =>
-      provider.getBool(PrefKey.useBlackInDarkTheme);
-  bool isUseBlackInDarkThemeOr(bool def) => isUseBlackInDarkTheme() ?? def;
-  Future<bool> setUseBlackInDarkTheme(bool value) => _set<bool>(
-      PrefKey.useBlackInDarkTheme,
-      value,
-      (key, value) => provider.setBool(key, value));
-
-  int? getLanguage() => provider.getInt(PrefKey.language);
-  int getLanguageOr(int def) => getLanguage() ?? def;
-  Future<bool> setLanguage(int value) => _set<int>(
-      PrefKey.language, value, (key, value) => provider.setInt(key, value));
-
-  int? getSlideshowDuration() => provider.getInt(PrefKey.slideshowDuration);
-  int getSlideshowDurationOr(int def) => getSlideshowDuration() ?? def;
-  Future<bool> setSlideshowDuration(int value) => _set<int>(
-      PrefKey.slideshowDuration,
-      value,
-      (key, value) => provider.setInt(key, value));
-
-  bool? isSlideshowShuffle() => provider.getBool(PrefKey.isSlideshowShuffle);
-  bool isSlideshowShuffleOr(bool def) => isSlideshowShuffle() ?? def;
-  Future<bool> setSlideshowShuffle(bool value) => _set<bool>(
-      PrefKey.isSlideshowShuffle,
-      value,
-      (key, value) => provider.setBool(key, value));
-
-  bool? isSlideshowRepeat() => provider.getBool(PrefKey.isSlideshowRepeat);
-  bool isSlideshowRepeatOr(bool def) => isSlideshowRepeat() ?? def;
-  Future<bool> setSlideshowRepeat(bool value) => _set<bool>(
-      PrefKey.isSlideshowRepeat,
-      value,
-      (key, value) => provider.setBool(key, value));
-
-  bool? isAlbumBrowserShowDate() =>
-      provider.getBool(PrefKey.isAlbumBrowserShowDate);
-  bool isAlbumBrowserShowDateOr([bool def = false]) =>
-      isAlbumBrowserShowDate() ?? def;
-  Future<bool> setAlbumBrowserShowDate(bool value) => _set<bool>(
-      PrefKey.isAlbumBrowserShowDate,
-      value,
-      (key, value) => provider.setBool(key, value));
-
-  int? getGpsMapProvider() => provider.getInt(PrefKey.gpsMapProvider);
-  int getGpsMapProviderOr(int def) => getGpsMapProvider() ?? def;
-  Future<bool> setGpsMapProvider(int value) => _set<int>(PrefKey.gpsMapProvider,
-      value, (key, value) => provider.setInt(key, value));
-
-  bool? hasShownSharedAlbumInfo() =>
-      provider.getBool(PrefKey.hasShownSharedAlbumInfo);
-  bool hasShownSharedAlbumInfoOr(bool def) => hasShownSharedAlbumInfo() ?? def;
-  Future<bool> setHasShownSharedAlbumInfo(bool value) => _set<bool>(
-      PrefKey.hasShownSharedAlbumInfo,
-      value,
-      (key, value) => provider.setBool(key, value));
-
-  int? getEnhanceMaxWidth() => provider.getInt(PrefKey.enhanceMaxWidth);
-  int getEnhanceMaxWidthOr([int def = 2048]) => getEnhanceMaxWidth() ?? def;
-  Future<bool> setEnhanceMaxWidth(int value) => _set<int>(
-      PrefKey.enhanceMaxWidth,
-      value,
-      (key, value) => provider.setInt(key, value));
-
-  int? getEnhanceMaxHeight() => provider.getInt(PrefKey.enhanceMaxHeight);
-  int getEnhanceMaxHeightOr([int def = 1536]) => getEnhanceMaxHeight() ?? def;
-  Future<bool> setEnhanceMaxHeight(int value) => _set<int>(
-      PrefKey.enhanceMaxHeight,
-      value,
-      (key, value) => provider.setInt(key, value));
-
-  bool? hasShownEnhanceInfo() => provider.getBool(PrefKey.hasShownEnhanceInfo);
-  bool hasShownEnhanceInfoOr([bool def = false]) =>
-      hasShownEnhanceInfo() ?? def;
-  Future<bool> setHasShownEnhanceInfo(bool value) => _set<bool>(
-      PrefKey.hasShownEnhanceInfo,
-      value,
-      (key, value) => provider.setBool(key, value));
-
-  int? getFirstRunTime() => provider.getInt(PrefKey.firstRunTime);
-  int getFirstRunTimeOr(int def) => getFirstRunTime() ?? def;
-  Future<bool> setFirstRunTime(int value) => _set<int>(
-      PrefKey.firstRunTime, value, (key, value) => provider.setInt(key, value));
-
-  bool? isPhotosTabSortByName() =>
-      provider.getBool(PrefKey.isPhotosTabSortByName);
-  bool isPhotosTabSortByNameOr([bool def = false]) =>
-      isPhotosTabSortByName() ?? def;
-  Future<bool> setPhotosTabSortByName(bool value) => _set<bool>(
-      PrefKey.isPhotosTabSortByName,
-      value,
-      (key, value) => provider.setBool(key, value));
-
-  bool? shouldProcessExifWifiOnly() =>
-      provider.getBool(PrefKey.shouldProcessExifWifiOnly);
-  bool shouldProcessExifWifiOnlyOr([bool def = true]) =>
-      shouldProcessExifWifiOnly() ?? def;
-  Future<bool> setProcessExifWifiOnly(bool value) => _set<bool>(
-      PrefKey.shouldProcessExifWifiOnly,
-      value,
-      (key, value) => provider.setBool(key, value));
-
-  bool? isDoubleTapExit() => provider.getBool(PrefKey.doubleTapExit);
-  bool isDoubleTapExitOr([bool def = false]) => isDoubleTapExit() ?? def;
-  Future<bool> setDoubleTapExit(bool value) => _set<bool>(PrefKey.doubleTapExit,
-      value, (key, value) => provider.setBool(key, value));
-
-  int? getMemoriesRange() => provider.getInt(PrefKey.memoriesRange);
-  int getMemoriesRangeOr([int def = 2]) => getMemoriesRange() ?? def;
-  Future<bool> setMemoriesRange(int value) => _set<int>(PrefKey.memoriesRange,
-      value, (key, value) => provider.setInt(key, value));
-
-  bool? isSaveEditResultToServer() =>
-      provider.getBool(PrefKey.saveEditResultToServer);
-  bool isSaveEditResultToServerOr([bool def = true]) =>
-      isSaveEditResultToServer() ?? def;
-  Future<bool> setSaveEditResultToServer(bool value) => _set<bool>(
-      PrefKey.saveEditResultToServer,
-      value,
-      (key, value) => provider.setBool(key, value));
-
-  bool? hasShownSaveEditResultDialog() =>
-      provider.getBool(PrefKey.hasShownSaveEditResultDialog);
-  bool hasShownSaveEditResultDialogOr([bool def = false]) =>
-      hasShownSaveEditResultDialog() ?? def;
-  Future<bool> setHasShownSaveEditResultDialog(bool value) => _set<bool>(
-      PrefKey.hasShownSaveEditResultDialog,
-      value,
-      (key, value) => provider.setBool(key, value));
-
-  bool? isSlideshowReverse() => provider.getBool(PrefKey.isSlideshowReverse);
-  bool isSlideshowReverseOr(bool def) => isSlideshowReverse() ?? def;
-  Future<bool> setSlideshowReverse(bool value) => _set<bool>(
-      PrefKey.isSlideshowReverse,
-      value,
-      (key, value) => provider.setBool(key, value));
-
-  int? getSeedColor() => provider.getInt(PrefKey.seedColor);
-  int getSeedColorOr(int def) => getSeedColor() ?? def;
-  Future<bool> setSeedColor(int value) => _set<int>(
-      PrefKey.seedColor, value, (key, value) => provider.setInt(key, value));
-
-  bool? isVideoPlayerMute() => provider.getBool(PrefKey.isVideoPlayerMute);
-  bool isVideoPlayerMuteOr([bool def = false]) => isVideoPlayerMute() ?? def;
-  Future<bool> setVideoPlayerMute(bool value) => _set<bool>(
-      PrefKey.isVideoPlayerMute,
-      value,
-      (key, value) => provider.setBool(key, value));
-
-  bool? isVideoPlayerLoop() => provider.getBool(PrefKey.isVideoPlayerLoop);
-  bool isVideoPlayerLoopOr([bool def = false]) => isVideoPlayerLoop() ?? def;
-  Future<bool> setVideoPlayerLoop(bool value) => _set<bool>(
-      PrefKey.isVideoPlayerLoop,
-      value,
-      (key, value) => provider.setBool(key, value));
-
-  Future<bool> _set<T>(PrefKey key, T value,
-      Future<bool> Function(PrefKey key, T value) setFn) async {
-    if (await setFn(key, value)) {
-      KiwiContainer().resolve<EventBus>().fire(PrefUpdatedEvent(key, value));
-      return true;
-    } else {
-      return false;
-    }
-  }
-
-  Future<bool> _remove(PrefKey key) => provider.remove(key);
-
-  final PrefProvider provider;
-
-  static Pref? _inst;
-}
-
-class AccountPref {
-  AccountPref.scoped(this.provider);
-
-  static AccountPref of(Account account) {
-    _insts.putIfAbsent(
-        account.id, () => AccountPref.scoped(PrefMemoryProvider()));
-    return _insts[account.id]!;
-  }
-
-  /// Set the global [AccountPref] instance returned by the default constructor
-  static void setGlobalInstance(Account account, AccountPref? pref) {
-    if (pref != null) {
-      assert(!_insts.containsKey(account.id));
-      _insts[account.id] = pref;
-    } else {
-      assert(_insts.containsKey(account.id));
-      _insts.remove(account.id);
-    }
-  }
-
-  bool? isEnableFaceRecognitionApp() =>
-      provider.getBool(PrefKey.isEnableFaceRecognitionApp);
-  bool isEnableFaceRecognitionAppOr([bool def = true]) =>
-      isEnableFaceRecognitionApp() ?? def;
-  Future<bool> setEnableFaceRecognitionApp(bool value) => _set<bool>(
-      PrefKey.isEnableFaceRecognitionApp,
-      value,
-      (key, value) => provider.setBool(key, value));
-
-  String? getShareFolder() => provider.getString(PrefKey.shareFolder);
-  String getShareFolderOr([String def = ""]) => getShareFolder() ?? def;
-  Future<bool> setShareFolder(String value) => _set<String>(PrefKey.shareFolder,
-      value, (key, value) => provider.setString(key, value));
-
-  bool? hasNewSharedAlbum() => provider.getBool(PrefKey.hasNewSharedAlbum);
-  bool hasNewSharedAlbumOr([bool def = false]) => hasNewSharedAlbum() ?? def;
-  Future<bool> setNewSharedAlbum(bool value) => _set<bool>(
-      PrefKey.hasNewSharedAlbum,
-      value,
-      (key, value) => provider.setBool(key, value));
-
-  bool? isEnableMemoryAlbum() => provider.getBool(PrefKey.isEnableMemoryAlbum);
-  bool isEnableMemoryAlbumOr([bool def = false]) =>
-      isEnableMemoryAlbum() ?? def;
-  Future<bool> setEnableMemoryAlbum(bool value) => _set<bool>(
-      PrefKey.isEnableMemoryAlbum,
-      value,
-      (key, value) => provider.setBool(key, value));
-
-  String? getTouchRootEtag() => provider.getString(PrefKey.touchRootEtag);
-  String getTouchRootEtagOr([String def = ""]) => getTouchRootEtag() ?? def;
-  Future<bool> setTouchRootEtag(String value) => _set<String>(
-      PrefKey.touchRootEtag,
-      value,
-      (key, value) => provider.setString(key, value));
-  Future<bool> removeTouchRootEtag() => _remove(PrefKey.touchRootEtag);
-
-  String? getAccountLabel() => provider.getString(PrefKey.accountLabel);
-  String getAccountLabelOr([String def = ""]) => getAccountLabel() ?? def;
-  Future<bool> setAccountLabel(String? value) {
-    if (value == null) {
-      return _remove(PrefKey.accountLabel);
-    } else {
-      return _set<String>(PrefKey.accountLabel, value,
-          (key, value) => provider.setString(key, value));
-    }
-  }
-
-  int? getLastNewCollectionType() =>
-      provider.getInt(PrefKey.lastNewCollectionType);
-  int getLastNewCollectionTypeOr(int def) => getLastNewCollectionType() ?? def;
-  Future<bool> setLastNewCollectionType(int? value) {
-    if (value == null) {
-      return _remove(PrefKey.lastNewCollectionType);
-    } else {
-      return _set<int>(PrefKey.lastNewCollectionType, value,
-          (key, value) => provider.setInt(key, value));
-    }
-  }
-
-  Future<bool> _set<T>(PrefKey key, T value,
-      Future<bool> Function(PrefKey key, T value) setFn) async {
-    if (await setFn(key, value)) {
-      KiwiContainer()
-          .resolve<EventBus>()
-          .fire(AccountPrefUpdatedEvent(this, key, value));
-      return true;
-    } else {
-      return false;
-    }
-  }
-
-  Future<bool> _remove(PrefKey key) => provider.remove(key);
-
-  final PrefProvider provider;
-
-  static final _insts = <String, AccountPref>{};
-}
-
-/// Provide the data for [Pref]
-abstract class PrefProvider {
-  bool? getBool(PrefKey key);
-  Future<bool> setBool(PrefKey key, bool value);
-
-  int? getInt(PrefKey key);
-  Future<bool> setInt(PrefKey key, int value);
-
-  String? getString(PrefKey key);
-  Future<bool> setString(PrefKey key, String value);
-
-  List<String>? getStringList(PrefKey key);
-  Future<bool> setStringList(PrefKey key, List<String> value);
-
-  Future<bool> remove(PrefKey key);
-  Future<bool> clear();
-}
-
-/// [Pref] stored with [SharedPreferences] lib
-class PrefSharedPreferencesProvider extends PrefProvider {
-  Future<void> init() async {
-    // Obsolete, CompatV34 is compatible with pre v32 versions
-    // if (await CompatV32.isPrefNeedMigration()) {
-    //   await CompatV32.migratePref();
-    // }
-    if (await CompatV34.isPrefNeedMigration()) {
-      await CompatV34.migratePref(platform.UniversalStorage());
-    }
-    return SharedPreferences.getInstance().then((pref) {
-      _pref = pref;
-    });
-  }
-
-  @override
-  getBool(PrefKey key) => _pref.getBool(key.toStringKey());
-
-  @override
-  setBool(PrefKey key, bool value) => _pref.setBool(key.toStringKey(), value);
-
-  @override
-  getInt(PrefKey key) => _pref.getInt(key.toStringKey());
-
-  @override
-  setInt(PrefKey key, int value) => _pref.setInt(key.toStringKey(), value);
-
-  @override
-  getString(PrefKey key) => _pref.getString(key.toStringKey());
-
-  @override
-  setString(PrefKey key, String value) =>
-      _pref.setString(key.toStringKey(), value);
-
-  @override
-  getStringList(PrefKey key) => _pref.getStringList(key.toStringKey());
-
-  @override
-  setStringList(PrefKey key, List<String> value) =>
-      _pref.setStringList(key.toStringKey(), value);
-
-  @override
-  remove(PrefKey key) => _pref.remove(key.toStringKey());
-
-  @override
-  clear() => _pref.clear();
-
-  late SharedPreferences _pref;
-}
-
-/// [Pref] backed by [UniversalStorage]
-class PrefUniversalStorageProvider extends PrefProvider {
-  PrefUniversalStorageProvider(this.name);
-
-  Future<void> init() async {
-    final prefStr = await platform.UniversalStorage().getString(name) ?? "{}";
-    _data
-      ..clear()
-      ..addAll(jsonDecode(prefStr));
-  }
-
-  @override
-  getBool(PrefKey key) => _get<bool>(key);
-  @override
-  setBool(PrefKey key, bool value) => _set(key, value);
-
-  @override
-  getInt(PrefKey key) => _get<int>(key);
-  @override
-  setInt(PrefKey key, int value) => _set(key, value);
-
-  @override
-  getString(PrefKey key) => _get<String>(key);
-  @override
-  setString(PrefKey key, String value) => _set(key, value);
-
-  @override
-  getStringList(PrefKey key) => _get<List<String>>(key);
-  @override
-  setStringList(PrefKey key, List<String> value) => _set(key, value);
-
-  @override
-  remove(PrefKey key) async {
-    final newData = Map.of(_data)..remove(key.toStringKey());
-    await platform.UniversalStorage().putString(name, jsonEncode(newData));
-    _data.remove(key.toStringKey());
-    return true;
-  }
-
-  @override
-  clear() async {
-    await platform.UniversalStorage().remove(name);
-    _data.clear();
-    return true;
-  }
-
-  T? _get<T>(PrefKey key) => _data[key.toStringKey()];
-
-  Future<bool> _set<T>(PrefKey key, T value) async {
-    final newData = Map.of(_data)
-      ..addEntries([MapEntry(key.toStringKey(), value)]);
-    await platform.UniversalStorage().putString(name, jsonEncode(newData));
-    _data[key.toStringKey()] = value;
-    return true;
-  }
-
-  final String name;
-  final _data = <String, dynamic>{};
-}
-
-/// [Pref] stored in memory, useful in unit tests
-class PrefMemoryProvider extends PrefProvider {
-  PrefMemoryProvider([
-    Map<String, dynamic> initialData = const <String, dynamic>{},
-  ]) : _data = Map.of(initialData);
-
-  @override
-  getBool(PrefKey key) => _get<bool>(key);
-  @override
-  setBool(PrefKey key, bool value) => _set(key, value);
-
-  @override
-  getInt(PrefKey key) => _get<int>(key);
-  @override
-  setInt(PrefKey key, int value) => _set(key, value);
-
-  @override
-  getString(PrefKey key) => _get<String>(key);
-  @override
-  setString(PrefKey key, String value) => _set(key, value);
-
-  @override
-  getStringList(PrefKey key) => _get<List<String>>(key);
-  @override
-  setStringList(PrefKey key, List<String> value) => _set(key, value);
-
-  @override
-  remove(PrefKey key) async {
-    _data.remove(key);
-    return true;
-  }
-
-  @override
-  clear() async {
-    _data.clear();
-    return true;
-  }
-
-  T? _get<T>(PrefKey key) => _data[key.toStringKey()];
-
-  Future<bool> _set<T>(PrefKey key, T value) async {
-    _data[key.toStringKey()] = value;
-    return true;
-  }
-
-  final Map<String, dynamic> _data;
-}
-
-enum PrefKey {
-  accounts3,
-  currentAccountIndex,
-  homePhotosZoomLevel,
-  albumBrowserZoomLevel,
-  homeAlbumsSort,
-  enableExif,
-  viewerScreenBrightness,
-  viewerForceRotation,
-  setupProgress,
-  lastVersion,
-  darkTheme,
-  followSystemTheme,
-  useBlackInDarkTheme,
-  language,
-  labEnableSharedAlbum,
-  slideshowDuration,
-  isSlideshowShuffle,
-  isSlideshowRepeat,
-  isAlbumBrowserShowDate,
-  gpsMapProvider,
-  hasShownSharedAlbumInfo,
-  enhanceMaxWidth,
-  enhanceMaxHeight,
-  hasShownEnhanceInfo,
-  firstRunTime,
-  isPhotosTabSortByName,
-  shouldProcessExifWifiOnly,
-  doubleTapExit,
-  memoriesRange,
-  saveEditResultToServer,
-  hasShownSaveEditResultDialog,
-  isSlideshowReverse,
-  seedColor,
-  isVideoPlayerMute,
-  isVideoPlayerLoop,
-
-  // account pref
-  isEnableFaceRecognitionApp,
-  shareFolder,
-  hasNewSharedAlbum,
-  isEnableMemoryAlbum,
-  touchRootEtag,
-  accountLabel,
-  lastNewCollectionType,
-}
-
-extension on PrefKey {
-  String toStringKey() {
-    switch (this) {
-      case PrefKey.accounts3:
-        return "accounts3";
-      case PrefKey.currentAccountIndex:
-        return "currentAccountIndex";
-      case PrefKey.homePhotosZoomLevel:
-        return "homePhotosZoomLevel";
-      case PrefKey.albumBrowserZoomLevel:
-        return "albumViewerZoomLevel";
-      case PrefKey.homeAlbumsSort:
-        return "homeAlbumsSort";
-      case PrefKey.enableExif:
-        return "isEnableExif";
-      case PrefKey.viewerScreenBrightness:
-        return "viewerScreenBrightness";
-      case PrefKey.viewerForceRotation:
-        return "viewerForceRotation";
-      case PrefKey.setupProgress:
-        return "setupProgress";
-      case PrefKey.lastVersion:
-        return "lastVersion";
-      case PrefKey.darkTheme:
-        return "isDarkTheme";
-      case PrefKey.followSystemTheme:
-        return "isFollowSystemTheme";
-      case PrefKey.useBlackInDarkTheme:
-        return "isUseBlackInDarkTheme";
-      case PrefKey.language:
-        return "language";
-      case PrefKey.labEnableSharedAlbum:
-        return "isLabEnableSharedAlbum";
-      case PrefKey.slideshowDuration:
-        return "slideshowDuration";
-      case PrefKey.isSlideshowShuffle:
-        return "isSlideshowShuffle";
-      case PrefKey.isSlideshowRepeat:
-        return "isSlideshowRepeat";
-      case PrefKey.isAlbumBrowserShowDate:
-        return "isAlbumBrowserShowDate";
-      case PrefKey.gpsMapProvider:
-        return "gpsMapProvider";
-      case PrefKey.hasShownSharedAlbumInfo:
-        return "hasShownSharedAlbumInfo";
-      case PrefKey.enhanceMaxWidth:
-        return "enhanceMaxWidth";
-      case PrefKey.enhanceMaxHeight:
-        return "enhanceMaxHeight";
-      case PrefKey.hasShownEnhanceInfo:
-        return "hasShownEnhanceInfo";
-      case PrefKey.firstRunTime:
-        return "firstRunTime";
-      case PrefKey.isPhotosTabSortByName:
-        return "isPhotosTabSortByName";
-      case PrefKey.shouldProcessExifWifiOnly:
-        return "shouldProcessExifWifiOnly";
-      case PrefKey.doubleTapExit:
-        return "doubleTapExit";
-      case PrefKey.memoriesRange:
-        return "memoriesRange";
-      case PrefKey.saveEditResultToServer:
-        return "saveEditResultToServer";
-      case PrefKey.hasShownSaveEditResultDialog:
-        return "hasShownSaveEditResultDialog";
-      case PrefKey.isSlideshowReverse:
-        return "isSlideshowReverse";
-      case PrefKey.seedColor:
-        return "seedColor";
-      case PrefKey.isVideoPlayerMute:
-        return "isVideoPlayerMute";
-      case PrefKey.isVideoPlayerLoop:
-        return "isVideoPlayerLoop";
-
-      // account pref
-      case PrefKey.isEnableFaceRecognitionApp:
-        return "isEnableFaceRecognitionApp";
-      case PrefKey.shareFolder:
-        return "shareFolder";
-      case PrefKey.hasNewSharedAlbum:
-        return "hasNewSharedAlbum";
-      case PrefKey.isEnableMemoryAlbum:
-        return "isEnableMemoryAlbum";
-      case PrefKey.touchRootEtag:
-        return "touchRootEtag";
-      case PrefKey.accountLabel:
-        return "accountLabel";
-      case PrefKey.lastNewCollectionType:
-        return "lastNewCollectionType";
-    }
-  }
-}
-
-extension PrefExtension on Pref {
-  Account? getCurrentAccount() {
-    try {
-      return Pref().getAccounts3()![Pref().getCurrentAccountIndex()!];
-    } catch (_) {
-      return null;
-    }
-  }
-}
diff --git a/app/lib/service.dart b/app/lib/service.dart
index a9eb5b28..5b73da8d 100644
--- a/app/lib/service.dart
+++ b/app/lib/service.dart
@@ -15,11 +15,11 @@ import 'package:nc_photos/entity/file.dart';
 import 'package:nc_photos/entity/file/data_source.dart';
 import 'package:nc_photos/entity/file_descriptor.dart';
 import 'package:nc_photos/entity/file_util.dart' as file_util;
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/event/event.dart';
 import 'package:nc_photos/event/native_event.dart';
 import 'package:nc_photos/future_extension.dart';
 import 'package:nc_photos/language_util.dart' as language_util;
-import 'package:nc_photos/pref.dart';
 import 'package:nc_photos/reverse_geocoder.dart';
 import 'package:nc_photos/use_case/update_missing_metadata.dart';
 import 'package:nc_photos_plugin/nc_photos_plugin.dart';
diff --git a/app/lib/theme.dart b/app/lib/theme.dart
index 8256930d..36280bd4 100644
--- a/app/lib/theme.dart
+++ b/app/lib/theme.dart
@@ -1,8 +1,8 @@
 import 'dart:ui';
 
 import 'package:flutter/material.dart';
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/material3.dart';
-import 'package:nc_photos/pref.dart';
 
 extension ThemeExtension on ThemeData {
   double get widthLimitedContentMaxWidth => 550.0;
diff --git a/app/lib/use_case/compat/v46.dart b/app/lib/use_case/compat/v46.dart
index 31a28125..4b025c69 100644
--- a/app/lib/use_case/compat/v46.dart
+++ b/app/lib/use_case/compat/v46.dart
@@ -1,6 +1,6 @@
 import 'package:logging/logging.dart';
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/entity/sqlite/database.dart' as sql;
-import 'package:nc_photos/pref.dart';
 import 'package:np_codegen/np_codegen.dart';
 
 part 'v46.g.dart';
diff --git a/app/lib/use_case/import_potential_shared_album.dart b/app/lib/use_case/import_potential_shared_album.dart
index f6917973..d589850d 100644
--- a/app/lib/use_case/import_potential_shared_album.dart
+++ b/app/lib/use_case/import_potential_shared_album.dart
@@ -3,7 +3,7 @@ import 'package:nc_photos/account.dart';
 import 'package:nc_photos/di_container.dart';
 import 'package:nc_photos/entity/album.dart';
 import 'package:nc_photos/entity/file_descriptor.dart';
-import 'package:nc_photos/pref.dart';
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/remote_storage_util.dart' as remote_storage_util;
 import 'package:nc_photos/use_case/list_potential_shared_album.dart';
 import 'package:nc_photos/use_case/move.dart';
diff --git a/app/lib/use_case/list_potential_shared_album.dart b/app/lib/use_case/list_potential_shared_album.dart
index 674ec53b..f730ffb5 100644
--- a/app/lib/use_case/list_potential_shared_album.dart
+++ b/app/lib/use_case/list_potential_shared_album.dart
@@ -4,7 +4,7 @@ import 'package:nc_photos/account.dart';
 import 'package:nc_photos/entity/file.dart';
 import 'package:nc_photos/entity/file_descriptor.dart';
 import 'package:nc_photos/entity/file_util.dart' as file_util;
-import 'package:nc_photos/pref.dart';
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/use_case/ls.dart';
 import 'package:np_codegen/np_codegen.dart';
 
diff --git a/app/lib/use_case/sync_favorite.dart b/app/lib/use_case/sync_favorite.dart
index 6293cd12..d6af2650 100644
--- a/app/lib/use_case/sync_favorite.dart
+++ b/app/lib/use_case/sync_favorite.dart
@@ -3,7 +3,7 @@ import 'package:nc_photos/account.dart';
 import 'package:nc_photos/di_container.dart';
 import 'package:nc_photos/entity/file.dart';
 import 'package:nc_photos/entity/file_util.dart' as file_util;
-import 'package:nc_photos/pref.dart';
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/use_case/cache_favorite.dart';
 import 'package:np_codegen/np_codegen.dart';
 
diff --git a/app/lib/widget/account_picker_dialog.dart b/app/lib/widget/account_picker_dialog.dart
index 907838bc..51dfb33b 100644
--- a/app/lib/widget/account_picker_dialog.dart
+++ b/app/lib/widget/account_picker_dialog.dart
@@ -16,6 +16,7 @@ import 'package:nc_photos/app_localizations.dart';
 import 'package:nc_photos/bloc_util.dart';
 import 'package:nc_photos/controller/account_controller.dart';
 import 'package:nc_photos/di_container.dart';
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/entity/server_status.dart';
 import 'package:nc_photos/entity/sqlite/database.dart' as sql;
 import 'package:nc_photos/event/event.dart';
@@ -23,7 +24,6 @@ import 'package:nc_photos/exception_event.dart';
 import 'package:nc_photos/exception_util.dart' as exception_util;
 import 'package:nc_photos/help_utils.dart' as help_util;
 import 'package:nc_photos/k.dart' as k;
-import 'package:nc_photos/pref.dart';
 import 'package:nc_photos/theme.dart';
 import 'package:nc_photos/toast.dart';
 import 'package:nc_photos/url_launcher_util.dart';
diff --git a/app/lib/widget/archive_browser.dart b/app/lib/widget/archive_browser.dart
index ff6f3284..e6881d65 100644
--- a/app/lib/widget/archive_browser.dart
+++ b/app/lib/widget/archive_browser.dart
@@ -12,11 +12,11 @@ import 'package:nc_photos/debug_util.dart';
 import 'package:nc_photos/di_container.dart';
 import 'package:nc_photos/entity/file.dart';
 import 'package:nc_photos/entity/file_descriptor.dart';
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/exception_util.dart' as exception_util;
 import 'package:nc_photos/k.dart' as k;
 import 'package:nc_photos/language_util.dart' as language_util;
 import 'package:nc_photos/object_extension.dart';
-import 'package:nc_photos/pref.dart';
 import 'package:nc_photos/snack_bar_manager.dart';
 import 'package:nc_photos/use_case/inflate_file_descriptor.dart';
 import 'package:nc_photos/use_case/update_property.dart';
diff --git a/app/lib/widget/collection_browser.dart b/app/lib/widget/collection_browser.dart
index 4b436001..aa723e45 100644
--- a/app/lib/widget/collection_browser.dart
+++ b/app/lib/widget/collection_browser.dart
@@ -32,6 +32,7 @@ import 'package:nc_photos/entity/collection_item/sorter.dart';
 import 'package:nc_photos/entity/collection_item/util.dart';
 import 'package:nc_photos/entity/file_descriptor.dart';
 import 'package:nc_photos/entity/file_util.dart' as file_util;
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/exception_event.dart';
 import 'package:nc_photos/exception_util.dart' as exception_util;
 import 'package:nc_photos/flutter_util.dart' as flutter_util;
diff --git a/app/lib/widget/enhanced_photo_browser.dart b/app/lib/widget/enhanced_photo_browser.dart
index f4a851b4..0eb64ee8 100644
--- a/app/lib/widget/enhanced_photo_browser.dart
+++ b/app/lib/widget/enhanced_photo_browser.dart
@@ -9,6 +9,7 @@ import 'package:nc_photos/compute_queue.dart';
 import 'package:nc_photos/di_container.dart';
 import 'package:nc_photos/entity/file_util.dart' as file_util;
 import 'package:nc_photos/entity/local_file.dart';
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/exception_util.dart' as exception_util;
 import 'package:nc_photos/iterable_extension.dart';
 import 'package:nc_photos/k.dart' as k;
@@ -16,7 +17,6 @@ import 'package:nc_photos/mobile/android/android_info.dart';
 import 'package:nc_photos/mobile/android/permission_util.dart';
 import 'package:nc_photos/object_extension.dart';
 import 'package:nc_photos/platform/k.dart' as platform_k;
-import 'package:nc_photos/pref.dart';
 import 'package:nc_photos/share_handler.dart';
 import 'package:nc_photos/snack_bar_manager.dart';
 import 'package:nc_photos/widget/empty_list_indicator.dart';
diff --git a/app/lib/widget/gps_map.dart b/app/lib/widget/gps_map.dart
index d84fa704..063d96f8 100644
--- a/app/lib/widget/gps_map.dart
+++ b/app/lib/widget/gps_map.dart
@@ -2,10 +2,10 @@ import 'package:flutter/material.dart';
 import 'package:flutter_map/flutter_map.dart';
 import 'package:latlong2/latlong.dart';
 import 'package:nc_photos/app_init.dart' as app_init;
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/mobile/platform.dart'
     if (dart.library.html) 'package:nc_photos/web/platform.dart' as platform;
 import 'package:nc_photos/platform/k.dart' as platform_k;
-import 'package:nc_photos/pref.dart';
 import 'package:nc_photos/url_launcher_util.dart';
 import 'package:tuple/tuple.dart';
 
diff --git a/app/lib/widget/handler/double_tap_exit_handler.dart b/app/lib/widget/handler/double_tap_exit_handler.dart
index 26d9a8cf..06d61785 100644
--- a/app/lib/widget/handler/double_tap_exit_handler.dart
+++ b/app/lib/widget/handler/double_tap_exit_handler.dart
@@ -1,8 +1,8 @@
 import 'package:clock/clock.dart';
 import 'package:flutter/material.dart';
 import 'package:nc_photos/app_localizations.dart';
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/k.dart' as k;
-import 'package:nc_photos/pref.dart';
 import 'package:nc_photos/snack_bar_manager.dart';
 
 class DoubleTapExitHandler {
diff --git a/app/lib/widget/home.dart b/app/lib/widget/home.dart
index 8dfc3777..eb9186e6 100644
--- a/app/lib/widget/home.dart
+++ b/app/lib/widget/home.dart
@@ -13,9 +13,9 @@ import 'package:nc_photos/entity/album.dart';
 import 'package:nc_photos/entity/album/data_source.dart';
 import 'package:nc_photos/entity/file.dart';
 import 'package:nc_photos/entity/file/data_source.dart';
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/k.dart' as k;
 import 'package:nc_photos/or_null.dart';
-import 'package:nc_photos/pref.dart';
 import 'package:nc_photos/theme.dart';
 import 'package:nc_photos/use_case/import_potential_shared_album.dart';
 import 'package:nc_photos/widget/home_collections.dart';
diff --git a/app/lib/widget/home_collections.dart b/app/lib/widget/home_collections.dart
index d1692355..19e7b2f1 100644
--- a/app/lib/widget/home_collections.dart
+++ b/app/lib/widget/home_collections.dart
@@ -19,12 +19,12 @@ import 'package:nc_photos/entity/collection.dart';
 import 'package:nc_photos/entity/collection/content_provider/album.dart';
 import 'package:nc_photos/entity/collection/content_provider/nc_album.dart';
 import 'package:nc_photos/entity/collection/util.dart' as collection_util;
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/exception_event.dart';
 import 'package:nc_photos/exception_util.dart' as exception_util;
 import 'package:nc_photos/k.dart' as k;
 import 'package:nc_photos/np_api_util.dart';
 import 'package:nc_photos/platform/features.dart' as features;
-import 'package:nc_photos/pref.dart';
 import 'package:nc_photos/snack_bar_manager.dart';
 import 'package:nc_photos/theme.dart';
 import 'package:nc_photos/widget/album_importer.dart';
diff --git a/app/lib/widget/home_photos.dart b/app/lib/widget/home_photos.dart
index 14cd0d65..2b520757 100644
--- a/app/lib/widget/home_photos.dart
+++ b/app/lib/widget/home_photos.dart
@@ -20,6 +20,7 @@ import 'package:nc_photos/di_container.dart';
 import 'package:nc_photos/download_handler.dart';
 import 'package:nc_photos/entity/collection.dart';
 import 'package:nc_photos/entity/file_descriptor.dart';
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/entity/sqlite/database.dart' as sql;
 import 'package:nc_photos/event/event.dart';
 import 'package:nc_photos/event/native_event.dart';
@@ -29,7 +30,6 @@ import 'package:nc_photos/language_util.dart' as language_util;
 import 'package:nc_photos/metadata_task_manager.dart';
 import 'package:nc_photos/object_extension.dart';
 import 'package:nc_photos/platform/k.dart' as platform_k;
-import 'package:nc_photos/pref.dart';
 import 'package:nc_photos/primitive.dart';
 import 'package:nc_photos/service.dart' as service;
 import 'package:nc_photos/share_handler.dart';
diff --git a/app/lib/widget/home_search.dart b/app/lib/widget/home_search.dart
index 7696dec1..cb2d9eaa 100644
--- a/app/lib/widget/home_search.dart
+++ b/app/lib/widget/home_search.dart
@@ -13,12 +13,12 @@ import 'package:nc_photos/di_container.dart';
 import 'package:nc_photos/download_handler.dart';
 import 'package:nc_photos/entity/file.dart';
 import 'package:nc_photos/entity/file_descriptor.dart';
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/entity/search.dart';
 import 'package:nc_photos/exception_util.dart' as exception_util;
 import 'package:nc_photos/k.dart' as k;
 import 'package:nc_photos/language_util.dart' as language_util;
 import 'package:nc_photos/object_extension.dart';
-import 'package:nc_photos/pref.dart';
 import 'package:nc_photos/share_handler.dart';
 import 'package:nc_photos/snack_bar_manager.dart';
 import 'package:nc_photos/theme.dart';
diff --git a/app/lib/widget/image_editor.dart b/app/lib/widget/image_editor.dart
index d58390e8..fbed72a6 100644
--- a/app/lib/widget/image_editor.dart
+++ b/app/lib/widget/image_editor.dart
@@ -9,6 +9,7 @@ import 'package:nc_photos/app_localizations.dart';
 import 'package:nc_photos/cache_manager_util.dart';
 import 'package:nc_photos/di_container.dart';
 import 'package:nc_photos/entity/file_descriptor.dart';
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/help_utils.dart' as help_util;
 import 'package:nc_photos/k.dart' as k;
 import 'package:nc_photos/material3.dart';
diff --git a/app/lib/widget/image_editor_persist_option_dialog.dart b/app/lib/widget/image_editor_persist_option_dialog.dart
index eb68dd6d..2197a586 100644
--- a/app/lib/widget/image_editor_persist_option_dialog.dart
+++ b/app/lib/widget/image_editor_persist_option_dialog.dart
@@ -5,6 +5,7 @@ import 'package:kiwi/kiwi.dart';
 import 'package:logging/logging.dart';
 import 'package:nc_photos/app_localizations.dart';
 import 'package:nc_photos/di_container.dart';
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/help_utils.dart' as help_util;
 import 'package:nc_photos/k.dart' as k;
 import 'package:nc_photos/snack_bar_manager.dart';
diff --git a/app/lib/widget/image_enhancer.dart b/app/lib/widget/image_enhancer.dart
index bbe1212e..a68b9b08 100644
--- a/app/lib/widget/image_enhancer.dart
+++ b/app/lib/widget/image_enhancer.dart
@@ -12,6 +12,7 @@ import 'package:nc_photos/app_localizations.dart';
 import 'package:nc_photos/di_container.dart';
 import 'package:nc_photos/entity/file_descriptor.dart';
 import 'package:nc_photos/entity/file_util.dart' as file_util;
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/help_utils.dart';
 import 'package:nc_photos/k.dart' as k;
 import 'package:nc_photos/mobile/android/android_info.dart';
diff --git a/app/lib/widget/my_app.dart b/app/lib/widget/my_app.dart
index 17f21325..4ded6b11 100644
--- a/app/lib/widget/my_app.dart
+++ b/app/lib/widget/my_app.dart
@@ -7,12 +7,12 @@ import 'package:logging/logging.dart';
 import 'package:nc_photos/controller/account_controller.dart';
 import 'package:nc_photos/controller/pref_controller.dart';
 import 'package:nc_photos/di_container.dart';
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/event/event.dart';
 import 'package:nc_photos/language_util.dart' as language_util;
 import 'package:nc_photos/legacy/connect.dart' as legacy;
 import 'package:nc_photos/legacy/sign_in.dart' as legacy;
 import 'package:nc_photos/navigation_manager.dart';
-import 'package:nc_photos/pref.dart';
 import 'package:nc_photos/snack_bar_manager.dart';
 import 'package:nc_photos/stream_util.dart';
 import 'package:nc_photos/theme.dart';
diff --git a/app/lib/widget/new_collection_dialog.dart b/app/lib/widget/new_collection_dialog.dart
index 491b2ccb..2beeefc0 100644
--- a/app/lib/widget/new_collection_dialog.dart
+++ b/app/lib/widget/new_collection_dialog.dart
@@ -17,13 +17,13 @@ import 'package:nc_photos/entity/collection/content_provider/album.dart';
 import 'package:nc_photos/entity/collection/content_provider/nc_album.dart';
 import 'package:nc_photos/entity/file.dart';
 import 'package:nc_photos/entity/nc_album.dart';
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/entity/tag.dart';
 import 'package:nc_photos/exception_event.dart';
 import 'package:nc_photos/exception_util.dart' as exception_util;
 import 'package:nc_photos/help_utils.dart' as help_util;
 import 'package:nc_photos/k.dart' as k;
 import 'package:nc_photos/object_extension.dart';
-import 'package:nc_photos/pref.dart';
 import 'package:nc_photos/toast.dart';
 import 'package:nc_photos/url_launcher_util.dart';
 import 'package:nc_photos/widget/album_dir_picker.dart';
diff --git a/app/lib/widget/result_viewer.dart b/app/lib/widget/result_viewer.dart
index 2ec984c7..e3096041 100644
--- a/app/lib/widget/result_viewer.dart
+++ b/app/lib/widget/result_viewer.dart
@@ -5,9 +5,9 @@ import 'package:nc_photos/account.dart';
 import 'package:nc_photos/app_localizations.dart';
 import 'package:nc_photos/di_container.dart';
 import 'package:nc_photos/entity/file.dart';
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/exception_util.dart' as exception_util;
 import 'package:nc_photos/k.dart' as k;
-import 'package:nc_photos/pref.dart';
 import 'package:nc_photos/snack_bar_manager.dart';
 import 'package:nc_photos/theme.dart';
 import 'package:nc_photos/use_case/ls_single_file.dart';
diff --git a/app/lib/widget/settings.dart b/app/lib/widget/settings.dart
index 968e47bb..aa9fe64d 100644
--- a/app/lib/widget/settings.dart
+++ b/app/lib/widget/settings.dart
@@ -7,6 +7,7 @@ import 'package:nc_photos/account.dart';
 import 'package:nc_photos/app_localizations.dart';
 import 'package:nc_photos/controller/pref_controller.dart';
 import 'package:nc_photos/debug_util.dart';
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/event/event.dart';
 import 'package:nc_photos/k.dart' as k;
 import 'package:nc_photos/language_util.dart' as language_util;
@@ -15,7 +16,6 @@ import 'package:nc_photos/mobile/platform.dart'
 import 'package:nc_photos/platform/features.dart' as features;
 import 'package:nc_photos/platform/k.dart' as platform_k;
 import 'package:nc_photos/platform/notification.dart';
-import 'package:nc_photos/pref.dart';
 import 'package:nc_photos/service.dart';
 import 'package:nc_photos/snack_bar_manager.dart';
 import 'package:nc_photos/stream_util.dart';
diff --git a/app/lib/widget/settings/account_settings.dart b/app/lib/widget/settings/account_settings.dart
index c3b8fe35..8143c425 100644
--- a/app/lib/widget/settings/account_settings.dart
+++ b/app/lib/widget/settings/account_settings.dart
@@ -10,6 +10,7 @@ import 'package:nc_photos/app_localizations.dart';
 import 'package:nc_photos/controller/account_controller.dart';
 import 'package:nc_photos/controller/account_pref_controller.dart';
 import 'package:nc_photos/di_container.dart';
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/exception_event.dart';
 import 'package:nc_photos/exception_util.dart' as exception_util;
 import 'package:nc_photos/k.dart' as k;
diff --git a/app/lib/widget/settings/expert_settings.dart b/app/lib/widget/settings/expert_settings.dart
index 5120f341..31f4ad29 100644
--- a/app/lib/widget/settings/expert_settings.dart
+++ b/app/lib/widget/settings/expert_settings.dart
@@ -7,6 +7,7 @@ import 'package:kiwi/kiwi.dart';
 import 'package:logging/logging.dart';
 import 'package:nc_photos/app_localizations.dart';
 import 'package:nc_photos/di_container.dart';
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/entity/sqlite/database.dart';
 import 'package:nc_photos/exception_util.dart' as exception_util;
 import 'package:nc_photos/k.dart' as k;
diff --git a/app/lib/widget/settings/theme_settings.dart b/app/lib/widget/settings/theme_settings.dart
index 013b763c..9cf13086 100644
--- a/app/lib/widget/settings/theme_settings.dart
+++ b/app/lib/widget/settings/theme_settings.dart
@@ -9,6 +9,7 @@ import 'package:kiwi/kiwi.dart';
 import 'package:logging/logging.dart';
 import 'package:nc_photos/app_localizations.dart';
 import 'package:nc_photos/di_container.dart';
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/event/event.dart';
 import 'package:nc_photos/k.dart' as k;
 import 'package:nc_photos/mobile/android/android_info.dart';
diff --git a/app/lib/widget/setup.dart b/app/lib/widget/setup.dart
index ef20e7ea..46bc7802 100644
--- a/app/lib/widget/setup.dart
+++ b/app/lib/widget/setup.dart
@@ -1,7 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:nc_photos/app_localizations.dart';
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/k.dart' as k;
-import 'package:nc_photos/pref.dart';
 import 'package:nc_photos/widget/home.dart';
 import 'package:nc_photos/widget/sign_in.dart';
 import 'package:page_view_indicators/circle_page_indicator.dart';
diff --git a/app/lib/widget/shared_album_info_dialog.dart b/app/lib/widget/shared_album_info_dialog.dart
index d0429471..40704be1 100644
--- a/app/lib/widget/shared_album_info_dialog.dart
+++ b/app/lib/widget/shared_album_info_dialog.dart
@@ -1,7 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:nc_photos/app_localizations.dart';
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/help_utils.dart' as help_utils;
-import 'package:nc_photos/pref.dart';
 import 'package:nc_photos/url_launcher_util.dart';
 
 class SharedAlbumInfoDialog extends StatefulWidget {
diff --git a/app/lib/widget/sharing_browser.dart b/app/lib/widget/sharing_browser.dart
index 76c3dd51..fe7b80c2 100644
--- a/app/lib/widget/sharing_browser.dart
+++ b/app/lib/widget/sharing_browser.dart
@@ -13,12 +13,12 @@ import 'package:nc_photos/entity/album/data_source.dart';
 import 'package:nc_photos/entity/collection/builder.dart';
 import 'package:nc_photos/entity/file.dart';
 import 'package:nc_photos/entity/file/data_source.dart';
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/entity/share.dart';
 import 'package:nc_photos/exception_util.dart' as exception_util;
 import 'package:nc_photos/k.dart' as k;
 import 'package:nc_photos/object_extension.dart';
 import 'package:nc_photos/or_null.dart';
-import 'package:nc_photos/pref.dart';
 import 'package:nc_photos/snack_bar_manager.dart';
 import 'package:nc_photos/use_case/import_potential_shared_album.dart';
 import 'package:nc_photos/widget/collection_browser.dart';
diff --git a/app/lib/widget/sign_in.dart b/app/lib/widget/sign_in.dart
index e92beb0a..1c96f460 100644
--- a/app/lib/widget/sign_in.dart
+++ b/app/lib/widget/sign_in.dart
@@ -7,11 +7,11 @@ import 'package:logging/logging.dart';
 import 'package:nc_photos/account.dart';
 import 'package:nc_photos/app_localizations.dart';
 import 'package:nc_photos/di_container.dart';
+import 'package:nc_photos/entity/pref.dart';
+import 'package:nc_photos/entity/pref_util.dart' as pref_util;
 import 'package:nc_photos/entity/sqlite/database.dart' as sql;
 import 'package:nc_photos/iterable_extension.dart';
 import 'package:nc_photos/legacy/sign_in.dart' as legacy;
-import 'package:nc_photos/pref.dart';
-import 'package:nc_photos/pref_util.dart' as pref_util;
 import 'package:nc_photos/theme.dart';
 import 'package:nc_photos/widget/connect.dart';
 import 'package:nc_photos/widget/home.dart';
diff --git a/app/lib/widget/splash.dart b/app/lib/widget/splash.dart
index 853f9354..48e20164 100644
--- a/app/lib/widget/splash.dart
+++ b/app/lib/widget/splash.dart
@@ -7,11 +7,11 @@ import 'package:kiwi/kiwi.dart';
 import 'package:logging/logging.dart';
 import 'package:nc_photos/app_localizations.dart';
 import 'package:nc_photos/di_container.dart';
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/entity/sqlite/database.dart' as sql;
 import 'package:nc_photos/k.dart' as k;
 import 'package:nc_photos/mobile/android/activity.dart';
 import 'package:nc_photos/platform/k.dart' as platform_k;
-import 'package:nc_photos/pref.dart';
 import 'package:nc_photos/use_case/compat/v29.dart';
 import 'package:nc_photos/use_case/compat/v46.dart';
 import 'package:nc_photos/use_case/compat/v55.dart';
diff --git a/app/lib/widget/trashbin_browser.dart b/app/lib/widget/trashbin_browser.dart
index ce3490d1..b48dd696 100644
--- a/app/lib/widget/trashbin_browser.dart
+++ b/app/lib/widget/trashbin_browser.dart
@@ -13,11 +13,11 @@ import 'package:nc_photos/debug_util.dart';
 import 'package:nc_photos/di_container.dart';
 import 'package:nc_photos/entity/file.dart';
 import 'package:nc_photos/entity/file_descriptor.dart';
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/exception_util.dart' as exception_util;
 import 'package:nc_photos/k.dart' as k;
 import 'package:nc_photos/language_util.dart' as language_util;
 import 'package:nc_photos/object_extension.dart';
-import 'package:nc_photos/pref.dart';
 import 'package:nc_photos/snack_bar_manager.dart';
 import 'package:nc_photos/use_case/inflate_file_descriptor.dart';
 import 'package:nc_photos/use_case/restore_trashbin.dart';
diff --git a/app/lib/widget/video_viewer.dart b/app/lib/widget/video_viewer.dart
index f4532ec5..6735d0bc 100644
--- a/app/lib/widget/video_viewer.dart
+++ b/app/lib/widget/video_viewer.dart
@@ -8,6 +8,7 @@ import 'package:nc_photos/api/api_util.dart' as api_util;
 import 'package:nc_photos/app_localizations.dart';
 import 'package:nc_photos/di_container.dart';
 import 'package:nc_photos/entity/file_descriptor.dart';
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/exception_util.dart' as exception_util;
 import 'package:nc_photos/k.dart' as k;
 import 'package:nc_photos/np_api_util.dart';
diff --git a/app/lib/widget/viewer.dart b/app/lib/widget/viewer.dart
index c857fe5e..31a2a661 100644
--- a/app/lib/widget/viewer.dart
+++ b/app/lib/widget/viewer.dart
@@ -19,12 +19,12 @@ import 'package:nc_photos/entity/collection/adapter.dart';
 import 'package:nc_photos/entity/collection_item.dart';
 import 'package:nc_photos/entity/file_descriptor.dart';
 import 'package:nc_photos/entity/file_util.dart' as file_util;
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/flutter_util.dart';
 import 'package:nc_photos/k.dart' as k;
 import 'package:nc_photos/notified_action.dart';
 import 'package:nc_photos/object_extension.dart';
 import 'package:nc_photos/platform/features.dart' as features;
-import 'package:nc_photos/pref.dart';
 import 'package:nc_photos/share_handler.dart';
 import 'package:nc_photos/snack_bar_manager.dart';
 import 'package:nc_photos/theme.dart';
diff --git a/app/lib/widget/viewer_mixin.dart b/app/lib/widget/viewer_mixin.dart
index 77da545b..09ab5431 100644
--- a/app/lib/widget/viewer_mixin.dart
+++ b/app/lib/widget/viewer_mixin.dart
@@ -4,8 +4,8 @@ import 'package:flutter/services.dart';
 import 'package:flutter/widgets.dart';
 import 'package:logging/logging.dart';
 import 'package:native_device_orientation/native_device_orientation.dart';
+import 'package:nc_photos/entity/pref.dart';
 import 'package:nc_photos/platform/k.dart' as platform_k;
-import 'package:nc_photos/pref.dart';
 import 'package:nc_photos/throttler.dart';
 import 'package:nc_photos/widget/disposable.dart';
 import 'package:np_codegen/np_codegen.dart';
diff --git a/app/test/use_case/add_file_to_album_test.dart b/app/test/use_case/add_file_to_album_test.dart
index 60453206..eff1015d 100644
--- a/app/test/use_case/add_file_to_album_test.dart
+++ b/app/test/use_case/add_file_to_album_test.dart
@@ -8,8 +8,9 @@ import 'package:nc_photos/entity/album/item.dart';
 import 'package:nc_photos/entity/album/provider.dart';
 import 'package:nc_photos/entity/album/sort_provider.dart';
 import 'package:nc_photos/entity/file.dart';
+import 'package:nc_photos/entity/pref.dart';
+import 'package:nc_photos/entity/pref/provider/memory.dart';
 import 'package:nc_photos/entity/sqlite/database.dart' as sql;
-import 'package:nc_photos/pref.dart';
 import 'package:nc_photos/use_case/album/add_file_to_album.dart';
 import 'package:np_common/ci_string.dart';
 import 'package:test/test.dart';
diff --git a/app/test/use_case/remove_album_test.dart b/app/test/use_case/remove_album_test.dart
index f88a8af7..49fa83a5 100644
--- a/app/test/use_case/remove_album_test.dart
+++ b/app/test/use_case/remove_album_test.dart
@@ -1,8 +1,9 @@
 import 'package:event_bus/event_bus.dart';
 import 'package:kiwi/kiwi.dart';
 import 'package:nc_photos/di_container.dart';
+import 'package:nc_photos/entity/pref.dart';
+import 'package:nc_photos/entity/pref/provider/memory.dart';
 import 'package:nc_photos/entity/sqlite/database.dart' as sql;
-import 'package:nc_photos/pref.dart';
 import 'package:nc_photos/use_case/album/remove_album.dart';
 import 'package:test/test.dart';
 
diff --git a/app/test/use_case/remove_test.dart b/app/test/use_case/remove_test.dart
index e82b08e1..0b333527 100644
--- a/app/test/use_case/remove_test.dart
+++ b/app/test/use_case/remove_test.dart
@@ -5,9 +5,10 @@ import 'package:nc_photos/entity/album.dart';
 import 'package:nc_photos/entity/album/cover_provider.dart';
 import 'package:nc_photos/entity/album/provider.dart';
 import 'package:nc_photos/entity/album/sort_provider.dart';
+import 'package:nc_photos/entity/pref.dart';
+import 'package:nc_photos/entity/pref/provider/memory.dart';
 import 'package:nc_photos/entity/sqlite/database.dart' as sql;
 import 'package:nc_photos/or_null.dart';
-import 'package:nc_photos/pref.dart';
 import 'package:nc_photos/use_case/remove.dart';
 import 'package:test/test.dart';