diff --git a/locales/index.d.ts b/locales/index.d.ts
index c31a3f4e83..2040d55628 100644
--- a/locales/index.d.ts
+++ b/locales/index.d.ts
@@ -12548,6 +12548,20 @@ export interface Locale extends ILocale {
          */
         "listDrafts": string;
     };
+    /**
+     * 二次元コード
+     */
+    "qr": string;
+    "_qr": {
+        /**
+         * 表示
+         */
+        "showTabTitle": string;
+        /**
+         * 読み取る
+         */
+        "readTabTitle": string;
+    };
 }
 declare const locales: {
     [lang: string]: Locale;
diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index 522f53ce4d..cf26446a4d 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -3359,3 +3359,8 @@ _drafts:
   restoreFromDraft: "下書きから復元"
   restore: "復元"
   listDrafts: "下書き一覧"
+
+qr: 二次元コード
+_qr:
+  showTabTitle: "表示"
+  readTabTitle: "読み取る"
diff --git a/packages/frontend/package.json b/packages/frontend/package.json
index 952af75d97..682429baad 100644
--- a/packages/frontend/package.json
+++ b/packages/frontend/package.json
@@ -63,6 +63,7 @@
 		"misskey-reversi": "workspace:*",
 		"photoswipe": "5.4.4",
 		"punycode.js": "2.3.1",
+		"qr-code-styling": "1.9.2",
 		"rollup": "4.48.0",
 		"sanitize-html": "2.17.0",
 		"sass": "1.90.0",
diff --git a/packages/frontend/src/directives/flip-on-device-orientation.ts b/packages/frontend/src/directives/flip-on-device-orientation.ts
new file mode 100644
index 0000000000..767d42a480
--- /dev/null
+++ b/packages/frontend/src/directives/flip-on-device-orientation.ts
@@ -0,0 +1,44 @@
+import type { Directive } from 'vue';
+
+let initialized = false;
+let styleEl: HTMLStyleElement | null = null;
+const elements = new Set<HTMLElement>();
+const className = '_flipOnDeviceOrientation';
+const variableName = `--flip_on_device_orientation_transform`;
+
+function handleOrientationChange() {
+	const isUpsideDown = window.screen.orientation.type === 'landscape-secondary';
+	const transform = isUpsideDown ? 'scale(-1, -1)' : '';
+	window.document.body.style.setProperty(variableName, transform);
+}
+
+function registerListener() {
+	if (!initialized) {
+		screen.orientation.addEventListener('change', handleOrientationChange);
+		if (!styleEl) {
+			styleEl = window.document.createElement('style');
+			styleEl.textContent = `.${className} { transform: var(${variableName}); }`;
+			window.document.head.appendChild(styleEl);
+		}
+		initialized = true;
+	} else if (window.document.getElementsByClassName(className).length === 0) {
+		screen.orientation.removeEventListener('change', handleOrientationChange);
+		if (styleEl) {
+			window.document.head.removeChild(styleEl);
+			styleEl = null;
+		}
+		initialized = false;
+	}
+}
+
+export default {
+	mounted(el) {
+		registerListener();
+		el.classList.add(className);
+		handleOrientationChange();
+	},
+	unmounted(el) {
+		el.classList.remove(className);
+		registerListener();
+	},
+} as Directive;
diff --git a/packages/frontend/src/directives/index.ts b/packages/frontend/src/directives/index.ts
index 9555045afe..c6948d8c06 100644
--- a/packages/frontend/src/directives/index.ts
+++ b/packages/frontend/src/directives/index.ts
@@ -16,6 +16,7 @@ import clickAnime from './click-anime.js';
 import panel from './panel.js';
 import adaptiveBorder from './adaptive-border.js';
 import adaptiveBg from './adaptive-bg.js';
+import flipOnDeviceOrientation from './flip-on-device-orientation.js';
 
 export default function(app: App) {
 	for (const [key, value] of Object.entries(directives)) {
@@ -36,4 +37,5 @@ export const directives = {
 	'panel': panel,
 	'adaptive-border': adaptiveBorder,
 	'adaptive-bg': adaptiveBg,
+	'flip-on-device-orientation': flipOnDeviceOrientation,
 };
diff --git a/packages/frontend/src/pages/qr.read.vue b/packages/frontend/src/pages/qr.read.vue
new file mode 100644
index 0000000000..5cf8c6dee1
--- /dev/null
+++ b/packages/frontend/src/pages/qr.read.vue
@@ -0,0 +1,21 @@
+<!--
+SPDX-FileCopyrightText: syuilo and misskey-project
+SPDX-License-Identifier: AGPL-3.0-only
+-->
+
+<template>
+<div :class="$style.root">
+	TODO
+</div>
+</template>
+
+<script lang="ts" setup>
+import { ensureSignin } from '@/i';
+
+const $i = ensureSignin();
+</script>
+
+<style lang="scss" module>
+.root {
+}
+</style>
diff --git a/packages/frontend/src/pages/qr.show.vue b/packages/frontend/src/pages/qr.show.vue
new file mode 100644
index 0000000000..75544c0ce1
--- /dev/null
+++ b/packages/frontend/src/pages/qr.show.vue
@@ -0,0 +1,179 @@
+<!--
+SPDX-FileCopyrightText: syuilo and misskey-project
+SPDX-License-Identifier: AGPL-3.0-only
+-->
+
+<template>
+<div :class="$style.root" :style="{ backgroundColor: bgColor }">
+	<div :class="$style.content" class="_spacer" :style="{ '--MI_SPACER-w': '512px' }">
+		<div :class="$style.qrOuter">
+			<div v-flip-on-device-orientation ref="qrCodeEl" :class="$style.qrInner"></div>
+		</div>
+		<div :class="$style.user">
+			<MkAvatar v-flip-on-device-orientation :class="$style.avatar" :user="$i" :indicator="false"/>
+			<div :class="$style.names">
+				<div v-flip-on-device-orientation :class="$style.username"><MkCondensedLine :minScale="2 / 3">@{{ $i.username }}@{{ host }}</MkCondensedLine></div>
+				<div v-flip-on-device-orientation :class="$style.name"><MkCondensedLine :minScale="2 / 3">{{ userName($i) }}</MkCondensedLine></div>
+			</div>
+		</div>
+		<img v-flip-on-device-orientation :class="$style.logo" :src="misskeysvg" alt="Misskey Logo"/>
+	</div>
+</div>
+</template>
+
+<script lang="ts" setup>
+import { extractAvgColorFromBlurhash } from '@@/js/extract-avg-color-from-blurhash';
+import tinycolor from 'tinycolor2';
+import QRCodeStyling from 'qr-code-styling';
+import { computed, ref, watch } from 'vue';
+import { host } from '@@/js/config.js';
+import { instance } from '@/instance';
+import { ensureSignin } from '@/i';
+import { userPage, userName } from '@/filters/user';
+import misskeysvg from '/client-assets/misskey.svg';
+
+const $i = ensureSignin();
+
+const qrCodeEl = ref<HTMLDivElement | null>(null);
+
+const avatarColor = computed(() => tinycolor(
+	$i.avatarBlurhash ?
+		extractAvgColorFromBlurhash($i.avatarBlurhash)
+		: instance.themeColor
+		?? '#86b300',
+));
+const avatarHsl = computed(() => avatarColor.value.toHsl());
+const bgColor = tinycolor(`hsl(${avatarHsl.value.h}, 60, 46)`).toRgbString();
+
+watch([qrCodeEl, avatarHsl], () => {
+	const qrCodeInstance = new QRCodeStyling({
+		width: 512,
+		height: 512,
+		margin: 40,
+		type: 'canvas',
+		data: userPage($i, undefined, true),
+		image: instance.iconUrl ?? '/favicon.ico',
+		qrOptions: {
+			typeNumber: 0,
+			mode: 'Byte',
+			errorCorrectionLevel: 'H',
+		},
+		imageOptions: {
+			hideBackgroundDots: true,
+			imageSize: 0.3,
+			margin: 8,
+			crossOrigin: 'anonymous',
+		},
+		dotsOptions: {
+			color: tinycolor(`hsl(${avatarHsl.value.h}, 100, 18)`).toRgbString(),
+			gradient: {
+				type: 'linear',
+				rotation: 1, // radian
+				colorStops: [
+					{ offset: 0, color: tinycolor(`hsl(${avatarHsl.value.h}, 100, 6)`).toRgbString() },
+					{ offset: 0.5, color: tinycolor(`hsl(${avatarHsl.value.h}, 100, 18)`).toRgbString() },
+					{ offset: 1, color: tinycolor(`hsl(${avatarHsl.value.h}, 100, 25)`).toRgbString() },
+				],
+			},
+			type: 'classy-rounded',
+		},
+		backgroundOptions: {
+			color: tinycolor(`hsl(${avatarHsl.value.h}, 100, 97)`).toRgbString(),
+		},
+	});
+
+	if (qrCodeEl.value != null) {
+		qrCodeInstance.append(qrCodeEl.value);
+	}
+}, { immediate: true });
+
+</script>
+
+<style lang="scss" module>
+.root {
+	margin-top: calc( -1 * var(--MI-stickyTop) );
+  padding-top: var(--MI-stickyTop);
+	height: calc( 100dvh - var(--MI-stickyTop) - var(--MI-stickyBottom) );
+}
+
+.content {
+	display: flex;
+	flex-direction: column;
+	align-items: center;
+	margin: 0 auto;
+}
+
+.qrOuter {
+	display: flex;
+}
+
+.qrInner {
+	width: 100%;
+	max-height: 40dvh;
+	margin: 5dvh auto 2dvh;
+
+	> svg,
+	> canvas {
+		max-width: 100%;
+		max-height: 100%;
+	}
+}
+
+$avatarSize: 58px;
+
+.user {
+	display: flex;
+	margin: 2dvh auto;
+	justify-content: center;
+	align-items: center;
+	overflow: clip;
+	width: fit-content;
+	max-width: 100%;
+}
+
+.avatar {
+	width: $avatarSize;
+	height: $avatarSize;
+	margin-right: 8px;
+}
+
+.names {
+	display: flex;
+	font-weight: bold;
+	flex-direction: column;
+	justify-content: center;
+	align-items: start;
+	margin-top: -4px;
+	max-width: 100%;
+	overflow: hidden;
+}
+
+.name {
+	display: inline-block;
+	color: #fff;
+	font-size: 20px;
+	line-height: 24px;
+	width: fit-content;
+	max-width: calc(100% - 16px);
+	overflow: hidden;
+	padding-right: 16px;
+	mask-image: linear-gradient(90deg,#000,#000 calc(100% - 16px),#0000);
+}
+
+.username {
+	display: inline-block;
+	color: rgba(255, 255, 255, 0.7);
+	font-size: 14px;
+	line-height: 16px;
+	width: fit-content;
+	max-width: calc(100% - 16px);
+	overflow: hidden;
+	padding-right: 16px;
+	mask-image: linear-gradient(90deg,#000,#000 calc(100% - 16px),#0000);
+}
+
+.logo {
+	width: 30%;
+	margin: 2dvh auto 0;
+}
+</style>
diff --git a/packages/frontend/src/pages/qr.vue b/packages/frontend/src/pages/qr.vue
new file mode 100644
index 0000000000..123534ac2b
--- /dev/null
+++ b/packages/frontend/src/pages/qr.vue
@@ -0,0 +1,44 @@
+<!--
+SPDX-FileCopyrightText: syuilo and misskey-project
+SPDX-License-Identifier: AGPL-3.0-only
+-->
+
+<template>
+<PageWithHeader v-model:tab="tab" :tabs="headerTabs" :swipable="true" :style="{ overflow: tab === 'show' ? 'clip' : undefined }">
+	<MkQrShow v-if="tab === 'show'"/>
+	<MkQrRead v-else-if="tab === 'read'"/>
+	<MkError v-else-if="error" :error="error"/>
+	<MkLoading v-else/>
+</PageWithHeader>
+</template>
+
+<script lang="ts" setup>
+import { defineAsyncComponent, ref, shallowRef } from 'vue';
+import { definePage } from '@/page.js';
+import { i18n } from '@/i18n.js';
+import { ensureSignin } from '@/i';
+
+// router definitionでloginRequiredが設定されているためエラーハンドリングしない
+const $i = ensureSignin();
+
+const tab = ref<'read' | 'show'>('show');
+const error = ref<any>(null);
+
+const MkQrShow = defineAsyncComponent(() => import('./qr.show.vue'));
+const MkQrRead = defineAsyncComponent(() => import('./qr.read.vue'));
+
+const headerTabs = [{
+	key: 'show',
+	title: i18n.ts._qr.showTabTitle,
+	icon: 'ti ti-qrcode',
+}, {
+	key: 'read',
+	title: i18n.ts._qr.readTabTitle,
+	icon: 'ti ti-scan',
+}];
+
+definePage(() => ({
+	title: i18n.ts.qr,
+	icon: 'ti ti-qrcode',
+}));
+</script>
diff --git a/packages/frontend/src/router.definition.ts b/packages/frontend/src/router.definition.ts
index e25e0fe161..d59c9d1c6f 100644
--- a/packages/frontend/src/router.definition.ts
+++ b/packages/frontend/src/router.definition.ts
@@ -590,6 +590,10 @@ export const ROUTE_DEF = [{
 	path: '/reversi/g/:gameId',
 	component: page(() => import('@/pages/reversi/game.vue')),
 	loginRequired: false,
+}, {
+	path: '/qr',
+	component: page(() => import('@/pages/qr.vue')),
+	loginRequired: true,
 }, {
 	path: '/debug',
 	component: page(() => import('@/pages/debug.vue')),
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 66f42b70e3..40c660ce0a 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -844,6 +844,9 @@ importers:
       punycode.js:
         specifier: 2.3.1
         version: 2.3.1
+      qr-code-styling:
+        specifier: 1.9.2
+        version: 1.9.2
       rollup:
         specifier: 4.48.0
         version: 4.48.0
@@ -9508,6 +9511,13 @@ packages:
     resolution: {integrity: sha512-pMpnA0qRdFp32b1sJl1wOJNxZLQ2cbQx+k6tjNtZ8CpvVhNqEPRgivZ2WOUev2YMajecdH7ctUPDvEe87nariQ==}
     engines: {node: '>=6.0.0'}
 
+  qr-code-styling@1.9.2:
+    resolution: {integrity: sha512-RgJaZJ1/RrXJ6N0j7a+pdw3zMBmzZU4VN2dtAZf8ZggCfRB5stEQ3IoDNGaNhYY3nnZKYlYSLl5YkfWN5dPutg==}
+    engines: {node: '>=18.18.0'}
+
+  qrcode-generator@1.5.2:
+    resolution: {integrity: sha512-pItrW0Z9HnDBnFmgiNrY1uxRdri32Uh9EjNYLPVC2zZ3ZRIIEqBoDgm4DkvDwNNDHTK7FNkmr8zAa77BYc9xNw==}
+
   qrcode@1.5.4:
     resolution: {integrity: sha512-1ca71Zgiu6ORjHqFBDpnSMTR2ReToX4l1Au1VFLyVeBTFavzQnv5JxMFr3ukHVKpSrSA2MCk0lNJSykjUfz7Zg==}
     engines: {node: '>=10.13.0'}
@@ -21080,6 +21090,12 @@ snapshots:
 
   pvutils@1.1.3: {}
 
+  qr-code-styling@1.9.2:
+    dependencies:
+      qrcode-generator: 1.5.2
+
+  qrcode-generator@1.5.2: {}
+
   qrcode@1.5.4:
     dependencies:
       dijkstrajs: 1.0.2