diff --git a/lib/components/gallery_info.dart b/lib/components/gallery_info.dart
index 6a90bba..ff0304a 100644
--- a/lib/components/gallery_info.dart
+++ b/lib/components/gallery_info.dart
@@ -1,3 +1,4 @@
+import 'dart:math';
 import 'dart:ui';
 import 'package:flutter/material.dart';
 import 'package:go_router/go_router.dart';
@@ -65,7 +66,18 @@ class _GalleryInfo extends State<GalleryInfo> with ThemeModeWidget {
 
   @override
   Widget build(BuildContext context) {
-    bool useMobile = MediaQuery.of(context).size.width <= 810;
+    final maxWidth = MediaQuery.of(context).size.width;
+    bool useMobile = maxWidth <= 810;
+    final thumb = prefs.getInt("thumbnailSize") ?? 1;
+    final tsize = (thumb >= 0 && thumb < ThumbnailSize.values.length
+            ? ThumbnailSize.values[thumb]
+            : ThumbnailSize.medium)
+        .size;
+    final max = maxWidth > 810
+        ? tsize
+        : maxWidth >= 400
+            ? min(tsize, ThumbnailSize.medium.size)
+            : ThumbnailSize.smail.size;
     final firstPage = widget.gData.pages.firstOrNull;
     final int? firstFileId = widget.files != null && firstPage != null
         ? widget.files!.files[firstPage!.token]!.firstOrNull?.id
@@ -134,14 +146,11 @@ class _GalleryInfo extends State<GalleryInfo> with ThemeModeWidget {
             : SliverToBoxAdapter(child: Container()),
         ThumbnailGridView(
             widget.gData,
-            useMobile
-                ? const SliverGridDelegateWithFixedCrossAxisCount(
-                    crossAxisCount: 2)
-                : const SliverGridDelegateWithMaxCrossAxisExtent(
-                    maxCrossAxisExtent: 400,
-                    childAspectRatio: 1,
-                    crossAxisSpacing: 10,
-                    mainAxisSpacing: 10),
+            SliverGridDelegateWithMaxCrossAxisExtent(
+                maxCrossAxisExtent: max.toDouble(),
+                childAspectRatio: 1,
+                crossAxisSpacing: 10,
+                mainAxisSpacing: 10),
             files: widget.files,
             gid: widget.gData.meta.gid,
             isSelectMode: widget.isSelectMode,
diff --git a/lib/components/thumbnail_gridview.dart b/lib/components/thumbnail_gridview.dart
index b43b0ae..c9d24f4 100644
--- a/lib/components/thumbnail_gridview.dart
+++ b/lib/components/thumbnail_gridview.dart
@@ -15,7 +15,7 @@ class ThumbnailGridView extends StatelessWidget {
   final GalleryData gdata;
   final int? gid;
   final EhFiles? files;
-  final SliverGridDelegate gridDelegate;
+  final SliverGridDelegateWithMaxCrossAxisExtent gridDelegate;
   final bool isSelectMode;
   final List<String>? selected;
   final Function? onSelectedChange;
@@ -25,12 +25,7 @@ class ThumbnailGridView extends StatelessWidget {
     final displayAd = prefs.getBool("displayAd") ?? false;
     final npages =
         displayAd ? gdata.pages : gdata.pages.where((e) => !e.isAd).toList();
-    final maxWidth = MediaQuery.of(context).size.width;
-    final baseSize = maxWidth > 810
-        ? 400
-        : maxWidth < 400
-            ? 200
-            : 300;
+    final baseSize = gridDelegate.maxCrossAxisExtent.toInt();
     final max = (baseSize * MediaQuery.of(context).devicePixelRatio).toInt();
     return SliverGrid.builder(
         gridDelegate: gridDelegate,
diff --git a/lib/globals.dart b/lib/globals.dart
index 30a6566..0d23ed7 100644
--- a/lib/globals.dart
+++ b/lib/globals.dart
@@ -339,6 +339,27 @@ enum Lang {
   }
 }
 
+enum ThumbnailSize {
+  smail(200),
+  medium(300),
+  big(400);
+
+  const ThumbnailSize(this.size);
+  final int size;
+
+  String localText(BuildContext context) {
+    final i18n = AppLocalizations.of(context)!;
+    switch (this) {
+      case ThumbnailSize.smail:
+        return i18n.smail;
+      case ThumbnailSize.medium:
+        return i18n.medium;
+      case ThumbnailSize.big:
+        return i18n.big;
+    }
+  }
+}
+
 final _authLog = Logger("AuthLog");
 
 void clearAllStates(BuildContext context) {
diff --git a/lib/l10n/app_en.arb b/lib/l10n/app_en.arb
index 41c18dc..60869f5 100644
--- a/lib/l10n/app_en.arb
+++ b/lib/l10n/app_en.arb
@@ -244,5 +244,9 @@
     "createExportZipTask": "Create export as ZIP file task",
     "outputDir": "Output directory",
     "copyOriImgUrl": "Copy original image URL to clipboard",
-    "importTask": "Import task"
+    "importTask": "Import task",
+    "thumbnailSize": "Thumbnail size",
+    "smail": "smail",
+    "medium": "medium",
+    "big": "big"
 }
diff --git a/lib/l10n/app_zh.arb b/lib/l10n/app_zh.arb
index 413a5b6..56e1a0d 100644
--- a/lib/l10n/app_zh.arb
+++ b/lib/l10n/app_zh.arb
@@ -244,5 +244,9 @@
     "createExportZipTask": "新建导出为ZIP文件任务",
     "outputDir": "输出文件夹",
     "copyOriImgUrl": "复制原图链接到剪贴板",
-    "importTask": "导入任务"
+    "importTask": "导入任务",
+    "thumbnailSize": "缩略图大小",
+    "smail": "小",
+    "medium": "中",
+    "big": "大"
 }
diff --git a/lib/pages/settings/display.dart b/lib/pages/settings/display.dart
index 23e03d4..dd732a9 100644
--- a/lib/pages/settings/display.dart
+++ b/lib/pages/settings/display.dart
@@ -26,6 +26,7 @@ class _DisplaySettingsPage extends State<DisplaySettingsPage>
   bool _oriShowTranslatedTag = false;
   bool _oriUseTitleJpn = false;
   bool _oriDlUseAvgSpeed = false;
+  ThumbnailSize _oriThumbnailSize = ThumbnailSize.medium;
   bool _displayAd = false;
   Lang _lang = Lang.system;
   bool _preventScreenCapture = false;
@@ -33,6 +34,7 @@ class _DisplaySettingsPage extends State<DisplaySettingsPage>
   bool _showTranslatedTag = false;
   bool _useTitleJpn = false;
   bool _dlUseAvgSpeed = false;
+  ThumbnailSize _thumbnailSize = ThumbnailSize.medium;
   @override
   void initState() {
     super.initState();
@@ -93,6 +95,15 @@ class _DisplaySettingsPage extends State<DisplaySettingsPage>
       _oriDlUseAvgSpeed = false;
       _dlUseAvgSpeed = false;
     }
+    try {
+      _oriThumbnailSize =
+          ThumbnailSize.values[prefs.getInt("thumbnailSize") ?? 1];
+      _thumbnailSize = _oriThumbnailSize;
+    } catch (e) {
+      _log.warning("Failed to get thumbnailSize:", e);
+      _oriThumbnailSize = ThumbnailSize.medium;
+      _thumbnailSize = ThumbnailSize.medium;
+    }
   }
 
   void fallback(BuildContext context) {
@@ -111,6 +122,7 @@ class _DisplaySettingsPage extends State<DisplaySettingsPage>
       _showTranslatedTag = _oriLang.toLocale().languageCode == "zh";
       _preventScreenCapture = false;
       _dlUseAvgSpeed = false;
+      _thumbnailSize = ThumbnailSize.medium;
     });
   }
 
@@ -179,6 +191,14 @@ class _DisplaySettingsPage extends State<DisplaySettingsPage>
         _oriDlUseAvgSpeed = _dlUseAvgSpeed;
       }
     }
+    if (_thumbnailSize != _oriThumbnailSize) {
+      if (!await prefs.setInt("thumbnailSize", _thumbnailSize.index)) {
+        re = false;
+        _log.warning("Failed to save thumbnailSize");
+      } else {
+        _oriThumbnailSize = _thumbnailSize;
+      }
+    }
     return re;
   }
 
@@ -328,6 +348,27 @@ class _DisplaySettingsPage extends State<DisplaySettingsPage>
                                 child: Text(i18n.dlUseAvgSpeed),
                               ),
                             ),
+                            Container(
+                                padding:
+                                    const EdgeInsets.symmetric(vertical: 8),
+                                child: DropdownMenu<ThumbnailSize>(
+                                  initialSelection: _thumbnailSize,
+                                  onSelected: (value) {
+                                    if (value != null) {
+                                      setState(() {
+                                        _thumbnailSize = value;
+                                      });
+                                    }
+                                  },
+                                  label: Text(i18n.thumbnailSize),
+                                  dropdownMenuEntries: ThumbnailSize.values
+                                      .map((e) => DropdownMenuEntry(
+                                          value: e,
+                                          label: e.localText(context)))
+                                      .toList(),
+                                  leadingIcon: const Icon(Icons.photo_rounded),
+                                  width: 250,
+                                )),
                             Row(
                               mainAxisAlignment: MainAxisAlignment.center,
                               children: [