diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0bb427e8e..44e928144 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,11 +10,16 @@
 ## 12.x.x (unreleased)
 
 ### Improvements
+- クライアント: 画像ビューアを強化
 - クライアント: メンションにユーザーのアバターを表示するように
 - クライアント: デザインの調整
 - クライアント: twemojiをセルフホスティングするように
 
 ### Bugfixes
+- クライアント: CWで画像が隠されたとき、画像の高さがおかしいことになる問題を修正
+
+### NOTE
+- このバージョンから、iOS 15未満のサポートがされなくなります。対象のバージョンをお使いの方は、iOSのバージョンアップを行ってください。
 
 ## 12.93.2 (2021/10/23)
 
diff --git a/package.json b/package.json
index 3d43caba6..0e231aa3b 100644
--- a/package.json
+++ b/package.json
@@ -183,6 +183,7 @@
 		"os-utils": "0.0.14",
 		"parse5": "6.0.1",
 		"pg": "8.7.1",
+		"photoswipe": "git://github.com/dimsemenov/photoswipe#v5-beta",
 		"portscanner": "2.2.0",
 		"postcss": "8.3.11",
 		"postcss-loader": "6.2.0",
diff --git a/src/client/components/media-image.vue b/src/client/components/media-image.vue
index 863eb1027..fd5e0b5f9 100644
--- a/src/client/components/media-image.vue
+++ b/src/client/components/media-image.vue
@@ -12,7 +12,6 @@
 	<a
 		:href="image.url"
 		:title="image.name"
-		@click.prevent="onClick"
 	>
 		<ImgWithBlurhash :hash="image.blurhash" :src="url" :alt="image.comment" :title="image.comment" :cover="false"/>
 		<div class="gif" v-if="image.type === 'image/gif'">GIF</div>
@@ -73,17 +72,6 @@ export default defineComponent({
 			immediate: true,
 		});
 	},
-	methods: {
-		onClick() {
-			if (this.$store.state.imageNewTab) {
-				window.open(this.image.url, '_blank');
-			} else {
-				os.popup(ImageViewer, {
-					image: this.image
-				}, {}, 'closed');
-			}
-		}
-	}
 });
 </script>
 
diff --git a/src/client/components/media-list.vue b/src/client/components/media-list.vue
index 71767a0f9..c1ec6147f 100644
--- a/src/client/components/media-list.vue
+++ b/src/client/components/media-list.vue
@@ -1,11 +1,11 @@
 <template>
-<div class="mk-media-list">
+<div class="hoawjimk">
 	<XBanner v-for="media in mediaList.filter(media => !previewable(media))" :media="media" :key="media.id"/>
-	<div v-if="mediaList.filter(media => previewable(media)).length > 0" class="gird-container" ref="gridOuter">
-		<div :data-count="mediaList.filter(media => previewable(media)).length" :style="gridInnerStyle">
+	<div v-if="mediaList.filter(media => previewable(media)).length > 0" class="gird-container">
+		<div :data-count="mediaList.filter(media => previewable(media)).length" ref="gallery">
 			<template v-for="media in mediaList">
 				<XVideo :video="media" :key="media.id" v-if="media.type.startsWith('video')"/>
-				<XImage :image="media" :key="media.id" v-else-if="media.type.startsWith('image')" :raw="raw"/>
+				<XImage class="image" :data-id="media.id" :image="media" :key="media.id" v-else-if="media.type.startsWith('image')" :raw="raw"/>
 			</template>
 		</div>
 	</div>
@@ -13,11 +13,16 @@
 </template>
 
 <script lang="ts">
-import { defineComponent } from 'vue';
+import { defineComponent, onMounted, PropType, ref } from 'vue';
+import * as misskey from 'misskey-js';
+import PhotoSwipeLightbox from 'photoswipe/dist/photoswipe-lightbox.esm.js';
+import PhotoSwipe from 'photoswipe/dist/photoswipe.esm.js';
+import 'photoswipe/dist/photoswipe.css';
 import XBanner from './media-banner.vue';
 import XImage from './media-image.vue';
 import XVideo from './media-video.vue';
 import * as os from '@client/os';
+import { defaultStore } from '@client/store';
 
 export default defineComponent({
 	components: {
@@ -27,63 +32,65 @@ export default defineComponent({
 	},
 	props: {
 		mediaList: {
-			required: true
+			type: Array as PropType<misskey.entities.DriveFile[]>,
+			required: true,
 		},
 		raw: {
 			default: false
 		},
 	},
-	data() {
-		return {
-			gridInnerStyle: {},
-			sizeWaiting: false
-		}
-	},
-	mounted() {
-		this.size();
-		window.addEventListener('resize', this.size);
-	},
-	beforeUnmount() {
-		window.removeEventListener('resize', this.size);
-	},
-	activated() {
-		this.size();
-	},
-	methods: {
-		previewable(file) {
-			return file.type.startsWith('video') || file.type.startsWith('image');
-		},
-		size() {
-			// for Safari bug
-			if (this.sizeWaiting) return;
+	setup(props) {
+		const gallery = ref(null);
 
-			this.sizeWaiting = true;
-
-			window.requestAnimationFrame(() => {
-				this.sizeWaiting = false;
-
-				if (this.$refs.gridOuter) {
-					let height = 287;
-					const parent = this.$parent.$el;
-
-					if (this.$refs.gridOuter.clientHeight) {
-						height = this.$refs.gridOuter.clientHeight;
-					} else if (parent) {
-						height = parent.getBoundingClientRect().width * 9 / 16;
-					}
-
-					this.gridInnerStyle = { height: `${height}px` };
-				} else {
-					this.gridInnerStyle = {};
-				}
+		onMounted(() => {
+			const lightbox = new PhotoSwipeLightbox({
+				dataSource: props.mediaList.filter(media => media.type.startsWith('image')).map(media => ({
+					src: media.url,
+					w: media.properties.width,
+					h: media.properties.height,
+					alt: media.name,
+				})),
+				gallery: gallery.value,
+				children: '.image',
+				thumbSelector: '.image',
+				pswpModule: PhotoSwipe
 			});
-		}
+
+			lightbox.on('itemData', (e) => {
+				const { itemData } = e;
+
+				// element is children
+				const { element } = itemData;
+
+				console.log(element);
+
+				const id = element.dataset.id;
+				const file = props.mediaList.find(media => media.id === id);
+
+				itemData.src = file.url;
+				itemData.w = Number(file.properties.width);
+				itemData.h = Number(file.properties.height);
+				itemData.msrc = file.thumbnailUrl;
+				itemData.thumbCropped = true;
+			});
+
+			lightbox.init();
+		});
+
+		const previewable = (file: misskey.entities.DriveFile): boolean => {
+			return file.type.startsWith('video') || file.type.startsWith('image');
+		};
+
+		return {
+			previewable,
+			gallery,
+		};
 	},
 });
 </script>
 
 <style lang="scss" scoped>
-.mk-media-list {
+.hoawjimk {
 	> .gird-container {
 		position: relative;
 		width: 100%;
diff --git a/yarn.lock b/yarn.lock
index 4a0ac63f5..e29de996b 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -8271,6 +8271,10 @@ pgpass@1.x:
   dependencies:
     split "^1.0.0"
 
+"photoswipe@git://github.com/dimsemenov/photoswipe#v5-beta":
+  version "5.1.7"
+  resolved "git://github.com/dimsemenov/photoswipe#60040164333bd257409669e715e4327afdb3aec7"
+
 picocolors@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/picocolors/-/picocolors-1.0.0.tgz#cb5bdc74ff3f51892236eaf79d68bc44564ab81c"