diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1ed930437e..d2e6702a92 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -26,11 +26,13 @@
 - Enhance: リアクション選択時に音を鳴らせるように
 - Enhance: サウンドにドライブのファイルを使用できるように
 - Enhance: Shareページで投稿を完了すると、親ウィンドウ（親フレーム）にpostMessageするように
+- Enhance: チャンネル、クリップ、ページ、Play、ギャラリーにURLのコピーボタンを設置 #11305
 - fix: 「設定のバックアップ」で一部の項目がバックアップに含まれていなかった問題を修正
 - Fix: ウィジェットのジョブキューにて音声の発音方法変更に追従できていなかったのを修正 #12367
 - Fix: コードエディタが正しく表示されない問題を修正
 - Fix: プロフィールの「ファイル」にセンシティブな画像がある際のデザインを修正
 - Fix: 一度に大量の通知が入った際に通知音が音割れする問題を修正
+- Fix: 共有機能をサポートしていないブラウザの場合は共有ボタンを非表示にする #11305
 - Fix: 通知のグルーピング設定を変更してもリロードされるまで表示が変わらない問題を修正 #12470
 
 ### Server
diff --git a/packages/frontend/src/components/global/MkPageHeader.vue b/packages/frontend/src/components/global/MkPageHeader.vue
index 580816abaa..935ca33eb5 100644
--- a/packages/frontend/src/components/global/MkPageHeader.vue
+++ b/packages/frontend/src/components/global/MkPageHeader.vue
@@ -48,16 +48,12 @@ import { scrollToTop } from '@/scripts/scroll.js';
 import { globalEvents } from '@/events.js';
 import { injectPageMetadata } from '@/scripts/page-metadata.js';
 import { $i, openAccountMenu as openAccountMenu_ } from '@/account.js';
+import { PageHeaderItem } from '@/types/page-header.js';
 
 const props = withDefaults(defineProps<{
 	tabs?: Tab[];
 	tab?: string;
-	actions?: {
-		text: string;
-		icon: string;
-		highlighted?: boolean;
-		handler: (ev: MouseEvent) => void;
-	}[];
+	actions?: PageHeaderItem[];
 	thin?: boolean;
 	displayMyAvatar?: boolean;
 }>(), {
diff --git a/packages/frontend/src/pages/channel.vue b/packages/frontend/src/pages/channel.vue
index 1d41fe7529..dc374e2925 100644
--- a/packages/frontend/src/pages/channel.vue
+++ b/packages/frontend/src/pages/channel.vue
@@ -86,6 +86,9 @@ import { defaultStore } from '@/store.js';
 import MkNote from '@/components/MkNote.vue';
 import MkInfo from '@/components/MkInfo.vue';
 import MkFoldableSection from '@/components/MkFoldableSection.vue';
+import { PageHeaderItem } from '@/types/page-header.js';
+import { isSupportShare } from '@/scripts/navigator.js';
+import copyToClipboard from '@/scripts/copy-to-clipboard.js';
 
 const router = useRouter();
 
@@ -167,24 +170,40 @@ async function search() {
 
 const headerActions = $computed(() => {
 	if (channel && channel.userId) {
-		const share = {
-			icon: 'ti ti-share',
-			text: i18n.ts.share,
-			handler: async (): Promise<void> => {
-				navigator.share({
-					title: channel.name,
-					text: channel.description,
-					url: `${url}/channels/${channel.id}`,
-				});
-			},
-		};
+		const headerItems: PageHeaderItem[] = [];
 
-		const canEdit = ($i && $i.id === channel.userId) || iAmModerator;
-		return canEdit ? [share, {
-			icon: 'ti ti-settings',
-			text: i18n.ts.edit,
-			handler: edit,
-		}] : [share];
+		headerItems.push({
+			icon: 'ti ti-link',
+			text: i18n.ts.copyUrl,
+			handler: async (): Promise<void> => {
+				copyToClipboard(`${url}/channels/${channel.id}`);
+				os.success();
+			},
+		});
+
+		if (isSupportShare()) {
+			headerItems.push({
+				icon: 'ti ti-share',
+				text: i18n.ts.share,
+				handler: async (): Promise<void> => {
+					navigator.share({
+						title: channel.name,
+						text: channel.description,
+						url: `${url}/channels/${channel.id}`,
+					});
+				},
+			});
+		}
+
+		if (($i && $i.id === channel.userId) || iAmModerator) {
+			headerItems.push({
+				icon: 'ti ti-settings',
+				text: i18n.ts.edit,
+				handler: edit,
+			});
+		}
+
+		return headerItems.length > 0 ? headerItems : null;
 	} else {
 		return null;
 	}
diff --git a/packages/frontend/src/pages/clip.vue b/packages/frontend/src/pages/clip.vue
index 4573bbb81c..b32c8a3864 100644
--- a/packages/frontend/src/pages/clip.vue
+++ b/packages/frontend/src/pages/clip.vue
@@ -36,6 +36,8 @@ import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { url } from '@/config.js';
 import MkButton from '@/components/MkButton.vue';
 import { clipsCache } from '@/cache';
+import { isSupportShare } from '@/scripts/navigator.js';
+import copyToClipboard from '@/scripts/copy-to-clipboard.js';
 
 const props = defineProps<{
 	clipId: string,
@@ -118,6 +120,13 @@ const headerActions = $computed(() => clip && isOwned ? [{
 		clipsCache.delete();
 	},
 }, ...(clip.isPublic ? [{
+	icon: 'ti ti-link',
+	text: i18n.ts.copyUrl,
+	handler: async (): Promise<void> => {
+		copyToClipboard(`${url}/clips/${clip.id}`);
+		os.success();
+	},
+}] : []), ...(clip.isPublic && isSupportShare() ? [{
 	icon: 'ti ti-share',
 	text: i18n.ts.share,
 	handler: async (): Promise<void> => {
diff --git a/packages/frontend/src/pages/flash/flash.vue b/packages/frontend/src/pages/flash/flash.vue
index ebf117ffbf..4755eb5062 100644
--- a/packages/frontend/src/pages/flash/flash.vue
+++ b/packages/frontend/src/pages/flash/flash.vue
@@ -18,7 +18,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 							<MkButton v-if="flash.isLiked" v-tooltip="i18n.ts.unlike" asLike class="button" rounded primary @click="unlike()"><i class="ti ti-heart"></i><span v-if="flash.likedCount > 0" style="margin-left: 6px;">{{ flash.likedCount }}</span></MkButton>
 							<MkButton v-else v-tooltip="i18n.ts.like" asLike class="button" rounded @click="like()"><i class="ti ti-heart"></i><span v-if="flash.likedCount > 0" style="margin-left: 6px;">{{ flash.likedCount }}</span></MkButton>
 							<MkButton v-tooltip="i18n.ts.shareWithNote" class="button" rounded @click="shareWithNote"><i class="ti ti-repeat ti-fw"></i></MkButton>
-							<MkButton v-tooltip="i18n.ts.share" class="button" rounded @click="share"><i class="ti ti-share ti-fw"></i></MkButton>
+							<MkButton v-tooltip="i18n.ts.copyLink" class="button" rounded @click="copyLink"><i class="ti ti-link ti-fw"></i></MkButton>
+							<MkButton v-if="isSupportShare()" v-tooltip="i18n.ts.share" class="button" rounded @click="share"><i class="ti ti-share ti-fw"></i></MkButton>
 						</div>
 					</div>
 					<div v-else :class="$style.ready">
@@ -70,6 +71,8 @@ import MkFolder from '@/components/MkFolder.vue';
 import MkCode from '@/components/MkCode.vue';
 import { defaultStore } from '@/store.js';
 import { $i } from '@/account.js';
+import { isSupportShare } from '@/scripts/navigator.js';
+import copyToClipboard from '@/scripts/copy-to-clipboard.js';
 
 const props = defineProps<{
 	id: string;
@@ -89,6 +92,11 @@ function fetchFlash() {
 	});
 }
 
+function copyLink() {
+	copyToClipboard(`${url}/play/${flash.id}`);
+	os.success();
+}
+
 function share() {
 	navigator.share({
 		title: flash.title,
diff --git a/packages/frontend/src/pages/gallery/post.vue b/packages/frontend/src/pages/gallery/post.vue
index 3863348eae..5b551f75b5 100644
--- a/packages/frontend/src/pages/gallery/post.vue
+++ b/packages/frontend/src/pages/gallery/post.vue
@@ -29,7 +29,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 							<div class="other">
 								<button v-if="$i && $i.id === post.user.id" v-tooltip="i18n.ts.edit" v-click-anime class="_button" @click="edit"><i class="ti ti-pencil ti-fw"></i></button>
 								<button v-tooltip="i18n.ts.shareWithNote" v-click-anime class="_button" @click="shareWithNote"><i class="ti ti-repeat ti-fw"></i></button>
-								<button v-tooltip="i18n.ts.share" v-click-anime class="_button" @click="share"><i class="ti ti-share ti-fw"></i></button>
+								<button v-tooltip="i18n.ts.copyLink" v-click-anime class="_button" @click="copyLink"><i class="ti ti-link ti-fw"></i></button>
+								<button v-if="isSupportShare()" v-tooltip="i18n.ts.share" v-click-anime class="_button" @click="share"><i class="ti ti-share ti-fw"></i></button>
 							</div>
 						</div>
 						<div class="user">
@@ -74,6 +75,8 @@ import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { defaultStore } from '@/store.js';
 import { $i } from '@/account.js';
+import { isSupportShare } from '@/scripts/navigator.js';
+import copyToClipboard from '@/scripts/copy-to-clipboard.js';
 
 const router = useRouter();
 
@@ -102,6 +105,11 @@ function fetchPost() {
 	});
 }
 
+function copyLink() {
+	copyToClipboard(`${url}/gallery/${post.id}`);
+	os.success();
+}
+
 function share() {
 	navigator.share({
 		title: post.title,
diff --git a/packages/frontend/src/pages/page.vue b/packages/frontend/src/pages/page.vue
index 98cbaab2bb..2bc053ccfe 100644
--- a/packages/frontend/src/pages/page.vue
+++ b/packages/frontend/src/pages/page.vue
@@ -34,7 +34,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 						</div>
 						<div class="other">
 							<button v-tooltip="i18n.ts.shareWithNote" v-click-anime class="_button" @click="shareWithNote"><i class="ti ti-repeat ti-fw"></i></button>
-							<button v-tooltip="i18n.ts.share" v-click-anime class="_button" @click="share"><i class="ti ti-share ti-fw"></i></button>
+							<button v-tooltip="i18n.ts.copyLink" v-click-anime class="_button" @click="copyLink"><i class="ti ti-link ti-fw"></i></button>
+							<button v-if="isSupportShare()" v-tooltip="i18n.ts.share" v-click-anime class="_button" @click="share"><i class="ti ti-share ti-fw"></i></button>
 						</div>
 					</div>
 					<div class="user">
@@ -90,6 +91,8 @@ import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { pageViewInterruptors, defaultStore } from '@/store.js';
 import { deepClone } from '@/scripts/clone.js';
 import { $i } from '@/account.js';
+import { isSupportShare } from '@/scripts/navigator.js';
+import copyToClipboard from '@/scripts/copy-to-clipboard.js';
 
 const props = defineProps<{
 	pageName: string;
@@ -136,6 +139,11 @@ function share() {
 	});
 }
 
+function copyLink() {
+	copyToClipboard(`${url}/@${page.user.username}/pages/${page.name}`);
+	os.success();
+}
+
 function shareWithNote() {
 	os.post({
 		initialText: `${page.title || page.name} ${url}/@${page.user.username}/pages/${page.name}`,
diff --git a/packages/frontend/src/scripts/get-note-menu.ts b/packages/frontend/src/scripts/get-note-menu.ts
index d0753872ff..763f6ff513 100644
--- a/packages/frontend/src/scripts/get-note-menu.ts
+++ b/packages/frontend/src/scripts/get-note-menu.ts
@@ -18,6 +18,7 @@ import { getUserMenu } from '@/scripts/get-user-menu.js';
 import { clipsCache } from '@/cache.js';
 import { MenuItem } from '@/types/menu.js';
 import MkRippleEffect from '@/components/MkRippleEffect.vue';
+import { isSupportShare } from '@/scripts/navigator.js';
 
 export async function getNoteClipMenu(props: {
 	note: Misskey.entities.Note;
@@ -280,11 +281,11 @@ export function getNoteMenu(props: {
 					window.open(appearNote.url ?? appearNote.uri, '_blank');
 				},
 			} : undefined,
-			{
+			...(isSupportShare() ? [{
 				icon: 'ti ti-share',
 				text: i18n.ts.share,
 				action: share,
-			},
+			}] : []),
 			$i && $i.policies.canUseTranslator && instance.translatorAvailable ? {
 				icon: 'ti ti-language-hiragana',
 				text: i18n.ts.translate,
@@ -484,7 +485,7 @@ export function getRenoteMenu(props: {
 		}]);
 	}
 
-	if (!appearNote.channel || appearNote.channel?.allowRenoteToExternal) {
+	if (!appearNote.channel || appearNote.channel.allowRenoteToExternal) {
 		normalRenoteItems.push(...[{
 			text: i18n.ts.renote,
 			icon: 'ti ti-repeat',
diff --git a/packages/frontend/src/scripts/navigator.ts b/packages/frontend/src/scripts/navigator.ts
new file mode 100644
index 0000000000..b13186a10e
--- /dev/null
+++ b/packages/frontend/src/scripts/navigator.ts
@@ -0,0 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and other misskey contributors
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+export function isSupportShare(): boolean {
+	return 'share' in navigator;
+}
diff --git a/packages/frontend/src/types/page-header.ts b/packages/frontend/src/types/page-header.ts
new file mode 100644
index 0000000000..295b97a7fd
--- /dev/null
+++ b/packages/frontend/src/types/page-header.ts
@@ -0,0 +1,11 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and other misskey contributors
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+export type PageHeaderItem = {
+    text: string;
+    icon: string;
+    highlighted?: boolean;
+    handler: (ev: MouseEvent) => void;
+};