diff --git a/packages/client/src/pages/gallery/post.vue b/packages/client/src/pages/gallery/post.vue
index 43d3651b81..a4be9e85fa 100644
--- a/packages/client/src/pages/gallery/post.vue
+++ b/packages/client/src/pages/gallery/post.vue
@@ -24,7 +24,7 @@
 							<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="ph-pencil-bold ph-lg ph-fw ph-lg"></i></button>
 								<button v-tooltip="i18n.ts.shareWithNote" v-click-anime class="_button" @click="shareWithNote"><i class="ph-repeat-bold ph-lg ph-fw ph-lg"></i></button>
-								<button v-tooltip="i18n.ts.share" v-click-anime class="_button" @click="share"><i class="ph-share-network-bold ph-lg ph-fw ph-lg"></i></button>
+								<button v-if="shareAvailable()" v-tooltip="i18n.ts.share" v-click-anime class="_button" @click="share"><i class="ph-share-network-bold ph-lg ph-fw ph-lg"></i></button>
 							</div>
 						</div>
 						<div class="user">
@@ -67,6 +67,7 @@ import { url } from '@/config';
 import { useRouter } from '@/router';
 import { i18n } from '@/i18n';
 import { definePageMetadata } from '@/scripts/page-metadata';
+import { shareAvailable } from '@/scripts/share-available';
 
 const router = useRouter();
 
diff --git a/packages/client/src/pages/page.vue b/packages/client/src/pages/page.vue
index 2497db950e..e89fd3e2a8 100644
--- a/packages/client/src/pages/page.vue
+++ b/packages/client/src/pages/page.vue
@@ -34,7 +34,7 @@
 						</div>
 						<div class="other">
 							<button v-tooltip="i18n.ts.shareWithNote" v-click-anime class="_button" @click="shareWithNote"><i class="ph-repeat-bold ph-lg ph-fw ph-lg"></i></button>
-							<button v-tooltip="i18n.ts.share" v-click-anime class="_button" @click="share"><i class="ph-share-network-bold ph-lg ph-fw ph-lg"></i></button>
+							<button v-if="shareAvailable()" v-tooltip="i18n.ts.share" v-click-anime class="_button" @click="share"><i class="ph-share-network-bold ph-lg ph-fw ph-lg"></i></button>
 						</div>
 						<div class="user">
 							<MkAvatar :user="page.user" class="avatar"/>
@@ -81,6 +81,7 @@ import MkPagination from '@/components/MkPagination.vue';
 import MkPagePreview from '@/components/MkPagePreview.vue';
 import { i18n } from '@/i18n';
 import { definePageMetadata } from '@/scripts/page-metadata';
+import { shareAvailable } from '@/scripts/share-available';
 
 const props = defineProps<{
 	pageName: string;
diff --git a/packages/client/src/scripts/get-note-menu.ts b/packages/client/src/scripts/get-note-menu.ts
index 9c52b2e242..e17ade59c0 100644
--- a/packages/client/src/scripts/get-note-menu.ts
+++ b/packages/client/src/scripts/get-note-menu.ts
@@ -8,6 +8,7 @@ import * as os from '@/os';
 import copyToClipboard from '@/scripts/copy-to-clipboard';
 import { url } from '@/config';
 import { noteActions } from '@/store';
+import { shareAvailable } from '@/scripts/share-available';
 
 export function getNoteMenu(props: {
 	note: misskey.entities.Note;
@@ -220,11 +221,11 @@ export function getNoteMenu(props: {
 					window.open(appearNote.url || appearNote.uri, '_blank');
 				},
 			} : undefined,
-			{
+			shareAvailable() ? {
 				icon: 'ph-share-network-bold ph-lg',
 				text: i18n.ts.share,
 				action: share,
-			},
+			} : undefined,
 			instance.translatorAvailable ? {
 				icon: 'ph-translate-bold ph-lg',
 				text: i18n.ts.translate,
diff --git a/packages/client/src/scripts/share-available.ts b/packages/client/src/scripts/share-available.ts
new file mode 100644
index 0000000000..8056d6dc2e
--- /dev/null
+++ b/packages/client/src/scripts/share-available.ts
@@ -0,0 +1,6 @@
+export function shareAvailable(): boolean {
+	if (navigator.share) {
+		return true;
+	}
+	return false;
+}