diff --git a/locales/en-US.yml b/locales/en-US.yml
index 9ce6ee5cdb..772e6f35da 100644
--- a/locales/en-US.yml
+++ b/locales/en-US.yml
@@ -1029,6 +1029,9 @@ noteIdOrUrl: "Note ID or URL"
 video: "Video"
 videos: "Videos"
 dataSaver: "Data Saver"
+cellularWithDataSaver: "Turn on Data Saver in Mobile Data Communications"
+UltimatedataSaver: "Ultimate Data Saver"
+cellularWithUltimateDataSaver: "Turn on Ultimate Data Saver in Mobile Data Communications"
 accountMigration: "Account Migration"
 accountMoved: "This user has moved to a new account:"
 accountMovedShort: "This account has been migrated."
diff --git a/locales/index.d.ts b/locales/index.d.ts
index 2f8437f52a..32df226912 100644
--- a/locales/index.d.ts
+++ b/locales/index.d.ts
@@ -1033,6 +1033,8 @@ export interface Locale {
     "videos": string;
     "dataSaver": string;
     "cellularWithDataSaver": string;
+    "UltimateDataSaver": string;
+    "cellularWithUltimateDataSaver": string;
     "accountMigration": string;
     "accountMoved": string;
     "accountMovedShort": string;
diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index b92aa0ec81..7cad2361bf 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -1030,6 +1030,8 @@ video: "動画"
 videos: "動画"
 dataSaver: "データセーバー"
 cellularWithDataSaver: "モバイルデータ通信でデータセーバーをオンにする"
+UltimateDataSaver: "究極のデータセーバー"
+cellularWithUltimateDataSaver: "モバイルデータ通信で究極のデータセーバーをオンにする"
 accountMigration: "アカウントの移行"
 accountMoved: "このユーザーは新しいアカウントに移行しました："
 accountMovedShort: "このアカウントは移行されています"
diff --git a/packages/backend/src/server/FileServerService.ts b/packages/backend/src/server/FileServerService.ts
index 54b50041fd..247ef73de8 100644
--- a/packages/backend/src/server/FileServerService.ts
+++ b/packages/backend/src/server/FileServerService.ts
@@ -341,7 +341,7 @@ export class FileServerService {
 				} else {
 					const data = (await sharpBmp(file.path, file.mime, { animated: !('static' in request.query) }))
 						.resize({
-							height: 64,
+							height: 32,
 							withoutEnlargement: true,
 						})
 						.webp(webpDefault);
diff --git a/packages/frontend/src/components/MkInstanceTicker.vue b/packages/frontend/src/components/MkInstanceTicker.vue
index 3215d87ddf..c702b6403b 100644
--- a/packages/frontend/src/components/MkInstanceTicker.vue
+++ b/packages/frontend/src/components/MkInstanceTicker.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <div :class="$style.root" :style="bg">
-	<img v-if="faviconUrl && !defaultStore.state.enableDataSaverMode" :class="$style.icon" :src="faviconUrl"/>
+	<img v-if="faviconUrl && !defaultStore.state.enableUltimateDataSaverMode" :class="$style.icon" :src="faviconUrl"/>
 	<div :class="$style.name">{{ instance.name }}</div>
 </div>
 </template>
diff --git a/packages/frontend/src/components/global/MkAvatar.vue b/packages/frontend/src/components/global/MkAvatar.vue
index 788e4ec9af..72768dd171 100644
--- a/packages/frontend/src/components/global/MkAvatar.vue
+++ b/packages/frontend/src/components/global/MkAvatar.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <component :is="link ? MkA : 'span'" v-user-preview="preview ? user.id : undefined" v-bind="bound" class="_noSelect" :class="[$style.root, { [$style.animation]: animation, [$style.cat]: user.isCat, [$style.square]: squareAvatars }]" :style="{ color }" :title="acct(user)" @click="onClick">
-	<MkImgWithBlurhash :class="$style.inner" :src="defaultStore.state.enableDataSaverMode ? undefined : url" :hash="user?.avatarBlurhash" :cover="true" :onlyAvgColor="true"/>
+	<MkImgWithBlurhash :class="$style.inner" :src="defaultStore.state.enableUltimateDataSaverMode ? undefined : url" :hash="user?.avatarBlurhash" :cover="true" :onlyAvgColor="true"/>
 	<MkUserOnlineIndicator v-if="indicator" :class="$style.indicator" :user="user"/>
 	<div v-if="user.isCat" :class="[$style.ears]">
 		<div :class="$style.earLeft">
diff --git a/packages/frontend/src/components/global/MkCustomEmoji.vue b/packages/frontend/src/components/global/MkCustomEmoji.vue
index b01a172a60..4029bfa855 100644
--- a/packages/frontend/src/components/global/MkCustomEmoji.vue
+++ b/packages/frontend/src/components/global/MkCustomEmoji.vue
@@ -39,7 +39,7 @@ const rawUrl = computed(() => {
 const url = computed(() => {
 	if (rawUrl.value == null) return null;
   const useOriginalSize = props.useOriginalSize;
-  const enableDataSaverMode = defaultStore.state.enableDataSaverMode;
+  const enableDataSaverMode = defaultStore.state.enableUltimateDataSaverMode;
   let datasaver_result ;
   if (enableDataSaverMode) {
     datasaver_result = useOriginalSize ? undefined : 'datasaver';
diff --git a/packages/frontend/src/pages/settings/general.vue b/packages/frontend/src/pages/settings/general.vue
index e5b0d7b63f..962b800d40 100644
--- a/packages/frontend/src/pages/settings/general.vue
+++ b/packages/frontend/src/pages/settings/general.vue
@@ -113,8 +113,10 @@ SPDX-License-Identifier: AGPL-3.0-only
 				<MkSwitch v-model="useSystemFont">{{ i18n.ts.useSystemFont }}</MkSwitch>
 				<MkSwitch v-model="disableDrawer">{{ i18n.ts.disableDrawer }}</MkSwitch>
 				<MkSwitch v-model="forceShowAds">{{ i18n.ts.forceShowAds }}</MkSwitch>
-				<MkSwitch v-model="enableDataSaverMode">{{ i18n.ts.dataSaver }}</MkSwitch>
-				<MkSwitch v-model="enableCellularWithDataSaver">{{ i18n.ts.cellularWithDataSaver }}</MkSwitch>
+				<MkSwitch :disabled="enableUltimateDataSaverMode || enableCellularWithUltimateDataSaver" v-model="enableDataSaverMode">{{ i18n.ts.dataSaver }}</MkSwitch>
+				<MkSwitch :disabled="enableUltimateDataSaverMode || enableCellularWithUltimateDataSaver" v-model="enableCellularWithDataSaver">{{ i18n.ts.cellularWithDataSaver }}</MkSwitch>
+				<MkSwitch v-model="enableUltimateDataSaverMode">{{ i18n.ts.UltimateDataSaver }}</MkSwitch>
+				<MkSwitch v-model="enableCellularWithUltimateDataSaver">{{ i18n.ts.cellularWithUltimateDataSaver }}</MkSwitch>
 			</div>
 			<div>
 				<MkRadios v-model="emojiStyle">
@@ -230,6 +232,8 @@ const forceShowAds = computed(defaultStore.makeGetterSetter('forceShowAds'));
 const loadRawImages = computed(defaultStore.makeGetterSetter('loadRawImages'));
 const enableDataSaverMode = computed(defaultStore.makeGetterSetter('enableDataSaverMode')) ;
 const enableCellularWithDataSaver = computed(defaultStore.makeGetterSetter('enableCellularWithDataSaver'));
+const enableUltimateDataSaverMode = computed(defaultStore.makeGetterSetter('enableUltimateDataSaverMode'))
+const enableCellularWithUltimateDataSaver = computed(defaultStore.makeGetterSetter('enableCellularWithUltimateDataSaver'));
 const imageNewTab = computed(defaultStore.makeGetterSetter('imageNewTab'));
 const nsfw = computed(defaultStore.makeGetterSetter('nsfw'));
 const showFixedPostForm = computed(defaultStore.makeGetterSetter('showFixedPostForm'));
@@ -244,6 +248,8 @@ const notificationPosition = computed(defaultStore.makeGetterSetter('notificatio
 const notificationStackAxis = computed(defaultStore.makeGetterSetter('notificationStackAxis'));
 const showTimelineReplies = computed(defaultStore.makeGetterSetter('showTimelineReplies'));
 
+
+
 watch(lang, () => {
 	miLocalStorage.setItem('lang', lang.value as string);
 	miLocalStorage.removeItem('locale');
diff --git a/packages/frontend/src/store.ts b/packages/frontend/src/store.ts
index 06aabba7f6..0b16391777 100644
--- a/packages/frontend/src/store.ts
+++ b/packages/frontend/src/store.ts
@@ -204,10 +204,18 @@ export const defaultStore = markRaw(new Storage('base', {
 		where: 'device',
 		default: false,
 	},
+	enableUltimateDataSaverMode: {
+		where: 'device',
+		default: false,
+	},
 	enableCellularWithDataSaver: {
 		where: 'device',
 		default: false,
 	},
+    enableCellularWithUltimateDataSaver: {
+        where: 'device',
+        default: false,
+    },
 	disableShowingAnimatedImages: {
 		where: 'device',
 		default: window.matchMedia('(prefers-reduced-motion)').matches,
diff --git a/packages/frontend/src/ui/universal.vue b/packages/frontend/src/ui/universal.vue
index 1bede0c14c..7fc8043dd8 100644
--- a/packages/frontend/src/ui/universal.vue
+++ b/packages/frontend/src/ui/universal.vue
@@ -130,6 +130,18 @@ const DESKTOP_THRESHOLD = 1100;
 const MOBILE_THRESHOLD = 500;
 
 onMounted(() => {
+  if (
+      window.navigator.connection.type === "cellular" &&
+      !defaultStore.state.enableUltimateDataSaverMode &&
+      defaultStore.state.enableCellularWithUltimateDataSaver
+  ) {
+    defaultStore.state.enableDataSaverMode = true;
+    defaultStore.state.enableUltimateDataSaverMode = true;
+  } else if (window.navigator.connection.type !== "cellular" && window.navigator.connection.type !== "undefined" && defaultStore.state.enableDataSaverMode && defaultStore.state.enableCellularWithDataSaver) {
+    defaultStore.state.enableDataSaverMode = false;
+    defaultStore.state.enableUltimateDataSaverMode = true;
+  }
+
   if (
       window.navigator.connection.type === "cellular" &&
       !defaultStore.state.enableDataSaverMode &&
@@ -140,6 +152,9 @@ onMounted(() => {
   } else if (window.navigator.connection.type !== "cellular" && window.navigator.connection.type !== "undefined" && defaultStore.state.enableDataSaverMode && defaultStore.state.enableCellularWithDataSaver) {
     defaultStore.state.enableDataSaverMode = false;
   }
+  if (defaultStore.state.enableUltimateDataSaverMode) {
+    defaultStore.state.enableDataSaverMode = true;
+  }
 });
 // デスクトップでウィンドウを狭くしたときモバイルUIが表示されて欲しいことはあるので deviceKind === 'desktop' の判定は行わない
 const isDesktop = ref(window.innerWidth >= DESKTOP_THRESHOLD);
diff --git a/packages/frontend/vite.config.ts b/packages/frontend/vite.config.ts
index 637ae677b8..abd483bbe8 100644
--- a/packages/frontend/vite.config.ts
+++ b/packages/frontend/vite.config.ts
@@ -50,7 +50,7 @@ export function getConfig(): UserConfig {
 		},
 
 		plugins: [
-			compression(),
+			compression({ algorithm: 'brotliCompress'}),
 			pluginVue({
 				reactivityTransform: true,
 			}),