diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index fceb46247..2c5fc9c3d 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -1131,6 +1131,7 @@ admin/views/emoji.vue:
     aliases-desc: "スペースで区切って複数設定できます。"
     url: "絵文字画像URL"
     add: "追加"
+    info: "50KB以下のPNG画像をおすすめします。"
   emojis:
     title: "絵文字一覧"
     update: "更新"
diff --git a/src/client/app/admin/views/emoji.vue b/src/client/app/admin/views/emoji.vue
index b889d64bb..7bcd90531 100644
--- a/src/client/app/admin/views/emoji.vue
+++ b/src/client/app/admin/views/emoji.vue
@@ -16,6 +16,7 @@
 			<ui-input v-model="url">
 				<span>%i18n:@add-emoji.url%</span>
 			</ui-input>
+			<ui-info>%i18n:@add-emoji.info%</ui-info>
 			<ui-button @click="add">%i18n:@add-emoji.add%</ui-button>
 		</section>
 	</ui-card>