diff --git a/locales/ja.yml b/locales/ja.yml
index 080556bdc6..57df3e807b 100644
--- a/locales/ja.yml
+++ b/locales/ja.yml
@@ -121,3 +121,81 @@ desktop:
 
     mk-repost-form-window:
       title: "この投稿をRepostしますか？"
+
+mobile:
+  tags:
+    mk-drive-file-viewer:
+      download: "ダウンロード"
+      rename: "名前を変更"
+      move: "移動"
+      fash: "ハッシュ"
+
+    mk-entrance-signin:
+      signup: "新規登録"
+      about: "Misskeyについて"
+
+    mk-entrance-signup:
+      cancel: "キャンセル"
+
+    mk-authorized-apps-page:
+      application: "アプリケーション"
+
+    mk-signin-history-page:
+      signin-history: "ログイン履歴"
+
+    mk-twitter-setting-page:
+      twitter-integration: "Twitter連携"
+
+    mk-drive-page:
+      drive: "ドライブ"
+
+    mk-entrance:
+      ok: "わかった"
+
+    mk-home:
+      home: "ホーム"
+
+    mk-messaging-room-page:
+      message: "メッセージ"
+
+    mk-messaging-page:
+      message: "メッセージ"
+
+    mk-notifications-page:
+      notifications: "通知"
+
+    mk-post-page:
+      submit: "投稿"
+
+    mk-search-page:
+      search: "検索"
+
+    mk-settings-page:
+      profile: "プロフィール"
+      applications: "アプリケーション"
+      twitter-integration: "Twitter連携"
+      signin-history: "ログイン履歴"
+      settings: "設定"
+
+    mk-user-followers-page:
+      followers-of: "{}のフォロワー"
+
+    mk-user-following-page:
+      following-of: "{}のフォロー"
+
+    mk-drive-folder-selector:
+      select-folder: "フォルダーを選択"
+
+    mk-drive-selector:
+      select-file: "ファイルを選択"
+
+    mk-drive:
+      drive: "ドライブ"
+      used: "使用中"
+      folder-count: "フォルダ"
+      count-separator: "、"
+      file-count: "ファイル"
+      load-more: "もっと読み込む"
+      loading: "読み込み中"
+      nothing-in-drive: "ドライブには何もありません"
+      folder-is-empty: "このフォルダは空です"
diff --git a/src/web/app/mobile/tags/drive-folder-selector.tag b/src/web/app/mobile/tags/drive-folder-selector.tag
index d55f645a32..35b3304d4f 100644
--- a/src/web/app/mobile/tags/drive-folder-selector.tag
+++ b/src/web/app/mobile/tags/drive-folder-selector.tag
@@ -1,7 +1,7 @@
 <mk-drive-folder-selector>
 	<div class="body">
 		<header>
-			<h1>フォルダを選択</h1>
+			<h1>%i18n:mobile.tags.mk-drive-folder-selector.select-folder%</h1>
 			<button class="close" onclick={ cancel }><i class="fa fa-times"></i></button>
 			<button class="ok" onclick={ ok }><i class="fa fa-check"></i></button>
 		</header>
diff --git a/src/web/app/mobile/tags/drive-selector.tag b/src/web/app/mobile/tags/drive-selector.tag
index 35cb032586..45e593434f 100644
--- a/src/web/app/mobile/tags/drive-selector.tag
+++ b/src/web/app/mobile/tags/drive-selector.tag
@@ -1,7 +1,7 @@
 <mk-drive-selector>
 	<div class="body">
 		<header>
-			<h1>ファイルを選択<span class="count" if={ files.length > 0 }>({ files.length })</span></h1>
+			<h1>%i18n:mobile.tags.mk-drive-selector.select-file%<span class="count" if={ files.length > 0 }>({ files.length })</span></h1>
 			<button class="close" onclick={ cancel }><i class="fa fa-times"></i></button>
 			<button class="ok" onclick={ ok }><i class="fa fa-check"></i></button>
 		</header>
diff --git a/src/web/app/mobile/tags/drive.tag b/src/web/app/mobile/tags/drive.tag
index 800cb9d7e6..f430b729ce 100644
--- a/src/web/app/mobile/tags/drive.tag
+++ b/src/web/app/mobile/tags/drive.tag
@@ -1,6 +1,6 @@
 <mk-drive>
 	<nav>
-		<p onclick={ goRoot }><i class="fa fa-cloud"></i>ドライブ</p>
+		<p onclick={ goRoot }><i class="fa fa-cloud"></i>%i18n:mobile.tags.mk-drive.drive%</p>
 		<virtual each={ folder in hierarchyFolders }>
 			<span><i class="fa fa-angle-right"></i></span>
 			<p onclick={ move }>{ folder.name }</p>
@@ -17,30 +17,30 @@
 	<mk-uploader ref="uploader"></mk-uploader>
 	<div class="browser { fetching: fetching }" if={ file == null }>
 		<div class="info" if={ info }>
-			<p if={ folder == null }>{ (info.usage / info.capacity * 100).toFixed(1) }%使用中</p>
+			<p if={ folder == null }>{ (info.usage / info.capacity * 100).toFixed(1) }% %i18n:mobile.tags.mk-drive.used%</p>
 			<p if={ folder != null && (folder.folders_count > 0 || folder.files_count > 0) }>
-				<virtual if={ folder.folders_count > 0 }>{ folder.folders_count }フォルダ</virtual>
-				<virtual if={ folder.folders_count > 0 && folder.files_count > 0 }>、</virtual>
-				<virtual if={ folder.files_count > 0 }>{ folder.files_count }ファイル</virtual>
+				<virtual if={ folder.folders_count > 0 }>{ folder.folders_count } %i18:mobile.tags.mk-drive.folder-count%</virtual>
+				<virtual if={ folder.folders_count > 0 && folder.files_count > 0 }>%i18n:mobile.tags.mk-drive.count-separator%</virtual>
+				<virtual if={ folder.files_count > 0 }>{ folder.files_count } %i18n:mobile.tags.mk-drive.file-count%</virtual>
 			</p>
 		</div>
 		<div class="folders" if={ folders.length > 0 }>
 			<virtual each={ folder in folders }>
 				<mk-drive-folder folder={ folder }></mk-drive-folder>
 			</virtual>
-			<p if={ moreFolders }>もっと読み込む</p>
+			<p if={ moreFolders }>%i18n:mobile.tags.mk-drive.load-more%</p>
 		</div>
 		<div class="files" if={ files.length > 0 }>
 			<virtual each={ file in files }>
 				<mk-drive-file file={ file }></mk-drive-file>
 			</virtual>
 			<button class="more" if={ moreFiles } onclick={ fetchMoreFiles }>
-				{ fetchingMoreFiles ? '読み込み中' : 'もっと読み込む' }
+				{ fetchingMoreFiles ? '%i18n:mobile.tags.mk-drive.loading%' : '%i18n:mobile.tags.mk-drive.load-more%' }
 			</button>
 		</div>
 		<div class="empty" if={ files.length == 0 && folders.length == 0 && !fetching }>
-			<p if={ !folder == null }>ドライブには何もありません。</p>
-			<p if={ folder != null }>このフォルダーは空です</p>
+			<p if={ !folder == null }>%i18n:mobile.tags.mk-drive.nothing-in-drive%</p>
+			<p if={ folder != null }>%i18n:mobile.tags.mk-drive.drive-is-empty%</p>
 		</div>
 	</div>
 	<div class="fetching" if={ fetching && file == null && files.length == 0 && folders.length == 0 }>
diff --git a/src/web/app/mobile/tags/drive/file-viewer.tag b/src/web/app/mobile/tags/drive/file-viewer.tag
index 2d5c722552..75bf6e3673 100644
--- a/src/web/app/mobile/tags/drive/file-viewer.tag
+++ b/src/web/app/mobile/tags/drive/file-viewer.tag
@@ -29,20 +29,20 @@
 	<div class="menu">
 		<div>
 			<a href={ file.url + '?download' } download={ file.name }>
-				<i class="fa fa-download"></i>ダウンロード
+				<i class="fa fa-download"></i>%i18n:mobile.tags.mk-drive-file-viewer.download%
 			</a>
 			<button onclick={ rename }>
-				<i class="fa fa-pencil"></i>名前を変更
+				<i class="fa fa-pencil"></i>%i18n:mobile.tags.mk-drive-file-viewer.rename%
 			</button>
 			<button onclick={ move }>
-				<i class="fa fa-folder-open"></i>移動
+				<i class="fa fa-folder-open"></i>%i18n:mobile.tags.mk-drive-file-viewer.move%
 			</button>
 		</div>
 	</div>
 	<div class="hash">
 		<div>
 			<p>
-				<i class="fa fa-hashtag"></i>ファイルのハッシュ値
+				<i class="fa fa-hashtag"></i>%i18n:mobile.tags.mk-drive-file-viewer.hash%
 			</p>
 			<code>{ file.hash }</code>
 		</div>
diff --git a/src/web/app/mobile/tags/page/drive.tag b/src/web/app/mobile/tags/page/drive.tag
index 34b08a718a..c28d767789 100644
--- a/src/web/app/mobile/tags/page/drive.tag
+++ b/src/web/app/mobile/tags/page/drive.tag
@@ -12,7 +12,7 @@
 
 		this.on('mount', () => {
 			document.title = 'Misskey Drive';
-			ui.trigger('title', '<i class="fa fa-cloud"></i>ドライブ');
+			ui.trigger('title', '<i class="fa fa-cloud"></i>%i18n:mobile.tags.mk-drive-page.drive%');
 
 			ui.trigger('func', () => {
 				this.refs.ui.refs.browser.openContextMenu();
@@ -37,7 +37,7 @@
 				history.pushState(null, title, '/i/drive');
 
 				document.title = title;
-				ui.trigger('title', '<i class="fa fa-cloud"></i>ドライブ');
+				ui.trigger('title', '<i class="fa fa-cloud"></i>%i18n:mobile.tags.mk-drive-page.drive%');
 			});
 
 			this.refs.ui.refs.browser.on('open-folder', (folder, silent) => {
diff --git a/src/web/app/mobile/tags/page/entrance.tag b/src/web/app/mobile/tags/page/entrance.tag
index 0ad530eb71..d5f0ea38e7 100644
--- a/src/web/app/mobile/tags/page/entrance.tag
+++ b/src/web/app/mobile/tags/page/entrance.tag
@@ -4,7 +4,7 @@
 		<mk-entrance-signup if={ mode == 'signup' }></mk-entrance-signup>
 		<div class="introduction" if={ mode == 'introduction' }>
 			<mk-introduction></mk-introduction>
-			<button onclick={ signin }>わかった</button>
+			<button onclick={ signin }>%i18n:mobile.tags.mk-entrance.ok%</button>
 		</div>
 	</main>
 	<footer>
diff --git a/src/web/app/mobile/tags/page/entrance/signin.tag b/src/web/app/mobile/tags/page/entrance/signin.tag
index c7bee0716f..f622af54c8 100644
--- a/src/web/app/mobile/tags/page/entrance/signin.tag
+++ b/src/web/app/mobile/tags/page/entrance/signin.tag
@@ -1,7 +1,7 @@
 <mk-entrance-signin>
 	<mk-signin></mk-signin>
 	<div class="divider"><span>or</span></div>
-	<button class="signup" onclick={ parent.signup }>新規登録</button><a class="introduction" onclick={ parent.introduction }>Misskeyについて</a>
+	<button class="signup" onclick={ parent.signup }>%i18n:mobile.tags.mk-entrance.signup%</button><a class="introduction" onclick={ parent.introduction }>%i18n:mobile.tags.mk-entrance-signin.about%</a>
 	<style>
 		:scope
 			display block
@@ -43,9 +43,9 @@
 				font-size 12px
 				color #666
 
-			
 
-			
+
+
 
 	</style>
 </mk-entrance-signin>
diff --git a/src/web/app/mobile/tags/page/entrance/signup.tag b/src/web/app/mobile/tags/page/entrance/signup.tag
index c4b3ee9f38..29eeaef4fb 100644
--- a/src/web/app/mobile/tags/page/entrance/signup.tag
+++ b/src/web/app/mobile/tags/page/entrance/signup.tag
@@ -1,6 +1,6 @@
 <mk-entrance-signup>
 	<mk-signup></mk-signup>
-	<button class="cancel" type="button" onclick={ parent.signin } title="キャンセル"><i class="fa fa-times"></i></button>
+	<button class="cancel" type="button" onclick={ parent.signin } title="%i18n:mobile.tags.mk-entrance-signup.cancel%"><i class="fa fa-times"></i></button>
 	<style>
 		:scope
 			display block
diff --git a/src/web/app/mobile/tags/page/home.tag b/src/web/app/mobile/tags/page/home.tag
index fffb685328..6d8d85521a 100644
--- a/src/web/app/mobile/tags/page/home.tag
+++ b/src/web/app/mobile/tags/page/home.tag
@@ -19,7 +19,7 @@
 
 		this.on('mount', () => {
 			document.title = 'Misskey'
-			ui.trigger('title', '<i class="fa fa-home"></i>ホーム');
+			ui.trigger('title', '<i class="fa fa-home"></i>%i18n:mobile.tags.mk-home.home%');
 
 			ui.trigger('func', () => {
 				openPostForm();
diff --git a/src/web/app/mobile/tags/page/messaging-room.tag b/src/web/app/mobile/tags/page/messaging-room.tag
index fbfa9c51d6..260682ea2f 100644
--- a/src/web/app/mobile/tags/page/messaging-room.tag
+++ b/src/web/app/mobile/tags/page/messaging-room.tag
@@ -22,7 +22,7 @@
 					user: user
 				});
 
-				document.title = `メッセージ: ${user.name} | Misskey`;
+				document.title = `%i18n:mobile.tags.mk-messaging-room-page.message%: ${user.name} | Misskey`;
 				// TODO: ユーザー名をエスケープ
 				ui.trigger('title', '<i class="fa fa-comments-o"></i>' + user.name);
 			});
diff --git a/src/web/app/mobile/tags/page/messaging.tag b/src/web/app/mobile/tags/page/messaging.tag
index 30b2b39891..74568601f2 100644
--- a/src/web/app/mobile/tags/page/messaging.tag
+++ b/src/web/app/mobile/tags/page/messaging.tag
@@ -12,8 +12,8 @@
 		this.mixin('page');
 
 		this.on('mount', () => {
-			document.title = 'Misskey | メッセージ';
-			ui.trigger('title', '<i class="fa fa-comments-o"></i>メッセージ');
+			document.title = 'Misskey | %i18n:mobile.tags.mk-messaging-page.message%';
+			ui.trigger('title', '<i class="fa fa-comments-o"></i>%i18n:mobile.tags.mk-messaging-page.message%');
 
 			this.refs.ui.refs.index.on('navigate-user', user => {
 				this.page('/i/messaging/' + user.username);
diff --git a/src/web/app/mobile/tags/page/notifications.tag b/src/web/app/mobile/tags/page/notifications.tag
index 90baf82e9b..1351bb6432 100644
--- a/src/web/app/mobile/tags/page/notifications.tag
+++ b/src/web/app/mobile/tags/page/notifications.tag
@@ -11,8 +11,8 @@
 		import Progress from '../../../common/scripts/loading';
 
 		this.on('mount', () => {
-			document.title = 'Misskey | 通知';
-			ui.trigger('title', '<i class="fa fa-bell-o"></i>通知');
+			document.title = 'Misskey | %i18n:mobile.tags.mk-notifications-page.notifications%';
+			ui.trigger('title', '<i class="fa fa-bell-o"></i>%i18n:mobile.tags.mk-notifications-page.notifications%');
 
 			Progress.start();
 
diff --git a/src/web/app/mobile/tags/page/post.tag b/src/web/app/mobile/tags/page/post.tag
index dae9bf84be..be9c2ab0b0 100644
--- a/src/web/app/mobile/tags/page/post.tag
+++ b/src/web/app/mobile/tags/page/post.tag
@@ -25,7 +25,7 @@
 
 		this.on('mount', () => {
 			document.title = 'Misskey';
-			ui.trigger('title', '<i class="fa fa-sticky-note-o"></i>投稿');
+			ui.trigger('title', '<i class="fa fa-sticky-note-o"></i>%i18n:mobile.tags.mk-post-page.submit%');
 
 			Progress.start();
 
diff --git a/src/web/app/mobile/tags/page/search.tag b/src/web/app/mobile/tags/page/search.tag
index b5be30ae82..878318fbd6 100644
--- a/src/web/app/mobile/tags/page/search.tag
+++ b/src/web/app/mobile/tags/page/search.tag
@@ -11,7 +11,7 @@
 		import Progress from '../../../common/scripts/loading';
 
 		this.on('mount', () => {
-			document.title = `検索: ${this.opts.query} | Misskey`
+			document.title = `%i18n:mobile.tags.mk-search-page.search%: ${this.opts.query} | Misskey`
 			// TODO: クエリをHTMLエスケープ
 			ui.trigger('title', '<i class="fa fa-search"></i>' + this.opts.query);
 
diff --git a/src/web/app/mobile/tags/page/settings.tag b/src/web/app/mobile/tags/page/settings.tag
index 0185260ca1..58094a876a 100644
--- a/src/web/app/mobile/tags/page/settings.tag
+++ b/src/web/app/mobile/tags/page/settings.tag
@@ -1,10 +1,10 @@
 <mk-settings-page>
 	<mk-ui ref="ui">
 		<ul>
-			<li><a><i class="fa fa-user"></i>プロフィール</a></li>
-			<li><a href="./settings/authorized-apps"><i class="fa fa-puzzle-piece"></i>アプリケーション</a></li>
-			<li><a href="./settings/twitter"><i class="fa fa-twitter"></i>Twitter連携</a></li>
-			<li><a href="./settings/signin-history"><i class="fa fa-sign-in"></i>ログイン履歴</a></li>
+			<li><a><i class="fa fa-user"></i>%i18n:mobile.tags.mk-settings-page.profile%</a></li>
+			<li><a href="./settings/authorized-apps"><i class="fa fa-puzzle-piece"></i>%i18n:mobile.tags.mk-settings-page.applications%</a></li>
+			<li><a href="./settings/twitter"><i class="fa fa-twitter"></i>%i18n:mobile.tags.mk-settings-page.twitter-integration%</a></li>
+			<li><a href="./settings/signin-history"><i class="fa fa-sign-in"></i>%i18n:mobile.tags.mk-settings-page.signin-history%</a></li>
 			<li><a href="./settings/api"><i class="fa fa-key"></i>API</a></li>
 		</ul>
 	</mk-ui>
@@ -16,8 +16,8 @@
 		import ui from '../../scripts/ui-event';
 
 		this.on('mount', () => {
-			document.title = 'Misskey | 設定';
-			ui.trigger('title', '<i class="fa fa-cog"></i>設定');
+			document.title = 'Misskey | %i18n:mobile.tags.mk-settings-page.settings%';
+			ui.trigger('title', '<i class="fa fa-cog"></i>%i18n:mobile.tags.mk-settings-page.settings%');
 		});
 	</script>
 </mk-settings-page>
diff --git a/src/web/app/mobile/tags/page/settings/authorized-apps.tag b/src/web/app/mobile/tags/page/settings/authorized-apps.tag
index 8fc62214ad..697f69de71 100644
--- a/src/web/app/mobile/tags/page/settings/authorized-apps.tag
+++ b/src/web/app/mobile/tags/page/settings/authorized-apps.tag
@@ -10,8 +10,8 @@
 		const ui = require('../../../scripts/ui-event');
 
 		this.on('mount', () => {
-			document.title = 'Misskey | アプリケーション';
-			ui.trigger('title', '<i class="fa fa-puzzle-piece"></i>アプリケーション');
+			document.title = 'Misskey | %i18n:mobile.tags.mk-authorized-apps-page.application%';
+			ui.trigger('title', '<i class="fa fa-puzzle-piece"></i>%i18n:mobile.tags.mk-authorized-apps-page.application%');
 		});
 	</script>
 </mk-authorized-apps-page>
diff --git a/src/web/app/mobile/tags/page/settings/signin.tag b/src/web/app/mobile/tags/page/settings/signin.tag
index 7ada9717c3..f9334f818c 100644
--- a/src/web/app/mobile/tags/page/settings/signin.tag
+++ b/src/web/app/mobile/tags/page/settings/signin.tag
@@ -10,8 +10,8 @@
 		const ui = require('../../../scripts/ui-event');
 
 		this.on('mount', () => {
-			document.title = 'Misskey | ログイン履歴';
-			ui.trigger('title', '<i class="fa fa-sign-in"></i>ログイン履歴');
+			document.title = 'Misskey | %i18n:mobile.tags.mk-signin-history-page.signin-history%';
+			ui.trigger('title', '<i class="fa fa-sign-in"></i>%i18n:mobile.tags.mk-signin-history-page.signin-history%');
 		});
 	</script>
 </mk-signin-history-page>
diff --git a/src/web/app/mobile/tags/page/settings/twitter.tag b/src/web/app/mobile/tags/page/settings/twitter.tag
index 5a3be10f5c..5f3418f798 100644
--- a/src/web/app/mobile/tags/page/settings/twitter.tag
+++ b/src/web/app/mobile/tags/page/settings/twitter.tag
@@ -10,8 +10,8 @@
 		const ui = require('../../../scripts/ui-event');
 
 		this.on('mount', () => {
-			document.title = 'Misskey | Twitter連携';
-			ui.trigger('title', '<i class="fa fa-twitter"></i>Twitter連携');
+			document.title = 'Misskey | %i18n:mobile.tags.mk-twitter-setting-page.twitter-integration%';
+			ui.trigger('title', '<i class="fa fa-twitter"></i>%i18n:mobile.tags.mk-twitter-setting-page.twitter-integration%');
 		});
 	</script>
 </mk-twitter-setting-page>
diff --git a/src/web/app/mobile/tags/page/user-followers.tag b/src/web/app/mobile/tags/page/user-followers.tag
index 5ecf58fd61..b83cf9fd0d 100644
--- a/src/web/app/mobile/tags/page/user-followers.tag
+++ b/src/web/app/mobile/tags/page/user-followers.tag
@@ -26,9 +26,9 @@
 					user: user
 				});
 
-				document.title = user.name + 'のフォロワー | Misskey';
+				document.title = '%i18n:mobile.tags.mk-user-followers-page.followers-of%'.replace('{}', user.name) + ' | Misskey';
 				// TODO: ユーザー名をエスケープ
-				ui.trigger('title', '<img src="' + user.avatar_url + '?thumbnail&size=64">' + user.name + 'のフォロワー');
+				ui.trigger('title', '<img src="' + user.avatar_url + '?thumbnail&size=64">' +  '%i18n:mobile.tags.mk-user-followers-page.followers-of%'.replace('{}', user.name));
 
 				this.refs.ui.refs.list.on('loaded', () => {
 					Progress.done();
diff --git a/src/web/app/mobile/tags/page/user-following.tag b/src/web/app/mobile/tags/page/user-following.tag
index 27d7961da2..482e943173 100644
--- a/src/web/app/mobile/tags/page/user-following.tag
+++ b/src/web/app/mobile/tags/page/user-following.tag
@@ -26,9 +26,9 @@
 					user: user
 				});
 
-				document.title = user.name + 'のフォロー | Misskey';
+				document.title = '%i18n:mobile.tags.mk-user-following-page.following-of%'.replace('{}', user.name) + ' | Misskey';
 				// TODO: ユーザー名をエスケープ
-				ui.trigger('title', '<img src="' + user.avatar_url + '?thumbnail&size=64">' + user.name + 'のフォロー');
+				ui.trigger('title', '<img src="' + user.avatar_url + '?thumbnail&size=64">' + '%i18n:mobile.tags.mk-user-following-page.following-of%'.replace('{}', user.name));
 
 				this.refs.ui.refs.list.on('loaded', () => {
 					Progress.done();