diff --git a/src/web/app/auth/tags/form.tag b/src/web/app/auth/tags/form.tag
index 9ba6e97f8..2007e1e5c 100644
--- a/src/web/app/auth/tags/form.tag
+++ b/src/web/app/auth/tags/form.tag
@@ -1,6 +1,6 @@
 <mk-form>
 	<header>
-		<h1><i>{ app.name }</i>があなたの<b>アカウント</b>に<b>アクセス</b>することを<b>許可</b>しますか？</h1><img src={ app.icon_url + '?thumbnail&amp;size=64' }/>
+		<h1><i>{ app.name }</i>があなたの<b>アカウント</b>に<b>アクセス</b>することを<b>許可</b>しますか？</h1><img src={ app.icon_url + '?thumbnail&size=64' }/>
 	</header>
 	<div class="app">
 		<section>
diff --git a/src/web/app/auth/tags/index.tag b/src/web/app/auth/tags/index.tag
index 89b5e12ed..5f8c5fe72 100644
--- a/src/web/app/auth/tags/index.tag
+++ b/src/web/app/auth/tags/index.tag
@@ -3,7 +3,7 @@
 		<p class="fetching" if={ fetching }>読み込み中
 			<mk-ellipsis></mk-ellipsis>
 		</p>
-		<mk-form ref="form" if={ state == null &amp;&amp; !fetching } session={ session }></mk-form>
+		<mk-form ref="form" if={ state == null && !fetching } session={ session }></mk-form>
 		<div class="denied" if={ state == 'denied' }>
 			<h1>アプリケーションの連携をキャンセルしました。</h1>
 			<p>このアプリがあなたのアカウントにアクセスすることはありません。</p>
diff --git a/src/web/app/common/tags/signup.tag b/src/web/app/common/tags/signup.tag
index 0d245c6c0..508b37c1b 100644
--- a/src/web/app/common/tags/signup.tag
+++ b/src/web/app/common/tags/signup.tag
@@ -3,7 +3,7 @@
 		<label class="username">
 			<p class="caption"><i class="fa fa-at"></i>ユーザー名</p>
 			<input ref="username" type="text" pattern="^[a-zA-Z0-9-]{3,20}$" placeholder="a~z、A~Z、0~9、-" autocomplete="off" required="required" onkeyup={ onChangeUsername }/>
-			<p class="profile-page-url-preview" if={ refs.username.value != '' &amp;&amp; username-state != 'invalidFormat' &amp;&amp; username-state != 'minRange' &amp;&amp; username-state != 'maxRange' }>{ CONFIG.url + '/' + refs.username.value }</p>
+			<p class="profile-page-url-preview" if={ refs.username.value != '' && username-state != 'invalidFormat' && username-state != 'minRange' && username-state != 'maxRange' }>{ CONFIG.url + '/' + refs.username.value }</p>
 			<p class="info" if={ usernameState == 'wait' } style="color:#999"><i class="fa fa-fw fa-spinner fa-pulse"></i>確認しています...</p>
 			<p class="info" if={ usernameState == 'ok' } style="color:#3CB7B5"><i class="fa fa-fw fa-check"></i>利用できます</p>
 			<p class="info" if={ usernameState == 'unavailable' } style="color:#FF1161"><i class="fa fa-fw fa-exclamation-triangle"></i>既に利用されています</p>
diff --git a/src/web/app/common/tags/special-message.tag b/src/web/app/common/tags/special-message.tag
index 8a1337406..7316d91c8 100644
--- a/src/web/app/common/tags/special-message.tag
+++ b/src/web/app/common/tags/special-message.tag
@@ -1,6 +1,6 @@
 <mk-special-message>
-	<p if={ m == 1 &amp;&amp; d == 1 }>Happy New Year! </p>
-	<p if={ m == 12 &amp;&amp; d == 25 }>Merry Christmas!</p>
+	<p if={ m == 1 && d == 1 }>Happy New Year! </p>
+	<p if={ m == 12 && d == 25 }>Merry Christmas!</p>
 	<style type="stylus">
 		:scope
 			display block
diff --git a/src/web/app/common/tags/uploader.tag b/src/web/app/common/tags/uploader.tag
index 7a1797cc1..a3a16624b 100644
--- a/src/web/app/common/tags/uploader.tag
+++ b/src/web/app/common/tags/uploader.tag
@@ -5,9 +5,9 @@
 			<p class="name"><i class="fa fa-spinner fa-pulse"></i>{ name }</p>
 			<p class="status"><span class="initing" if={ progress == undefined }>待機中
 					<mk-ellipsis></mk-ellipsis></span><span class="kb" if={ progress != undefined }>{ String(Math.floor(progress.value / 1024)).replace(/(\d)(?=(\d\d\d)+(?!\d))/g, '$1,') }<i>KB</i> / { String(Math.floor(progress.max / 1024)).replace(/(\d)(?=(\d\d\d)+(?!\d))/g, '$1,') }<i>KB</i></span><span class="percentage" if={ progress != undefined }>{ Math.floor((progress.value / progress.max) * 100) }</span></p>
-			<progress if={ progress != undefined &amp;&amp; progress.value != progress.max } value={ progress.value } max={ progress.max }></progress>
+			<progress if={ progress != undefined && progress.value != progress.max } value={ progress.value } max={ progress.max }></progress>
 			<div class="progress initing" if={ progress == undefined }></div>
-			<div class="progress waiting" if={ progress != undefined &amp;&amp; progress.value == progress.max }></div>
+			<div class="progress waiting" if={ progress != undefined && progress.value == progress.max }></div>
 		</li>
 	</ol>
 	<style type="stylus">
diff --git a/src/web/app/desktop/tags/autocomplete-suggestion.tag b/src/web/app/desktop/tags/autocomplete-suggestion.tag
index c0dbc4f22..1bd1cdc80 100644
--- a/src/web/app/desktop/tags/autocomplete-suggestion.tag
+++ b/src/web/app/desktop/tags/autocomplete-suggestion.tag
@@ -1,6 +1,6 @@
 <mk-autocomplete-suggestion>
 	<ol class="users" ref="users" if={ users.length &gt; 0 }>
-		<li each={ users } onclick={ parent.onClick } onkeydown={ parent.onKeydown } tabindex="-1"><img class="avatar" src={ avatar_url + '?thumbnail&amp;size=32' } alt=""/><span class="name">{ name }</span><span class="username">@{ username }</span></li>
+		<li each={ users } onclick={ parent.onClick } onkeydown={ parent.onKeydown } tabindex="-1"><img class="avatar" src={ avatar_url + '?thumbnail&size=32' } alt=""/><span class="name">{ name }</span><span class="username">@{ username }</span></li>
 	</ol>
 	<style type="stylus">
 		:scope
diff --git a/src/web/app/desktop/tags/big-follow-button.tag b/src/web/app/desktop/tags/big-follow-button.tag
index 733dbee4b..687695fd8 100644
--- a/src/web/app/desktop/tags/big-follow-button.tag
+++ b/src/web/app/desktop/tags/big-follow-button.tag
@@ -1,5 +1,5 @@
 <mk-big-follow-button>
-	<button class={ wait: wait, follow: !user.is_following, unfollow: user.is_following } if={ !init } onclick={ onclick } disabled={ wait } title={ user.is_following ? 'フォロー解除' : 'フォローする' }><span if={ !wait &amp;&amp; user.is_following }><i class="fa fa-minus"></i>フォロー解除</span><span if={ !wait &amp;&amp; !user.is_following }><i class="fa fa-plus"></i>フォロー</span><i class="fa fa-spinner fa-pulse fa-fw" if={ wait }></i></button>
+	<button class={ wait: wait, follow: !user.is_following, unfollow: user.is_following } if={ !init } onclick={ onclick } disabled={ wait } title={ user.is_following ? 'フォロー解除' : 'フォローする' }><span if={ !wait && user.is_following }><i class="fa fa-minus"></i>フォロー解除</span><span if={ !wait && !user.is_following }><i class="fa fa-plus"></i>フォロー</span><i class="fa fa-spinner fa-pulse fa-fw" if={ wait }></i></button>
 	<div class="init" if={ init }><i class="fa fa-spinner fa-pulse fa-fw"></i></div>
 	<style type="stylus">
 		:scope
diff --git a/src/web/app/desktop/tags/crop-window.tag b/src/web/app/desktop/tags/crop-window.tag
index 586fe708c..22d592cf0 100644
--- a/src/web/app/desktop/tags/crop-window.tag
+++ b/src/web/app/desktop/tags/crop-window.tag
@@ -1,7 +1,7 @@
 <mk-crop-window>
 	<mk-window ref="window" is-modal={ true } width={ '800px' }><yield to="header"><i class="fa fa-crop"></i>{ parent.title }</yield>
 <yield to="content">
-		<div class="body"><img ref="img" src={ parent.image.url + '?thumbnail&amp;quality=80' } alt=""/></div>
+		<div class="body"><img ref="img" src={ parent.image.url + '?thumbnail&quality=80' } alt=""/></div>
 		<div class="action">
 			<button class="skip" onclick={ parent.skip }>クロップをスキップ</button>
 			<button class="cancel" onclick={ parent.cancel }>キャンセル</button>
diff --git a/src/web/app/desktop/tags/drive/browser.tag b/src/web/app/desktop/tags/drive/browser.tag
index 3384b694a..1a43e1ccc 100644
--- a/src/web/app/desktop/tags/drive/browser.tag
+++ b/src/web/app/desktop/tags/drive/browser.tag
@@ -23,10 +23,10 @@
 				</virtual>
 				<button if={ moreFiles }>もっと読み込む</button>
 			</div>
-			<div class="empty" if={ files.length == 0 &amp;&amp; folders.length == 0 &amp;&amp; !loading }>
+			<div class="empty" if={ files.length == 0 && folders.length == 0 && !loading }>
 				<p if={ draghover }>ドロップですか？いいですよ、ボクはカワイイですからね</p>
-				<p if={ !draghover &amp;&amp; folder == null }><strong>ドライブには何もありません。</strong><br/>右クリックして「ファイルをアップロード」を選んだり、ファイルをドラッグ&ドロップすることでもアップロードできます。</p>
-				<p if={ !draghover &amp;&amp; folder != null }>このフォルダーは空です</p>
+				<p if={ !draghover && folder == null }><strong>ドライブには何もありません。</strong><br/>右クリックして「ファイルをアップロード」を選んだり、ファイルをドラッグ&ドロップすることでもアップロードできます。</p>
+				<p if={ !draghover && folder != null }>このフォルダーは空です</p>
 			</div>
 		</div>
 		<div class="loading" if={ loading }>
diff --git a/src/web/app/desktop/tags/drive/file.tag b/src/web/app/desktop/tags/drive/file.tag
index 8c267f694..941c64b06 100644
--- a/src/web/app/desktop/tags/drive/file.tag
+++ b/src/web/app/desktop/tags/drive/file.tag
@@ -8,7 +8,7 @@
 	<div class="label" if={ I.data.wallpaper == file.id }><img src="/_/resources/label.svg"/>
 		<p>壁紙</p>
 	</div>
-	<div class="thumbnail"><img src={ file.url + '?thumbnail&amp;size=128' } alt=""/></div>
+	<div class="thumbnail"><img src={ file.url + '?thumbnail&size=128' } alt=""/></div>
 	<p class="name"><span>{ file.name.lastIndexOf('.') != -1 ? file.name.substr(0, file.name.lastIndexOf('.')) : file.name }</span><span class="ext" if={ file.name.lastIndexOf('.') != -1 }>{ file.name.substr(file.name.lastIndexOf('.')) }</span></p>
 	<style type="stylus">
 		:scope
diff --git a/src/web/app/desktop/tags/follow-button.tag b/src/web/app/desktop/tags/follow-button.tag
index 307287b86..df9f271d2 100644
--- a/src/web/app/desktop/tags/follow-button.tag
+++ b/src/web/app/desktop/tags/follow-button.tag
@@ -1,5 +1,5 @@
 <mk-follow-button>
-	<button class={ wait: wait, follow: !user.is_following, unfollow: user.is_following } if={ !init } onclick={ onclick } disabled={ wait } title={ user.is_following ? 'フォロー解除' : 'フォローする' }><i class="fa fa-minus" if={ !wait &amp;&amp; user.is_following }></i><i class="fa fa-plus" if={ !wait &amp;&amp; !user.is_following }></i><i class="fa fa-spinner fa-pulse fa-fw" if={ wait }></i></button>
+	<button class={ wait: wait, follow: !user.is_following, unfollow: user.is_following } if={ !init } onclick={ onclick } disabled={ wait } title={ user.is_following ? 'フォロー解除' : 'フォローする' }><i class="fa fa-minus" if={ !wait && user.is_following }></i><i class="fa fa-plus" if={ !wait && !user.is_following }></i><i class="fa fa-spinner fa-pulse fa-fw" if={ wait }></i></button>
 	<div class="init" if={ init }><i class="fa fa-spinner fa-pulse fa-fw"></i></div>
 	<style type="stylus">
 		:scope
diff --git a/src/web/app/desktop/tags/following-setuper.tag b/src/web/app/desktop/tags/following-setuper.tag
index 784d9db23..81c2da13c 100644
--- a/src/web/app/desktop/tags/following-setuper.tag
+++ b/src/web/app/desktop/tags/following-setuper.tag
@@ -1,14 +1,14 @@
 <mk-following-setuper>
 	<p class="title">気になるユーザーをフォロー:</p>
-	<div class="users" if={ !loading &amp;&amp; users.length &gt; 0 }>
-		<div class="user" each={ users }><a class="avatar-anchor" href={ CONFIG.url + '/' + username }><img class="avatar" src={ avatar_url + '?thumbnail&amp;size=42' } alt="" data-user-preview={ id }/></a>
+	<div class="users" if={ !loading && users.length &gt; 0 }>
+		<div class="user" each={ users }><a class="avatar-anchor" href={ CONFIG.url + '/' + username }><img class="avatar" src={ avatar_url + '?thumbnail&size=42' } alt="" data-user-preview={ id }/></a>
 			<div class="body"><a class="name" href={ CONFIG.url + '/' + username } target="_blank" data-user-preview={ id }>{ name }</a>
 				<p class="username">@{ username }</p>
 			</div>
 			<mk-follow-button user={ this }></mk-follow-button>
 		</div>
 	</div>
-	<p class="empty" if={ !loading &amp;&amp; users.length == 0 }>おすすめのユーザーは見つかりませんでした。</p>
+	<p class="empty" if={ !loading && users.length == 0 }>おすすめのユーザーは見つかりませんでした。</p>
 	<p class="loading" if={ loading }><i class="fa fa-spinner fa-pulse fa-fw"></i>読み込んでいます
 		<mk-ellipsis></mk-ellipsis>
 	</p><a class="refresh" onclick={ refresh }>もっと見る</a>
diff --git a/src/web/app/desktop/tags/home-widgets/photo-stream.tag b/src/web/app/desktop/tags/home-widgets/photo-stream.tag
index f33bbd87d..f975f9b5e 100644
--- a/src/web/app/desktop/tags/home-widgets/photo-stream.tag
+++ b/src/web/app/desktop/tags/home-widgets/photo-stream.tag
@@ -3,12 +3,12 @@
 	<p class="initializing" if={ initializing }><i class="fa fa-spinner fa-pulse fa-fw"></i>読み込んでいます
 		<mk-ellipsis></mk-ellipsis>
 	</p>
-	<div class="stream" if={ !initializing &amp;&amp; images.length &gt; 0 }>
+	<div class="stream" if={ !initializing && images.length &gt; 0 }>
 		<virtual each={ image in images }>
-			<div class="img" style={ 'background-image: url(' + image.url + '?thumbnail&amp;size=256)' }></div>
+			<div class="img" style={ 'background-image: url(' + image.url + '?thumbnail&size=256)' }></div>
 		</virtual>
 	</div>
-	<p class="empty" if={ !initializing &amp;&amp; images.length == 0 }>写真はありません</p>
+	<p class="empty" if={ !initializing && images.length == 0 }>写真はありません</p>
 	<style type="stylus">
 		:scope
 			display block
diff --git a/src/web/app/desktop/tags/home-widgets/profile.tag b/src/web/app/desktop/tags/home-widgets/profile.tag
index c3b09f5f5..ddf1eae52 100644
--- a/src/web/app/desktop/tags/home-widgets/profile.tag
+++ b/src/web/app/desktop/tags/home-widgets/profile.tag
@@ -1,5 +1,5 @@
 <mk-profile-home-widget>
-	<div class="banner" style={ I.banner_url ? 'background-image: url(' + I.banner_url + '?thumbnail&amp;size=256)' : '' } onclick={ setBanner }></div><img class="avatar" src={ I.avatar_url + '?thumbnail&amp;size=64' } onclick={ setAvatar } alt="avatar" data-user-preview={ I.id }/><a class="name" href={ CONFIG.url + '/' + I.username }>{ I.name }</a>
+	<div class="banner" style={ I.banner_url ? 'background-image: url(' + I.banner_url + '?thumbnail&size=256)' : '' } onclick={ setBanner }></div><img class="avatar" src={ I.avatar_url + '?thumbnail&size=64' } onclick={ setAvatar } alt="avatar" data-user-preview={ I.id }/><a class="name" href={ CONFIG.url + '/' + I.username }>{ I.name }</a>
 	<p class="username">@{ I.username }</p>
 	<style type="stylus">
 		:scope
diff --git a/src/web/app/desktop/tags/home-widgets/user-recommendation.tag b/src/web/app/desktop/tags/home-widgets/user-recommendation.tag
index cf55aef65..b0c686688 100644
--- a/src/web/app/desktop/tags/home-widgets/user-recommendation.tag
+++ b/src/web/app/desktop/tags/home-widgets/user-recommendation.tag
@@ -1,13 +1,13 @@
 <mk-user-recommendation-home-widget>
 	<p class="title"><i class="fa fa-users"></i>おすすめユーザー</p>
 	<button onclick={ refresh } title="他を見る"><i class="fa fa-refresh"></i></button>
-	<div class="user" if={ !loading &amp;&amp; users.length != 0 } each={ _user in users }><a class="avatar-anchor" href={ CONFIG.url + '/' + _user.username }><img class="avatar" src={ _user.avatar_url + '?thumbnail&amp;size=42' } alt="" data-user-preview={ _user.id }/></a>
+	<div class="user" if={ !loading && users.length != 0 } each={ _user in users }><a class="avatar-anchor" href={ CONFIG.url + '/' + _user.username }><img class="avatar" src={ _user.avatar_url + '?thumbnail&size=42' } alt="" data-user-preview={ _user.id }/></a>
 		<div class="body"><a class="name" href={ CONFIG.url + '/' + _user.username } data-user-preview={ _user.id }>{ _user.name }</a>
 			<p class="username">@{ _user.username }</p>
 		</div>
 		<mk-follow-button user={ _user }></mk-follow-button>
 	</div>
-	<p class="empty" if={ !loading &amp;&amp; users.length == 0 }>いません！</p>
+	<p class="empty" if={ !loading && users.length == 0 }>いません！</p>
 	<p class="loading" if={ loading }><i class="fa fa-spinner fa-pulse fa-fw"></i>読み込んでいます
 		<mk-ellipsis></mk-ellipsis>
 	</p>
diff --git a/src/web/app/desktop/tags/images-viewer.tag b/src/web/app/desktop/tags/images-viewer.tag
index 7951c400e..b91486a91 100644
--- a/src/web/app/desktop/tags/images-viewer.tag
+++ b/src/web/app/desktop/tags/images-viewer.tag
@@ -1,5 +1,5 @@
 <mk-images-viewer>
-	<div class="image" ref="view" onmousemove={ mousemove } style={ 'background-image: url(' + image.url + '?thumbnail' } onclick={ click }><img src={ image.url + '?thumbnail&amp;size=512' } alt={ image.name } title={ image.name }/></div>
+	<div class="image" ref="view" onmousemove={ mousemove } style={ 'background-image: url(' + image.url + '?thumbnail' } onclick={ click }><img src={ image.url + '?thumbnail&size=512' } alt={ image.name } title={ image.name }/></div>
 	<style type="stylus">
 		:scope
 			display block
diff --git a/src/web/app/desktop/tags/input-dialog.tag b/src/web/app/desktop/tags/input-dialog.tag
index 7c9170e19..86f161981 100644
--- a/src/web/app/desktop/tags/input-dialog.tag
+++ b/src/web/app/desktop/tags/input-dialog.tag
@@ -6,7 +6,7 @@
 		</div>
 		<div class="action">
 			<button class="cancel" onclick={ parent.cancel }>キャンセル</button>
-			<button class="ok" disabled={ !parent.allowEmpty &amp;&amp; refs.text.value.length == 0 } onclick={ parent.ok }>決定</button>
+			<button class="ok" disabled={ !parent.allowEmpty && refs.text.value.length == 0 } onclick={ parent.ok }>決定</button>
 		</div></yield>
 	</mk-window>
 	<style type="stylus">
diff --git a/src/web/app/desktop/tags/list-user.tag b/src/web/app/desktop/tags/list-user.tag
index 6647ffd4a..8746223fc 100644
--- a/src/web/app/desktop/tags/list-user.tag
+++ b/src/web/app/desktop/tags/list-user.tag
@@ -1,4 +1,4 @@
-<mk-list-user><a class="avatar-anchor" href={ CONFIG.url + '/' + user.username }><img class="avatar" src={ user.avatar_url + '?thumbnail&amp;size=64' } alt="avatar"/></a>
+<mk-list-user><a class="avatar-anchor" href={ CONFIG.url + '/' + user.username }><img class="avatar" src={ user.avatar_url + '?thumbnail&size=64' } alt="avatar"/></a>
 	<div class="main">
 		<header>
 			<div class="left"><a class="name" href={ CONFIG.url + '/' + user.username }>{ user.name }</a><span class="username">@{ user.username }</span></div>
diff --git a/src/web/app/desktop/tags/messaging/index.tag b/src/web/app/desktop/tags/messaging/index.tag
index d77ada3b4..1c74469ea 100644
--- a/src/web/app/desktop/tags/messaging/index.tag
+++ b/src/web/app/desktop/tags/messaging/index.tag
@@ -6,14 +6,14 @@
 		</div>
 		<div class="result">
 			<ol class="users" if={ searchResult.length &gt; 0 }>
-				<li each={ user in searchResult }><a onclick={ user._click }><img class="avatar" src={ user.avatar_url + '?thumbnail&amp;size=32' } alt=""/><span class="name">{ user.name }</span><span class="username">@{ user.username }</span></a></li>
+				<li each={ user in searchResult }><a onclick={ user._click }><img class="avatar" src={ user.avatar_url + '?thumbnail&size=32' } alt=""/><span class="name">{ user.name }</span><span class="username">@{ user.username }</span></a></li>
 			</ol>
 		</div>
 	</div>
 	<div class="main">
 		<div class="history" if={ history.length &gt; 0 }>
 			<virtual each={ history }><a class="user" data-is-me={ is_me } data-is-read={ is_read } onclick={ _click }>
-					<div><img class="avatar" src={ (is_me ? recipient.avatar_url : user.avatar_url) + '?thumbnail&amp;size=64' } alt=""/>
+					<div><img class="avatar" src={ (is_me ? recipient.avatar_url : user.avatar_url) + '?thumbnail&size=64' } alt=""/>
 						<header><span class="name">{ is_me ? recipient.name : user.name }</span><span class="username">{ '@' + (is_me ? recipient.username : user.username ) }</span>
 							<mk-time time={ created_at }></mk-time>
 						</header>
diff --git a/src/web/app/desktop/tags/messaging/message.tag b/src/web/app/desktop/tags/messaging/message.tag
index a366ee5d6..6c0c6952f 100644
--- a/src/web/app/desktop/tags/messaging/message.tag
+++ b/src/web/app/desktop/tags/messaging/message.tag
@@ -1,7 +1,7 @@
-<mk-messaging-message data-is-me={ message.is_me }><a class="avatar-anchor" href={ CONFIG.url + '/' + message.user.username } title={ message.user.username } target="_blank"><img class="avatar" src={ message.user.avatar_url + '?thumbnail&amp;size=64' } alt=""/></a>
+<mk-messaging-message data-is-me={ message.is_me }><a class="avatar-anchor" href={ CONFIG.url + '/' + message.user.username } title={ message.user.username } target="_blank"><img class="avatar" src={ message.user.avatar_url + '?thumbnail&size=64' } alt=""/></a>
 	<div class="content-container">
 		<div class="balloon">
-			<p class="read" if={ message.is_me &amp;&amp; message.is_read }>既読</p>
+			<p class="read" if={ message.is_me && message.is_read }>既読</p>
 			<button class="delete-button" if={ message.is_me } title="メッセージを削除"><img src="/_/resources/desktop/messaging/delete.png" alt="Delete"/></button>
 			<div class="content" if={ !message.is_deleted }>
 				<div ref="text"></div>
diff --git a/src/web/app/desktop/tags/messaging/room.tag b/src/web/app/desktop/tags/messaging/room.tag
index 6f1ef3cc6..2e0c19156 100644
--- a/src/web/app/desktop/tags/messaging/room.tag
+++ b/src/web/app/desktop/tags/messaging/room.tag
@@ -1,10 +1,10 @@
 <mk-messaging-room>
 	<div class="stream" ref="stream">
 		<p class="initializing" if={ init }><i class="fa fa-spinner fa-spin"></i>読み込み中</p>
-		<p class="empty" if={ !init &amp;&amp; messages.length == 0 }><i class="fa fa-info-circle"></i>このユーザーとまだ会話したことがありません</p>
+		<p class="empty" if={ !init && messages.length == 0 }><i class="fa fa-info-circle"></i>このユーザーとまだ会話したことがありません</p>
 		<virtual each={ message, i in messages }>
 			<mk-messaging-message message={ message }></mk-messaging-message>
-			<p class="date" if={ i != messages.length - 1 &amp;&amp; message._date != messages[i + 1]._date }><span>{ messages[i + 1]._datetext }</span></p>
+			<p class="date" if={ i != messages.length - 1 && message._date != messages[i + 1]._date }><span>{ messages[i + 1]._datetext }</span></p>
 		</virtual>
 	</div>
 	<div class="typings"></div>
diff --git a/src/web/app/desktop/tags/notifications.tag b/src/web/app/desktop/tags/notifications.tag
index bd6e87430..b4920ffc2 100644
--- a/src/web/app/desktop/tags/notifications.tag
+++ b/src/web/app/desktop/tags/notifications.tag
@@ -3,41 +3,41 @@
 		<virtual each={ notification, i in notifications }>
 			<div class="notification { notification.type }">
 				<mk-time time={ notification.created_at }></mk-time>
-				<div class="main" if={ notification.type == 'like' }><a class="avatar-anchor" href={ CONFIG.url + '/' + notification.user.username } data-user-preview={ notification.user.id }><img class="avatar" src={ notification.user.avatar_url + '?thumbnail&amp;size=48' } alt="avatar"/></a>
+				<div class="main" if={ notification.type == 'like' }><a class="avatar-anchor" href={ CONFIG.url + '/' + notification.user.username } data-user-preview={ notification.user.id }><img class="avatar" src={ notification.user.avatar_url + '?thumbnail&size=48' } alt="avatar"/></a>
 					<div class="text">
 						<p><i class="fa fa-thumbs-o-up"></i><a href={ CONFIG.url + '/' + notification.user.username } data-user-preview={ notification.user.id }>{ notification.user.name }</a></p><a class="post-ref" href={ CONFIG.url + '/' + notification.post.user.username + '/' + notification.post.id }>{ getPostSummary(notification.post) }</a>
 					</div>
 				</div>
-				<div class="main" if={ notification.type == 'repost' }><a class="avatar-anchor" href={ CONFIG.url + '/' + notification.post.user.username } data-user-preview={ notification.post.user_id }><img class="avatar" src={ notification.post.user.avatar_url + '?thumbnail&amp;size=48' } alt="avatar"/></a>
+				<div class="main" if={ notification.type == 'repost' }><a class="avatar-anchor" href={ CONFIG.url + '/' + notification.post.user.username } data-user-preview={ notification.post.user_id }><img class="avatar" src={ notification.post.user.avatar_url + '?thumbnail&size=48' } alt="avatar"/></a>
 					<div class="text">
 						<p><i class="fa fa-retweet"></i><a href={ CONFIG.url + '/' + notification.post.user.username } data-user-preview={ notification.post.user_id }>{ notification.post.user.name }</a></p><a class="post-ref" href={ CONFIG.url + '/' + notification.post.user.username + '/' + notification.post.id }>{ getPostSummary(notification.post.repost) }</a>
 					</div>
 				</div>
-				<div class="main" if={ notification.type == 'quote' }><a class="avatar-anchor" href={ CONFIG.url + '/' + notification.post.user.username } data-user-preview={ notification.post.user_id }><img class="avatar" src={ notification.post.user.avatar_url + '?thumbnail&amp;size=48' } alt="avatar"/></a>
+				<div class="main" if={ notification.type == 'quote' }><a class="avatar-anchor" href={ CONFIG.url + '/' + notification.post.user.username } data-user-preview={ notification.post.user_id }><img class="avatar" src={ notification.post.user.avatar_url + '?thumbnail&size=48' } alt="avatar"/></a>
 					<div class="text">
 						<p><i class="fa fa-quote-left"></i><a href={ CONFIG.url + '/' + notification.post.user.username } data-user-preview={ notification.post.user_id }>{ notification.post.user.name }</a></p><a class="post-preview" href={ CONFIG.url + '/' + notification.post.user.username + '/' + notification.post.id }>{ getPostSummary(notification.post) }</a>
 					</div>
 				</div>
-				<div class="main" if={ notification.type == 'follow' }><a class="avatar-anchor" href={ CONFIG.url + '/' + notification.user.username } data-user-preview={ notification.user.id }><img class="avatar" src={ notification.user.avatar_url + '?thumbnail&amp;size=48' } alt="avatar"/></a>
+				<div class="main" if={ notification.type == 'follow' }><a class="avatar-anchor" href={ CONFIG.url + '/' + notification.user.username } data-user-preview={ notification.user.id }><img class="avatar" src={ notification.user.avatar_url + '?thumbnail&size=48' } alt="avatar"/></a>
 					<div class="text">
 						<p><i class="fa fa-user-plus"></i><a href={ CONFIG.url + '/' + notification.user.username } data-user-preview={ notification.user.id }>{ notification.user.name }</a></p>
 					</div>
 				</div>
-				<div class="main" if={ notification.type == 'reply' }><a class="avatar-anchor" href={ CONFIG.url + '/' + notification.post.user.username } data-user-preview={ notification.post.user_id }><img class="avatar" src={ notification.post.user.avatar_url + '?thumbnail&amp;size=48' } alt="avatar"/></a>
+				<div class="main" if={ notification.type == 'reply' }><a class="avatar-anchor" href={ CONFIG.url + '/' + notification.post.user.username } data-user-preview={ notification.post.user_id }><img class="avatar" src={ notification.post.user.avatar_url + '?thumbnail&size=48' } alt="avatar"/></a>
 					<div class="text">
 						<p><i class="fa fa-reply"></i><a href={ CONFIG.url + '/' + notification.post.user.username } data-user-preview={ notification.post.user_id }>{ notification.post.user.name }</a></p><a class="post-preview" href={ CONFIG.url + '/' + notification.post.user.username + '/' + notification.post.id }>{ getPostSummary(notification.post) }</a>
 					</div>
 				</div>
-				<div class="main" if={ notification.type == 'mention' }><a class="avatar-anchor" href={ CONFIG.url + '/' + notification.post.user.username } data-user-preview={ notification.post.user_id }><img class="avatar" src={ notification.post.user.avatar_url + '?thumbnail&amp;size=48' } alt="avatar"/></a>
+				<div class="main" if={ notification.type == 'mention' }><a class="avatar-anchor" href={ CONFIG.url + '/' + notification.post.user.username } data-user-preview={ notification.post.user_id }><img class="avatar" src={ notification.post.user.avatar_url + '?thumbnail&size=48' } alt="avatar"/></a>
 					<div class="text">
 						<p><i class="fa fa-at"></i><a href={ CONFIG.url + '/' + notification.post.user.username } data-user-preview={ notification.post.user_id }>{ notification.post.user.name }</a></p><a class="post-preview" href={ CONFIG.url + '/' + notification.post.user.username + '/' + notification.post.id }>{ getPostSummary(notification.post) }</a>
 					</div>
 				</div>
 			</div>
-			<p class="date" if={ i != notifications.length - 1 &amp;&amp; notification._date != notifications[i + 1]._date }><span><i class="fa fa-angle-up"></i>{ notification._datetext }</span><span><i class="fa fa-angle-down"></i>{ notifications[i + 1]._datetext }</span></p>
+			<p class="date" if={ i != notifications.length - 1 && notification._date != notifications[i + 1]._date }><span><i class="fa fa-angle-up"></i>{ notification._datetext }</span><span><i class="fa fa-angle-down"></i>{ notifications[i + 1]._datetext }</span></p>
 		</virtual>
 	</div>
-	<p class="empty" if={ notifications.length == 0 &amp;&amp; !loading }>ありません！</p>
+	<p class="empty" if={ notifications.length == 0 && !loading }>ありません！</p>
 	<p class="loading" if={ loading }><i class="fa fa-spinner fa-pulse fa-fw"></i>読み込んでいます
 		<mk-ellipsis></mk-ellipsis>
 	</p>
diff --git a/src/web/app/desktop/tags/pages/entrance/signin.tag b/src/web/app/desktop/tags/pages/entrance/signin.tag
index c911a4d1d..45b580800 100644
--- a/src/web/app/desktop/tags/pages/entrance/signin.tag
+++ b/src/web/app/desktop/tags/pages/entrance/signin.tag
@@ -1,6 +1,6 @@
 <mk-entrance-signin><a class="help" href={ CONFIG.urls.about + '/help' } title="お困りですか？"><i class="fa fa-question"></i></a>
 	<div class="form">
-		<h1><img if={ user } src={ user.avatar_url + '?thumbnail&amp;size=32' }/>
+		<h1><img if={ user } src={ user.avatar_url + '?thumbnail&size=32' }/>
 			<p>{ user ? user.name : 'アカウント' }</p>
 		</h1>
 		<mk-signin ref="signin"></mk-signin>
diff --git a/src/web/app/desktop/tags/post-detail-sub.tag b/src/web/app/desktop/tags/post-detail-sub.tag
index ff5094aa2..cc2e0aed3 100644
--- a/src/web/app/desktop/tags/post-detail-sub.tag
+++ b/src/web/app/desktop/tags/post-detail-sub.tag
@@ -1,4 +1,4 @@
-<mk-post-detail-sub title={ title }><a class="avatar-anchor" href={ CONFIG.url + '/' + post.user.username }><img class="avatar" src={ post.user.avatar_url + '?thumbnail&amp;size=64' } alt="avatar" data-user-preview={ post.user_id }/></a>
+<mk-post-detail-sub title={ title }><a class="avatar-anchor" href={ CONFIG.url + '/' + post.user.username }><img class="avatar" src={ post.user.avatar_url + '?thumbnail&size=64' } alt="avatar" data-user-preview={ post.user_id }/></a>
 	<div class="main">
 		<header>
 			<div class="left"><a class="name" href={ CONFIG.url + '/' + post.user.username } data-user-preview={ post.user_id }>{ post.user.name }</a><span class="username">@{ post.user.username }</span></div>
@@ -8,7 +8,7 @@
 		<div class="body">
 			<div class="text" ref="text"></div>
 			<div class="media" if={ post.media }>
-				<virtual each={ file in post.media }><img src={ file.url + '?thumbnail&amp;size=512' } alt={ file.name } title={ file.name }/></virtual>
+				<virtual each={ file in post.media }><img src={ file.url + '?thumbnail&size=512' } alt={ file.name } title={ file.name }/></virtual>
 			</div>
 		</div>
 	</div>
diff --git a/src/web/app/desktop/tags/post-detail.tag b/src/web/app/desktop/tags/post-detail.tag
index cb3d276cf..d6f93ca21 100644
--- a/src/web/app/desktop/tags/post-detail.tag
+++ b/src/web/app/desktop/tags/post-detail.tag
@@ -3,7 +3,7 @@
 		<mk-ellipsis-icon></mk-ellipsis-icon>
 	</div>
 	<div class="main" if={ !fetching }>
-		<button class="read-more" if={ p.reply_to &amp;&amp; p.reply_to.reply_to_id &amp;&amp; context == null } title="会話をもっと読み込む" onclick={ loadContext } disabled={ loadingContext }><i class="fa fa-ellipsis-v" if={ !loadingContext }></i><i class="fa fa-spinner fa-pulse" if={ loadingContext }></i></button>
+		<button class="read-more" if={ p.reply_to && p.reply_to.reply_to_id && context == null } title="会話をもっと読み込む" onclick={ loadContext } disabled={ loadingContext }><i class="fa fa-ellipsis-v" if={ !loadingContext }></i><i class="fa fa-spinner fa-pulse" if={ loadingContext }></i></button>
 		<div class="context">
 			<virtual each={ post in context }>
 				<mk-post-detail-sub post={ post }></mk-post-detail-sub>
@@ -13,15 +13,15 @@
 			<mk-post-detail-sub post={ p.reply_to }></mk-post-detail-sub>
 		</div>
 		<div class="repost" if={ isRepost }>
-			<p><a class="avatar-anchor" href={ CONFIG.url + '/' + post.user.username } data-user-preview={ post.user_id }><img class="avatar" src={ post.user.avatar_url + '?thumbnail&amp;size=32' } alt="avatar"/></a><i class="fa fa-retweet"></i><a class="name" href={ CONFIG.url + '/' + post.user.username }>{ post.user.name }</a>がRepost</p>
+			<p><a class="avatar-anchor" href={ CONFIG.url + '/' + post.user.username } data-user-preview={ post.user_id }><img class="avatar" src={ post.user.avatar_url + '?thumbnail&size=32' } alt="avatar"/></a><i class="fa fa-retweet"></i><a class="name" href={ CONFIG.url + '/' + post.user.username }>{ post.user.name }</a>がRepost</p>
 		</div>
-		<article><a class="avatar-anchor" href={ CONFIG.url + '/' + p.user.username }><img class="avatar" src={ p.user.avatar_url + '?thumbnail&amp;size=64' } alt="avatar" data-user-preview={ p.user.id }/></a>
+		<article><a class="avatar-anchor" href={ CONFIG.url + '/' + p.user.username }><img class="avatar" src={ p.user.avatar_url + '?thumbnail&size=64' } alt="avatar" data-user-preview={ p.user.id }/></a>
 			<header><a class="name" href={ CONFIG.url + '/' + p.user.username } data-user-preview={ p.user.id }>{ p.user.name }</a><span class="username">@{ p.user.username }</span><a class="time" href={ url }>
 					<mk-time time={ p.created_at }></mk-time></a></header>
 			<div class="body">
 				<div class="text" ref="text"></div>
 				<div class="media" if={ p.media }>
-					<virtual each={ file in p.media }><img src={ file.url + '?thumbnail&amp;size=512' } alt={ file.name } title={ file.name }/></virtual>
+					<virtual each={ file in p.media }><img src={ file.url + '?thumbnail&size=512' } alt={ file.name } title={ file.name }/></virtual>
 				</div>
 			</div>
 			<footer>
@@ -37,20 +37,20 @@
 				<button onclick={ NotImplementedException }><i class="fa fa-ellipsis-h"></i></button>
 			</footer>
 			<div class="reposts-and-likes">
-				<div class="reposts" if={ reposts &amp;&amp; reposts.length &gt; 0 }>
+				<div class="reposts" if={ reposts && reposts.length &gt; 0 }>
 					<header><a>{ p.repost_count }</a>
 						<p>Repost</p>
 					</header>
 					<ol class="users">
-						<li class="user" each={ reposts }><a class="avatar-anchor" href={ CONFIG.url + '/' + user.username } title={ user.name } data-user-preview={ user.id }><img class="avatar" src={ user.avatar_url + '?thumbnail&amp;size=32' } alt=""/></a></li>
+						<li class="user" each={ reposts }><a class="avatar-anchor" href={ CONFIG.url + '/' + user.username } title={ user.name } data-user-preview={ user.id }><img class="avatar" src={ user.avatar_url + '?thumbnail&size=32' } alt=""/></a></li>
 					</ol>
 				</div>
-				<div class="likes" if={ likes &amp;&amp; likes.length &gt; 0 }>
+				<div class="likes" if={ likes && likes.length &gt; 0 }>
 					<header><a>{ p.likes_count }</a>
 						<p>いいね</p>
 					</header>
 					<ol class="users">
-						<li class="user" each={ likes }><a class="avatar-anchor" href={ CONFIG.url + '/' + username } title={ name } data-user-preview={ id }><img class="avatar" src={ avatar_url + '?thumbnail&amp;size=32' } alt=""/></a></li>
+						<li class="user" each={ likes }><a class="avatar-anchor" href={ CONFIG.url + '/' + username } title={ name } data-user-preview={ id }><img class="avatar" src={ avatar_url + '?thumbnail&size=32' } alt=""/></a></li>
 					</ol>
 				</div>
 			</div>
diff --git a/src/web/app/desktop/tags/post-form.tag b/src/web/app/desktop/tags/post-form.tag
index 082a211a6..968385947 100644
--- a/src/web/app/desktop/tags/post-form.tag
+++ b/src/web/app/desktop/tags/post-form.tag
@@ -3,7 +3,7 @@
 	<div class="attaches" if={ files.length != 0 }>
 		<ul class="files" ref="attaches">
 			<li class="file" each={ files }>
-				<div class="img" style="background-image: url({ url + &quot;?thumbnail&amp;size=64&quot; })" title={ name }></div><img class="remove" onclick={ _remove } src="/_/resources/desktop/remove.png" title="添付取り消し" alt=""/>
+				<div class="img" style="background-image: url({ url + &quot;?thumbnail&size=64&quot; })" title={ name }></div><img class="remove" onclick={ _remove } src="/_/resources/desktop/remove.png" title="添付取り消し" alt=""/>
 			</li>
 			<li class="add" if={ files.length &lt; 4 } title="PCからファイルを添付" onclick={ selectFile }><i class="fa fa-plus"></i></li>
 		</ul>
@@ -13,7 +13,7 @@
 	<button ref="upload" title="PCからファイルを添付" onclick={ selectFile }><i class="fa fa-upload"></i></button>
 	<button ref="drive" title="ドライブからファイルを添付" onclick={ selectFileFromDrive }><i class="fa fa-cloud"></i></button>
 	<p class="text-count { over: refs.text.value.length &gt; 300 }">のこり{ 300 - refs.text.value.length }文字</p>
-	<button class={ wait: wait } ref="submit" disabled={ wait || (refs.text.value.length == 0 &amp;&amp; files.length == 0) } onclick={ post }>{ wait ? '投稿中' : opts.reply ? '返信' : '投稿' }
+	<button class={ wait: wait } ref="submit" disabled={ wait || (refs.text.value.length == 0 && files.length == 0) } onclick={ post }>{ wait ? '投稿中' : opts.reply ? '返信' : '投稿' }
 		<mk-ellipsis if={ wait }></mk-ellipsis>
 	</button>
 	<input ref="file" type="file" accept="image/*" multiple="multiple" tabindex="-1" onchange={ changeFile }/>
diff --git a/src/web/app/desktop/tags/post-preview.tag b/src/web/app/desktop/tags/post-preview.tag
index 06a7b2418..b088ceaac 100644
--- a/src/web/app/desktop/tags/post-preview.tag
+++ b/src/web/app/desktop/tags/post-preview.tag
@@ -1,5 +1,5 @@
 <mk-post-preview title={ title }>
-	<article><a class="avatar-anchor" href={ CONFIG.url + '/' + post.user.username }><img class="avatar" src={ post.user.avatar_url + '?thumbnail&amp;size=64' } alt="avatar" data-user-preview={ post.user_id }/></a>
+	<article><a class="avatar-anchor" href={ CONFIG.url + '/' + post.user.username }><img class="avatar" src={ post.user.avatar_url + '?thumbnail&size=64' } alt="avatar" data-user-preview={ post.user_id }/></a>
 		<div class="main">
 			<header><a class="name" href={ CONFIG.url + '/' + post.user.username } data-user-preview={ post.user_id }>{ post.user.name }</a><span class="username">@{ post.user.username }</span><a class="time" href={ CONFIG.url + '/' + post.user.username + '/' + post.id }>
 					<mk-time time={ post.created_at }></mk-time></a></header>
diff --git a/src/web/app/desktop/tags/progress-dialog.tag b/src/web/app/desktop/tags/progress-dialog.tag
index ca2cc8cca..cb4e44dc4 100644
--- a/src/web/app/desktop/tags/progress-dialog.tag
+++ b/src/web/app/desktop/tags/progress-dialog.tag
@@ -8,7 +8,7 @@
 				<mk-ellipsis></mk-ellipsis>
 			</p>
 			<p class="percentage" if={ !isNaN(parent.value) }>{ Math.floor((parent.value / parent.max) * 100) }</p>
-			<progress if={ !isNaN(parent.value) &amp;&amp; parent.value &lt; parent.max } value={ isNaN(parent.value) ? 0 : parent.value } max={ parent.max }></progress>
+			<progress if={ !isNaN(parent.value) && parent.value &lt; parent.max } value={ isNaN(parent.value) ? 0 : parent.value } max={ parent.max }></progress>
 			<div class="progress waiting" if={ parent.value &gt;= parent.max }></div>
 		</div></yield>
 	</mk-window>
diff --git a/src/web/app/desktop/tags/select-file-from-drive-window.tag b/src/web/app/desktop/tags/select-file-from-drive-window.tag
index 5dd601ea2..b19e875f6 100644
--- a/src/web/app/desktop/tags/select-file-from-drive-window.tag
+++ b/src/web/app/desktop/tags/select-file-from-drive-window.tag
@@ -1,12 +1,12 @@
 <mk-select-file-from-drive-window>
 	<mk-window ref="window" is-modal={ true } width={ '800px' } height={ '500px' }><yield to="header">
-		<mk-raw content={ parent.title }></mk-raw><span class="count" if={ parent.multiple &amp;&amp; parent.file.length &gt; 0 }>({ parent.file.length }ファイル選択中)</span></yield>
+		<mk-raw content={ parent.title }></mk-raw><span class="count" if={ parent.multiple && parent.file.length &gt; 0 }>({ parent.file.length }ファイル選択中)</span></yield>
 <yield to="content">
 		<mk-drive-browser ref="browser" multiple={ parent.multiple }></mk-drive-browser>
 		<div>
 			<button class="upload" title="PCからドライブにファイルをアップロード" onclick={ parent.upload }><i class="fa fa-upload"></i></button>
 			<button class="cancel" onclick={ parent.close }>キャンセル</button>
-			<button class="ok" disabled={ parent.multiple &amp;&amp; parent.file.length == 0 } onclick={ parent.ok }>決定</button>
+			<button class="ok" disabled={ parent.multiple && parent.file.length == 0 } onclick={ parent.ok }>決定</button>
 		</div></yield>
 	</mk-window>
 	<style type="stylus">
diff --git a/src/web/app/desktop/tags/settings.tag b/src/web/app/desktop/tags/settings.tag
index 26ba0e148..f012ddfd7 100644
--- a/src/web/app/desktop/tags/settings.tag
+++ b/src/web/app/desktop/tags/settings.tag
@@ -13,7 +13,7 @@
 		<section class="account" show={ page == 'account' }>
 			<h1>アカウント</h1>
 			<label class="avatar">
-				<p>アバター</p><img class="avatar" src={ I.avatar_url + '?thumbnail&amp;size=64' } alt="avatar"/>
+				<p>アバター</p><img class="avatar" src={ I.avatar_url + '?thumbnail&size=64' } alt="avatar"/>
 				<button class="style-normal" onclick={ avatar }>画像を選択</button>
 			</label>
 			<label>
diff --git a/src/web/app/desktop/tags/timeline-post-sub.tag b/src/web/app/desktop/tags/timeline-post-sub.tag
index a4fd0b749..2b1262639 100644
--- a/src/web/app/desktop/tags/timeline-post-sub.tag
+++ b/src/web/app/desktop/tags/timeline-post-sub.tag
@@ -1,5 +1,5 @@
 <mk-timeline-post-sub title={ title }>
-	<article><a class="avatar-anchor" href={ CONFIG.url + '/' + post.user.username }><img class="avatar" src={ post.user.avatar_url + '?thumbnail&amp;size=64' } alt="avatar" data-user-preview={ post.user_id }/></a>
+	<article><a class="avatar-anchor" href={ CONFIG.url + '/' + post.user.username }><img class="avatar" src={ post.user.avatar_url + '?thumbnail&size=64' } alt="avatar" data-user-preview={ post.user_id }/></a>
 		<div class="main">
 			<header><a class="name" href={ CONFIG.url + '/' + post.user.username } data-user-preview={ post.user_id }>{ post.user.name }</a><span class="username">@{ post.user.username }</span><a class="created-at" href={ CONFIG.url + '/' + post.user.username + '/' + post.id }>
 					<mk-time time={ post.created_at }></mk-time></a></header>
diff --git a/src/web/app/desktop/tags/timeline-post.tag b/src/web/app/desktop/tags/timeline-post.tag
index b20154a90..a87f5b88d 100644
--- a/src/web/app/desktop/tags/timeline-post.tag
+++ b/src/web/app/desktop/tags/timeline-post.tag
@@ -3,10 +3,10 @@
 		<mk-timeline-post-sub post={ p.reply_to }></mk-timeline-post-sub>
 	</div>
 	<div class="repost" if={ isRepost }>
-		<p><a class="avatar-anchor" href={ CONFIG.url + '/' + post.user.username } data-user-preview={ post.user_id }><img class="avatar" src={ post.user.avatar_url + '?thumbnail&amp;size=32' } alt="avatar"/></a><i class="fa fa-retweet"></i><a class="name" href={ CONFIG.url + '/' + post.user.username } data-user-preview={ post.user_id }>{ post.user.name }</a>がRepost</p>
+		<p><a class="avatar-anchor" href={ CONFIG.url + '/' + post.user.username } data-user-preview={ post.user_id }><img class="avatar" src={ post.user.avatar_url + '?thumbnail&size=32' } alt="avatar"/></a><i class="fa fa-retweet"></i><a class="name" href={ CONFIG.url + '/' + post.user.username } data-user-preview={ post.user_id }>{ post.user.name }</a>がRepost</p>
 		<mk-time time={ post.created_at }></mk-time>
 	</div>
-	<article><a class="avatar-anchor" href={ CONFIG.url + '/' + p.user.username }><img class="avatar" src={ p.user.avatar_url + '?thumbnail&amp;size=64' } alt="avatar" data-user-preview={ p.user.id }/></a>
+	<article><a class="avatar-anchor" href={ CONFIG.url + '/' + p.user.username }><img class="avatar" src={ p.user.avatar_url + '?thumbnail&size=64' } alt="avatar" data-user-preview={ p.user.id }/></a>
 		<div class="main">
 			<header><a class="name" href={ CONFIG.url + '/' + p.user.username } data-user-preview={ p.user.id }>{ p.user.name }</a><span class="username">@{ p.user.username }</span><a class="created-at" href={ url }>
 					<mk-time time={ p.created_at }></mk-time></a></header>
diff --git a/src/web/app/desktop/tags/timeline.tag b/src/web/app/desktop/tags/timeline.tag
index da9f8c32c..40ba9ea24 100644
--- a/src/web/app/desktop/tags/timeline.tag
+++ b/src/web/app/desktop/tags/timeline.tag
@@ -1,7 +1,7 @@
 <mk-timeline>
 	<virtual each={ post, i in posts }>
 		<mk-timeline-post post={ post }></mk-timeline-post>
-		<p class="date" if={ i != posts.length - 1 &amp;&amp; post._date != posts[i + 1]._date }><span><i class="fa fa-angle-up"></i>{ post._datetext }</span><span><i class="fa fa-angle-down"></i>{ posts[i + 1]._datetext }</span></p>
+		<p class="date" if={ i != posts.length - 1 && post._date != posts[i + 1]._date }><span><i class="fa fa-angle-up"></i>{ post._datetext }</span><span><i class="fa fa-angle-down"></i>{ posts[i + 1]._datetext }</span></p>
 	</virtual>
 	<footer data-yield="footer"><yield from="footer"/></footer>
 	<style type="stylus">
diff --git a/src/web/app/desktop/tags/ui-header-account.tag b/src/web/app/desktop/tags/ui-header-account.tag
index 193b8cb2e..b9ea41224 100644
--- a/src/web/app/desktop/tags/ui-header-account.tag
+++ b/src/web/app/desktop/tags/ui-header-account.tag
@@ -1,5 +1,5 @@
 <mk-ui-header-account>
-	<button class="header" data-active={ isOpen.toString() } onclick={ toggle }><span class="username">{ I.username }<i class="fa fa-angle-down" if={ !isOpen }></i><i class="fa fa-angle-up" if={ isOpen }></i></span><img class="avatar" src={ I.avatar_url + '?thumbnail&amp;size=64' } alt="avatar"/></button>
+	<button class="header" data-active={ isOpen.toString() } onclick={ toggle }><span class="username">{ I.username }<i class="fa fa-angle-down" if={ !isOpen }></i><i class="fa fa-angle-up" if={ isOpen }></i></span><img class="avatar" src={ I.avatar_url + '?thumbnail&size=64' } alt="avatar"/></button>
 	<div class="menu" if={ isOpen }>
 		<ul>
 			<li><a href={ '/' + I.username }><i class="fa fa-user"></i>プロフィール<i class="fa fa-angle-right"></i></a></li>
diff --git a/src/web/app/desktop/tags/ui-header.tag b/src/web/app/desktop/tags/ui-header.tag
index 686e40a0e..9b34f6caf 100644
--- a/src/web/app/desktop/tags/ui-header.tag
+++ b/src/web/app/desktop/tags/ui-header.tag
@@ -1,5 +1,5 @@
 <mk-ui-header>
-	<mk-donation if={ SIGNIN &amp;&amp; !I.data.no_donation }></mk-donation>
+	<mk-donation if={ SIGNIN && !I.data.no_donation }></mk-donation>
 	<mk-special-message></mk-special-message>
 	<div class="main">
 		<div class="backdrop"></div>
diff --git a/src/web/app/desktop/tags/ui.tag b/src/web/app/desktop/tags/ui.tag
index 42a8274e5..14416209b 100644
--- a/src/web/app/desktop/tags/ui.tag
+++ b/src/web/app/desktop/tags/ui.tag
@@ -1,8 +1,8 @@
 <mk-ui>
 	<div class="global" ref="global">
 		<mk-ui-header ref="header" page={ opts.page }></mk-ui-header>
-		<mk-set-avatar-suggestion if={ SIGNIN &amp;&amp; I.avatar_id == null }></mk-set-avatar-suggestion>
-		<mk-set-banner-suggestion if={ SIGNIN &amp;&amp; I.banner_id == null }></mk-set-banner-suggestion>
+		<mk-set-avatar-suggestion if={ SIGNIN && I.avatar_id == null }></mk-set-avatar-suggestion>
+		<mk-set-banner-suggestion if={ SIGNIN && I.banner_id == null }></mk-set-banner-suggestion>
 		<div class="content"><yield /></div>
 	</div>
 	<mk-stream-indicator></mk-stream-indicator>
diff --git a/src/web/app/desktop/tags/user-followers-window.tag b/src/web/app/desktop/tags/user-followers-window.tag
index 960bb3ae0..80e71f359 100644
--- a/src/web/app/desktop/tags/user-followers-window.tag
+++ b/src/web/app/desktop/tags/user-followers-window.tag
@@ -1,5 +1,5 @@
 <mk-user-followers-window>
-	<mk-window is-modal={ false } width={ '400px' } height={ '550px' }><yield to="header"><img src={ parent.user.avatar_url + '?thumbnail&amp;size=64' } alt=""/>{ parent.user.name }のフォロワー</yield>
+	<mk-window is-modal={ false } width={ '400px' } height={ '550px' }><yield to="header"><img src={ parent.user.avatar_url + '?thumbnail&size=64' } alt=""/>{ parent.user.name }のフォロワー</yield>
 <yield to="content">
 		<mk-user-followers user={ parent.user }></mk-user-followers></yield>
 	</mk-window>
diff --git a/src/web/app/desktop/tags/user-following-window.tag b/src/web/app/desktop/tags/user-following-window.tag
index 09db2eef7..52ba76c3d 100644
--- a/src/web/app/desktop/tags/user-following-window.tag
+++ b/src/web/app/desktop/tags/user-following-window.tag
@@ -1,5 +1,5 @@
 <mk-user-following-window>
-	<mk-window is-modal={ false } width={ '400px' } height={ '550px' }><yield to="header"><img src={ parent.user.avatar_url + '?thumbnail&amp;size=64' } alt=""/>{ parent.user.name }のフォロー</yield>
+	<mk-window is-modal={ false } width={ '400px' } height={ '550px' }><yield to="header"><img src={ parent.user.avatar_url + '?thumbnail&size=64' } alt=""/>{ parent.user.name }のフォロー</yield>
 <yield to="content">
 		<mk-user-following user={ parent.user }></mk-user-following></yield>
 	</mk-window>
diff --git a/src/web/app/desktop/tags/user-header.tag b/src/web/app/desktop/tags/user-header.tag
index 4f00ec56d..d9a5beff2 100644
--- a/src/web/app/desktop/tags/user-header.tag
+++ b/src/web/app/desktop/tags/user-header.tag
@@ -1,5 +1,5 @@
 <mk-user-header data-is-dark-background={ user.banner_url != null }>
-	<div class="banner" ref="banner" style={ user.banner_url ? 'background-image: url(' + user.banner_url + '?thumbnail&amp;size=1024)' : '' } onclick={ onUpdateBanner }></div><img class="avatar" src={ user.avatar_url + '?thumbnail&amp;size=150' } alt="avatar"/>
+	<div class="banner" ref="banner" style={ user.banner_url ? 'background-image: url(' + user.banner_url + '?thumbnail&size=1024)' : '' } onclick={ onUpdateBanner }></div><img class="avatar" src={ user.avatar_url + '?thumbnail&size=150' } alt="avatar"/>
 	<div class="title">
 		<p class="name" href={ CONFIG.url + '/' + user.username }>{ user.name }</p>
 		<p class="username">@{ user.username }</p>
diff --git a/src/web/app/desktop/tags/user-photos.tag b/src/web/app/desktop/tags/user-photos.tag
index 06e730c5e..8886462ab 100644
--- a/src/web/app/desktop/tags/user-photos.tag
+++ b/src/web/app/desktop/tags/user-photos.tag
@@ -3,12 +3,12 @@
 	<p class="initializing" if={ initializing }><i class="fa fa-spinner fa-pulse fa-fw"></i>読み込んでいます
 		<mk-ellipsis></mk-ellipsis>
 	</p>
-	<div class="stream" if={ !initializing &amp;&amp; images.length &gt; 0 }>
+	<div class="stream" if={ !initializing && images.length &gt; 0 }>
 		<virtual each={ image in images }>
-			<div class="img" style={ 'background-image: url(' + image.url + '?thumbnail&amp;size=256)' }></div>
+			<div class="img" style={ 'background-image: url(' + image.url + '?thumbnail&size=256)' }></div>
 		</virtual>
 	</div>
-	<p class="empty" if={ !initializing &amp;&amp; images.length == 0 }>写真はありません</p>
+	<p class="empty" if={ !initializing && images.length == 0 }>写真はありません</p>
 	<style type="stylus">
 		:scope
 			display block
diff --git a/src/web/app/desktop/tags/user-preview.tag b/src/web/app/desktop/tags/user-preview.tag
index 9b52d24d3..a746dc1cf 100644
--- a/src/web/app/desktop/tags/user-preview.tag
+++ b/src/web/app/desktop/tags/user-preview.tag
@@ -1,6 +1,6 @@
 <mk-user-preview>
 	<virtual if={ user != null }>
-		<div class="banner" style={ user.banner_url ? 'background-image: url(' + user.banner_url + '?thumbnail&amp;size=512)' : '' }></div><a class="avatar" href={ CONFIG.url + '/' + user.username } target="_blank"><img src={ user.avatar_url + '?thumbnail&amp;size=64' } alt="avatar"/></a>
+		<div class="banner" style={ user.banner_url ? 'background-image: url(' + user.banner_url + '?thumbnail&size=512)' : '' }></div><a class="avatar" href={ CONFIG.url + '/' + user.username } target="_blank"><img src={ user.avatar_url + '?thumbnail&size=64' } alt="avatar"/></a>
 		<div class="title">
 			<p class="name">{ user.name }</p>
 			<p class="username">@{ user.username }</p>
@@ -17,7 +17,7 @@
 				<p>フォロワー</p><a>{ user.followers_count }</a>
 			</div>
 		</div>
-		<mk-follow-button if={ SIGNIN &amp;&amp; user.id != I.id } user={ userPromise }></mk-follow-button>
+		<mk-follow-button if={ SIGNIN && user.id != I.id } user={ userPromise }></mk-follow-button>
 	</virtual>
 	<style type="stylus">
 		:scope
diff --git a/src/web/app/desktop/tags/user-profile.tag b/src/web/app/desktop/tags/user-profile.tag
index 54abfd3b1..5653a8f0b 100644
--- a/src/web/app/desktop/tags/user-profile.tag
+++ b/src/web/app/desktop/tags/user-profile.tag
@@ -1,5 +1,5 @@
 <mk-user-profile>
-	<div class="friend-form" if={ SIGNIN &amp;&amp; I.id != user.id }>
+	<div class="friend-form" if={ SIGNIN && I.id != user.id }>
 		<mk-big-follow-button user={ user }></mk-big-follow-button>
 		<p class="followed" if={ user.is_followed }>フォローされています</p>
 	</div>
diff --git a/src/web/app/desktop/tags/users-list.tag b/src/web/app/desktop/tags/users-list.tag
index abf1db87c..f07f6cb6c 100644
--- a/src/web/app/desktop/tags/users-list.tag
+++ b/src/web/app/desktop/tags/users-list.tag
@@ -1,17 +1,17 @@
 <mk-users-list>
 	<nav>
 		<div><span data-is-active={ mode == 'all' } onclick={ setMode.bind(this, 'all') }>すべて<span>{ opts.count }</span></span>
-			<!-- ↓ https://github.com/riot/riot/issues/2080--><span if={ SIGNIN &amp;&amp; opts.youKnowCount != '' } data-is-active={ mode == 'iknow' } onclick={ setMode.bind(this, 'iknow') }>知り合い<span>{ opts.youKnowCount }</span></span>
+			<!-- ↓ https://github.com/riot/riot/issues/2080--><span if={ SIGNIN && opts.youKnowCount != '' } data-is-active={ mode == 'iknow' } onclick={ setMode.bind(this, 'iknow') }>知り合い<span>{ opts.youKnowCount }</span></span>
 		</div>
 	</nav>
-	<div class="users" if={ !fetching &amp;&amp; users.length != 0 }>
+	<div class="users" if={ !fetching && users.length != 0 }>
 		<div each={ users }>
 			<mk-list-user user={ this }></mk-list-user>
 		</div>
 	</div>
-	<button class="more" if={ !fetching &amp;&amp; next != null } onclick={ more } disabled={ moreFetching }><span if={ !moreFetching }>もっと</span><span if={ moreFetching }>読み込み中
+	<button class="more" if={ !fetching && next != null } onclick={ more } disabled={ moreFetching }><span if={ !moreFetching }>もっと</span><span if={ moreFetching }>読み込み中
 			<mk-ellipsis></mk-ellipsis></span></button>
-	<p class="no" if={ !fetching &amp;&amp; users.length == 0 }>{ opts.noUsers }</p>
+	<p class="no" if={ !fetching && users.length == 0 }>{ opts.noUsers }</p>
 	<p class="fetching" if={ fetching }><i class="fa fa-spinner fa-pulse fa-fw"></i>読み込んでいます
 		<mk-ellipsis></mk-ellipsis>
 	</p>
diff --git a/src/web/app/mobile/tags/drive.tag b/src/web/app/mobile/tags/drive.tag
index 5e9c45b2b..835a5f7f5 100644
--- a/src/web/app/mobile/tags/drive.tag
+++ b/src/web/app/mobile/tags/drive.tag
@@ -19,7 +19,7 @@
 			</virtual>
 			<p if={ moreFiles }>もっと読み込む</p>
 		</div>
-		<div class="empty" if={ files.length == 0 &amp;&amp; folders.length == 0 &amp;&amp; !loading }>
+		<div class="empty" if={ files.length == 0 && folders.length == 0 && !loading }>
 			<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>
 		</div>
diff --git a/src/web/app/mobile/tags/drive/file.tag b/src/web/app/mobile/tags/drive/file.tag
index 81007e107..6746347a4 100644
--- a/src/web/app/mobile/tags/drive/file.tag
+++ b/src/web/app/mobile/tags/drive/file.tag
@@ -1,6 +1,6 @@
 <mk-drive-file onclick={ onclick } data-is-selected={ isSelected }>
 	<div class="container">
-		<div class="thumbnail" style={ 'background-image: url(' + file.url + '?thumbnail&amp;size=128)' }></div>
+		<div class="thumbnail" style={ 'background-image: url(' + file.url + '?thumbnail&size=128)' }></div>
 		<div class="body">
 			<p class="name">{ file.name }</p>
 			<!--
diff --git a/src/web/app/mobile/tags/follow-button.tag b/src/web/app/mobile/tags/follow-button.tag
index eae935950..c7535dd40 100644
--- a/src/web/app/mobile/tags/follow-button.tag
+++ b/src/web/app/mobile/tags/follow-button.tag
@@ -1,5 +1,5 @@
 <mk-follow-button>
-	<button class={ wait: wait, follow: !user.is_following, unfollow: user.is_following } if={ !init } onclick={ onclick } disabled={ wait }><i class="fa fa-minus" if={ !wait &amp;&amp; user.is_following }></i><i class="fa fa-plus" if={ !wait &amp;&amp; !user.is_following }></i><i class="fa fa-spinner fa-pulse fa-fw" if={ wait }></i>{ user.is_following ? 'フォロー解除' : 'フォロー' }</button>
+	<button class={ wait: wait, follow: !user.is_following, unfollow: user.is_following } if={ !init } onclick={ onclick } disabled={ wait }><i class="fa fa-minus" if={ !wait && user.is_following }></i><i class="fa fa-plus" if={ !wait && !user.is_following }></i><i class="fa fa-spinner fa-pulse fa-fw" if={ wait }></i>{ user.is_following ? 'フォロー解除' : 'フォロー' }</button>
 	<div class="init" if={ init }><i class="fa fa-spinner fa-pulse fa-fw"></i></div>
 	<style type="stylus">
 		:scope
diff --git a/src/web/app/mobile/tags/images-viewer.tag b/src/web/app/mobile/tags/images-viewer.tag
index 9b7ce478a..98ec368f2 100644
--- a/src/web/app/mobile/tags/images-viewer.tag
+++ b/src/web/app/mobile/tags/images-viewer.tag
@@ -1,5 +1,5 @@
 <mk-images-viewer>
-	<div class="image" ref="view" onclick={ click }><img ref="img" src={ image.url + '?thumbnail&amp;size=512' } alt={ image.name } title={ image.name }/></div>
+	<div class="image" ref="view" onclick={ click }><img ref="img" src={ image.url + '?thumbnail&size=512' } alt={ image.name } title={ image.name }/></div>
 	<style type="stylus">
 		:scope
 			display block
diff --git a/src/web/app/mobile/tags/notification-preview.tag b/src/web/app/mobile/tags/notification-preview.tag
index 702a00ba6..bcc2f2ea6 100644
--- a/src/web/app/mobile/tags/notification-preview.tag
+++ b/src/web/app/mobile/tags/notification-preview.tag
@@ -1,34 +1,34 @@
 <mk-notification-preview class={ notification.type }>
-	<div class="main" if={ notification.type == 'like' }><img class="avatar" src={ notification.user.avatar_url + '?thumbnail&amp;size=64' } alt="avatar"/>
+	<div class="main" if={ notification.type == 'like' }><img class="avatar" src={ notification.user.avatar_url + '?thumbnail&size=64' } alt="avatar"/>
 		<div class="text">
 			<p><i class="fa fa-thumbs-o-up"></i>{ notification.user.name }</p>
 			<p class="post-ref">{ getPostSummary(notification.post) }</p>
 		</div>
 	</div>
-	<div class="main" if={ notification.type == 'repost' }><img class="avatar" src={ notification.post.user.avatar_url + '?thumbnail&amp;size=64' } alt="avatar"/>
+	<div class="main" if={ notification.type == 'repost' }><img class="avatar" src={ notification.post.user.avatar_url + '?thumbnail&size=64' } alt="avatar"/>
 		<div class="text">
 			<p><i class="fa fa-retweet"></i>{ notification.post.user.name }</p>
 			<p class="post-ref">{ getPostSummary(notification.post.repost) }</p>
 		</div>
 	</div>
-	<div class="main" if={ notification.type == 'quote' }><img class="avatar" src={ notification.post.user.avatar_url + '?thumbnail&amp;size=64' } alt="avatar"/>
+	<div class="main" if={ notification.type == 'quote' }><img class="avatar" src={ notification.post.user.avatar_url + '?thumbnail&size=64' } alt="avatar"/>
 		<div class="text">
 			<p><i class="fa fa-quote-left"></i>{ notification.post.user.name }</p>
 			<p class="post-preview">{ getPostSummary(notification.post) }</p>
 		</div>
 	</div>
-	<div class="main" if={ notification.type == 'follow' }><img class="avatar" src={ notification.user.avatar_url + '?thumbnail&amp;size=64' } alt="avatar"/>
+	<div class="main" if={ notification.type == 'follow' }><img class="avatar" src={ notification.user.avatar_url + '?thumbnail&size=64' } alt="avatar"/>
 		<div class="text">
 			<p><i class="fa fa-user-plus"></i>{ notification.user.name }</p>
 		</div>
 	</div>
-	<div class="main" if={ notification.type == 'reply' }><img class="avatar" src={ notification.post.user.avatar_url + '?thumbnail&amp;size=64' } alt="avatar"/>
+	<div class="main" if={ notification.type == 'reply' }><img class="avatar" src={ notification.post.user.avatar_url + '?thumbnail&size=64' } alt="avatar"/>
 		<div class="text">
 			<p><i class="fa fa-reply"></i>{ notification.post.user.name }</p>
 			<p class="post-preview">{ getPostSummary(notification.post) }</p>
 		</div>
 	</div>
-	<div class="main" if={ notification.type == 'mention' }><img class="avatar" src={ notification.post.user.avatar_url + '?thumbnail&amp;size=64' } alt="avatar"/>
+	<div class="main" if={ notification.type == 'mention' }><img class="avatar" src={ notification.post.user.avatar_url + '?thumbnail&size=64' } alt="avatar"/>
 		<div class="text">
 			<p><i class="fa fa-at"></i>{ notification.post.user.name }</p>
 			<p class="post-preview">{ getPostSummary(notification.post) }</p>
diff --git a/src/web/app/mobile/tags/notification.tag b/src/web/app/mobile/tags/notification.tag
index 5220198a7..7a0909b00 100644
--- a/src/web/app/mobile/tags/notification.tag
+++ b/src/web/app/mobile/tags/notification.tag
@@ -1,31 +1,31 @@
 <mk-notification class={ notification.type }>
 	<mk-time time={ notification.created_at }></mk-time>
-	<div class="main" if={ notification.type == 'like' }><a class="avatar-anchor" href={ CONFIG.url + '/' + notification.user.username }><img class="avatar" src={ notification.user.avatar_url + '?thumbnail&amp;size=64' } alt="avatar"/></a>
+	<div class="main" if={ notification.type == 'like' }><a class="avatar-anchor" href={ CONFIG.url + '/' + notification.user.username }><img class="avatar" src={ notification.user.avatar_url + '?thumbnail&size=64' } alt="avatar"/></a>
 		<div class="text">
 			<p><i class="fa fa-thumbs-o-up"></i><a href={ CONFIG.url + '/' + notification.user.username }>{ notification.user.name }</a></p><a class="post-ref" href={ CONFIG.url + '/' + notification.post.user.username + '/' + notification.post.id }>{ getPostSummary(notification.post) }</a>
 		</div>
 	</div>
-	<div class="main" if={ notification.type == 'repost' }><a class="avatar-anchor" href={ CONFIG.url + '/' + notification.post.user.username }><img class="avatar" src={ notification.post.user.avatar_url + '?thumbnail&amp;size=64' } alt="avatar"/></a>
+	<div class="main" if={ notification.type == 'repost' }><a class="avatar-anchor" href={ CONFIG.url + '/' + notification.post.user.username }><img class="avatar" src={ notification.post.user.avatar_url + '?thumbnail&size=64' } alt="avatar"/></a>
 		<div class="text">
 			<p><i class="fa fa-retweet"></i><a href={ CONFIG.url + '/' + notification.post.user.username }>{ notification.post.user.name }</a></p><a class="post-ref" href={ CONFIG.url + '/' + notification.post.user.username + '/' + notification.post.id }>{ getPostSummary(notification.post.repost) }</a>
 		</div>
 	</div>
-	<div class="main" if={ notification.type == 'quote' }><a class="avatar-anchor" href={ CONFIG.url + '/' + notification.post.user.username }><img class="avatar" src={ notification.post.user.avatar_url + '?thumbnail&amp;size=64' } alt="avatar"/></a>
+	<div class="main" if={ notification.type == 'quote' }><a class="avatar-anchor" href={ CONFIG.url + '/' + notification.post.user.username }><img class="avatar" src={ notification.post.user.avatar_url + '?thumbnail&size=64' } alt="avatar"/></a>
 		<div class="text">
 			<p><i class="fa fa-quote-left"></i><a href={ CONFIG.url + '/' + notification.post.user.username }>{ notification.post.user.name }</a></p><a class="post-preview" href={ CONFIG.url + '/' + notification.post.user.username + '/' + notification.post.id }>{ getPostSummary(notification.post) }</a>
 		</div>
 	</div>
-	<div class="main" if={ notification.type == 'follow' }><a class="avatar-anchor" href={ CONFIG.url + '/' + notification.user.username }><img class="avatar" src={ notification.user.avatar_url + '?thumbnail&amp;size=64' } alt="avatar"/></a>
+	<div class="main" if={ notification.type == 'follow' }><a class="avatar-anchor" href={ CONFIG.url + '/' + notification.user.username }><img class="avatar" src={ notification.user.avatar_url + '?thumbnail&size=64' } alt="avatar"/></a>
 		<div class="text">
 			<p><i class="fa fa-user-plus"></i><a href={ CONFIG.url + '/' + notification.user.username }>{ notification.user.name }</a></p>
 		</div>
 	</div>
-	<div class="main" if={ notification.type == 'reply' }><a class="avatar-anchor" href={ CONFIG.url + '/' + notification.post.user.username }><img class="avatar" src={ notification.post.user.avatar_url + '?thumbnail&amp;size=64' } alt="avatar"/></a>
+	<div class="main" if={ notification.type == 'reply' }><a class="avatar-anchor" href={ CONFIG.url + '/' + notification.post.user.username }><img class="avatar" src={ notification.post.user.avatar_url + '?thumbnail&size=64' } alt="avatar"/></a>
 		<div class="text">
 			<p><i class="fa fa-reply"></i><a href={ CONFIG.url + '/' + notification.post.user.username }>{ notification.post.user.name }</a></p><a class="post-preview" href={ CONFIG.url + '/' + notification.post.user.username + '/' + notification.post.id }>{ getPostSummary(notification.post) }</a>
 		</div>
 	</div>
-	<div class="main" if={ notification.type == 'mention' }><a class="avatar-anchor" href={ CONFIG.url + '/' + notification.post.user.username }><img class="avatar" src={ notification.post.user.avatar_url + '?thumbnail&amp;size=64' } alt="avatar"/></a>
+	<div class="main" if={ notification.type == 'mention' }><a class="avatar-anchor" href={ CONFIG.url + '/' + notification.post.user.username }><img class="avatar" src={ notification.post.user.avatar_url + '?thumbnail&size=64' } alt="avatar"/></a>
 		<div class="text">
 			<p><i class="fa fa-at"></i><a href={ CONFIG.url + '/' + notification.post.user.username }>{ notification.post.user.name }</a></p><a class="post-preview" href={ CONFIG.url + '/' + notification.post.user.username + '/' + notification.post.id }>{ getPostSummary(notification.post) }</a>
 		</div>
diff --git a/src/web/app/mobile/tags/notifications.tag b/src/web/app/mobile/tags/notifications.tag
index a88c4a100..5461c15f3 100644
--- a/src/web/app/mobile/tags/notifications.tag
+++ b/src/web/app/mobile/tags/notifications.tag
@@ -2,10 +2,10 @@
 	<div class="notifications" if={ notifications.length != 0 }>
 		<virtual each={ notification, i in notifications }>
 			<mk-notification notification={ notification }></mk-notification>
-			<p class="date" if={ i != notifications.length - 1 &amp;&amp; notification._date != notifications[i + 1]._date }><span><i class="fa fa-angle-up"></i>{ notification._datetext }</span><span><i class="fa fa-angle-down"></i>{ notifications[i + 1]._datetext }</span></p>
+			<p class="date" if={ i != notifications.length - 1 && notification._date != notifications[i + 1]._date }><span><i class="fa fa-angle-up"></i>{ notification._datetext }</span><span><i class="fa fa-angle-down"></i>{ notifications[i + 1]._datetext }</span></p>
 		</virtual>
 	</div>
-	<p class="empty" if={ notifications.length == 0 &amp;&amp; !loading }>ありません！</p>
+	<p class="empty" if={ notifications.length == 0 && !loading }>ありません！</p>
 	<p class="loading" if={ loading }><i class="fa fa-spinner fa-pulse fa-fw"></i>読み込んでいます
 		<mk-ellipsis></mk-ellipsis>
 	</p>
diff --git a/src/web/app/mobile/tags/post-detail.tag b/src/web/app/mobile/tags/post-detail.tag
index c649ebe5f..1df502d10 100644
--- a/src/web/app/mobile/tags/post-detail.tag
+++ b/src/web/app/mobile/tags/post-detail.tag
@@ -3,7 +3,7 @@
 		<mk-ellipsis-icon></mk-ellipsis-icon>
 	</div>
 	<div class="main" if={ !fetching }>
-		<button class="read-more" if={ p.reply_to &amp;&amp; p.reply_to.reply_to_id &amp;&amp; context == null } onclick={ loadContext } disabled={ loadingContext }><i class="fa fa-ellipsis-v" if={ !loadingContext }></i><i class="fa fa-spinner fa-pulse" if={ loadingContext }></i></button>
+		<button class="read-more" if={ p.reply_to && p.reply_to.reply_to_id && context == null } onclick={ loadContext } disabled={ loadingContext }><i class="fa fa-ellipsis-v" if={ !loadingContext }></i><i class="fa fa-spinner fa-pulse" if={ loadingContext }></i></button>
 		<div class="context">
 			<virtual each={ post in context }>
 				<mk-post-preview post={ post }></mk-post-preview>
@@ -13,14 +13,14 @@
 			<mk-post-preview post={ p.reply_to }></mk-post-preview>
 		</div>
 		<div class="repost" if={ isRepost }>
-			<p><a class="avatar-anchor" href={ CONFIG.url + '/' + post.user.username }><img class="avatar" src={ post.user.avatar_url + '?thumbnail&amp;size=32' } alt="avatar"/></a><i class="fa fa-retweet"></i><a class="name" href={ CONFIG.url + '/' + post.user.username }>{ post.user.name }</a>がRepost</p>
+			<p><a class="avatar-anchor" href={ CONFIG.url + '/' + post.user.username }><img class="avatar" src={ post.user.avatar_url + '?thumbnail&size=32' } alt="avatar"/></a><i class="fa fa-retweet"></i><a class="name" href={ CONFIG.url + '/' + post.user.username }>{ post.user.name }</a>がRepost</p>
 		</div>
-		<article><a class="avatar-anchor" href={ CONFIG.url + '/' + p.user.username }><img class="avatar" src={ p.user.avatar_url + '?thumbnail&amp;size=64' } alt="avatar"/></a>
+		<article><a class="avatar-anchor" href={ CONFIG.url + '/' + p.user.username }><img class="avatar" src={ p.user.avatar_url + '?thumbnail&size=64' } alt="avatar"/></a>
 			<header><a class="name" href={ CONFIG.url + '/' + p.user.username }>{ p.user.name }</a><span class="username">@{ p.user.username }</span></header>
 			<div class="body">
 				<div class="text" ref="text"></div>
 				<div class="media" if={ p.media }>
-					<virtual each={ file in p.media }><img src={ file.url + '?thumbnail&amp;size=512' } alt={ file.name } title={ file.name }/></virtual>
+					<virtual each={ file in p.media }><img src={ file.url + '?thumbnail&size=512' } alt={ file.name } title={ file.name }/></virtual>
 				</div>
 			</div><a class="time" href={ url }>
 				<mk-time time={ p.created_at } mode="detail"></mk-time></a>
@@ -37,20 +37,20 @@
 				<button onclick={ NotImplementedException }><i class="fa fa-ellipsis-h"></i></button>
 			</footer>
 			<div class="reposts-and-likes">
-				<div class="reposts" if={ reposts &amp;&amp; reposts.length &gt; 0 }>
+				<div class="reposts" if={ reposts && reposts.length &gt; 0 }>
 					<header><a>{ p.repost_count }</a>
 						<p>Repost</p>
 					</header>
 					<ol class="users">
-						<li class="user" each={ reposts }><a class="avatar-anchor" href={ CONFIG.url + '/' + user.username } title={ user.name }><img class="avatar" src={ user.avatar_url + '?thumbnail&amp;size=32' } alt=""/></a></li>
+						<li class="user" each={ reposts }><a class="avatar-anchor" href={ CONFIG.url + '/' + user.username } title={ user.name }><img class="avatar" src={ user.avatar_url + '?thumbnail&size=32' } alt=""/></a></li>
 					</ol>
 				</div>
-				<div class="likes" if={ likes &amp;&amp; likes.length &gt; 0 }>
+				<div class="likes" if={ likes && likes.length &gt; 0 }>
 					<header><a>{ p.likes_count }</a>
 						<p>いいね</p>
 					</header>
 					<ol class="users">
-						<li class="user" each={ likes }><a class="avatar-anchor" href={ CONFIG.url + '/' + username } title={ name }><img class="avatar" src={ avatar_url + '?thumbnail&amp;size=32' } alt=""/></a></li>
+						<li class="user" each={ likes }><a class="avatar-anchor" href={ CONFIG.url + '/' + username } title={ name }><img class="avatar" src={ avatar_url + '?thumbnail&size=32' } alt=""/></a></li>
 					</ol>
 				</div>
 			</div>
diff --git a/src/web/app/mobile/tags/post-form.tag b/src/web/app/mobile/tags/post-form.tag
index 07ecdf171..e2d0c9602 100644
--- a/src/web/app/mobile/tags/post-form.tag
+++ b/src/web/app/mobile/tags/post-form.tag
@@ -13,7 +13,7 @@
 		<div class="attaches" if={ files.length != 0 }>
 			<ul class="files" ref="attaches">
 				<li class="file" each={ files }>
-					<div class="img" style="background-image: url({ url + &quot;?thumbnail&amp;size=64&quot; })" title={ name }></div>
+					<div class="img" style="background-image: url({ url + &quot;?thumbnail&size=64&quot; })" title={ name }></div>
 				</li>
 				<li class="add" if={ files.length &lt; 4 } title="PCからファイルを添付" onclick={ selectFile }><i class="fa fa-plus"></i></li>
 			</ul>
diff --git a/src/web/app/mobile/tags/post-preview.tag b/src/web/app/mobile/tags/post-preview.tag
index 05dcd3ea1..3d646c1c0 100644
--- a/src/web/app/mobile/tags/post-preview.tag
+++ b/src/web/app/mobile/tags/post-preview.tag
@@ -1,5 +1,5 @@
 <mk-post-preview>
-	<article><a class="avatar-anchor" href={ CONFIG.url + '/' + post.user.username }><img class="avatar" src={ post.user.avatar_url + '?thumbnail&amp;size=64' } alt="avatar"/></a>
+	<article><a class="avatar-anchor" href={ CONFIG.url + '/' + post.user.username }><img class="avatar" src={ post.user.avatar_url + '?thumbnail&size=64' } alt="avatar"/></a>
 		<div class="main">
 			<header><a class="name" href={ CONFIG.url + '/' + post.user.username }>{ post.user.name }</a><span class="username">@{ post.user.username }</span><a class="time" href={ CONFIG.url + '/' + post.user.username + '/' + post.id }>
 					<mk-time time={ post.created_at }></mk-time></a></header>
diff --git a/src/web/app/mobile/tags/timeline-post-sub.tag b/src/web/app/mobile/tags/timeline-post-sub.tag
index 82c86f3f6..edfeb4e7e 100644
--- a/src/web/app/mobile/tags/timeline-post-sub.tag
+++ b/src/web/app/mobile/tags/timeline-post-sub.tag
@@ -1,5 +1,5 @@
 <mk-timeline-post-sub>
-	<article><a class="avatar-anchor" href={ '/' + post.user.username }><img class="avatar" src={ post.user.avatar_url + '?thumbnail&amp;size=96' } alt="avatar"/></a>
+	<article><a class="avatar-anchor" href={ '/' + post.user.username }><img class="avatar" src={ post.user.avatar_url + '?thumbnail&size=96' } alt="avatar"/></a>
 		<div class="main">
 			<header><a class="name" href={ '/' + post.user.username }>{ post.user.name }</a><span class="username">@{ post.user.username }</span><a class="created-at" href={ '/' + post.user.username + '/' + post.id }>
 					<mk-time time={ post.created_at }></mk-time></a></header>
diff --git a/src/web/app/mobile/tags/timeline-post.tag b/src/web/app/mobile/tags/timeline-post.tag
index a01326077..cf07f7b5e 100644
--- a/src/web/app/mobile/tags/timeline-post.tag
+++ b/src/web/app/mobile/tags/timeline-post.tag
@@ -3,10 +3,10 @@
 		<mk-timeline-post-sub post={ p.reply_to }></mk-timeline-post-sub>
 	</div>
 	<div class="repost" if={ isRepost }>
-		<p><a class="avatar-anchor" href={ CONFIG.url + '/' + post.user.username }><img class="avatar" src={ post.user.avatar_url + '?thumbnail&amp;size=64' } alt="avatar"/></a><i class="fa fa-retweet"></i><a class="name" href={ CONFIG.url + '/' + post.user.username }>{ post.user.name }</a>がRepost</p>
+		<p><a class="avatar-anchor" href={ CONFIG.url + '/' + post.user.username }><img class="avatar" src={ post.user.avatar_url + '?thumbnail&size=64' } alt="avatar"/></a><i class="fa fa-retweet"></i><a class="name" href={ CONFIG.url + '/' + post.user.username }>{ post.user.name }</a>がRepost</p>
 		<mk-time time={ post.created_at }></mk-time>
 	</div>
-	<article><a class="avatar-anchor" href={ CONFIG.url + '/' + p.user.username }><img class="avatar" src={ p.user.avatar_url + '?thumbnail&amp;size=96' } alt="avatar"/></a>
+	<article><a class="avatar-anchor" href={ CONFIG.url + '/' + p.user.username }><img class="avatar" src={ p.user.avatar_url + '?thumbnail&size=96' } alt="avatar"/></a>
 		<div class="main">
 			<header><a class="name" href={ CONFIG.url + '/' + p.user.username }>{ p.user.name }</a><span class="username">@{ p.user.username }</span><a class="created-at" href={ url }>
 					<mk-time time={ p.created_at }></mk-time></a></header>
diff --git a/src/web/app/mobile/tags/timeline.tag b/src/web/app/mobile/tags/timeline.tag
index 99cc94029..ad5311842 100644
--- a/src/web/app/mobile/tags/timeline.tag
+++ b/src/web/app/mobile/tags/timeline.tag
@@ -1,9 +1,9 @@
 <mk-timeline>
 	<div class="init" if={ init }><i class="fa fa-spinner fa-pulse"></i>読み込んでいます</div>
-	<div class="empty" if={ !init &amp;&amp; posts.length == 0 }><i class="fa fa-comments-o"></i>{ opts.empty || '表示するものがありません' }</div>
+	<div class="empty" if={ !init && posts.length == 0 }><i class="fa fa-comments-o"></i>{ opts.empty || '表示するものがありません' }</div>
 	<virtual each={ post, i in posts }>
 		<mk-timeline-post post={ post }></mk-timeline-post>
-		<p class="date" if={ i != posts.length - 1 &amp;&amp; post._date != posts[i + 1]._date }><span><i class="fa fa-angle-up"></i>{ post._datetext }</span><span><i class="fa fa-angle-down"></i>{ posts[i + 1]._datetext }</span></p>
+		<p class="date" if={ i != posts.length - 1 && post._date != posts[i + 1]._date }><span><i class="fa fa-angle-up"></i>{ post._datetext }</span><span><i class="fa fa-angle-down"></i>{ posts[i + 1]._datetext }</span></p>
 	</virtual>
 	<footer if={ !init }>
 		<button if={ canFetchMore } onclick={ more } disabled={ fetching }><span if={ !fetching }>もっとみる</span><span if={ fetching }>読み込み中
diff --git a/src/web/app/mobile/tags/ui-nav.tag b/src/web/app/mobile/tags/ui-nav.tag
index 68a616774..6775434fc 100644
--- a/src/web/app/mobile/tags/ui-nav.tag
+++ b/src/web/app/mobile/tags/ui-nav.tag
@@ -1,6 +1,6 @@
 <mk-ui-nav>
 	<div class="body">
-		<div class="content"><a class="me" if={ SIGNIN } href={ CONFIG.url + '/' + I.username }><img class="avatar" src={ I.avatar_url + '?thumbnail&amp;size=128' } alt="avatar"/>
+		<div class="content"><a class="me" if={ SIGNIN } href={ CONFIG.url + '/' + I.username }><img class="avatar" src={ I.avatar_url + '?thumbnail&size=128' } alt="avatar"/>
 				<p class="name">{ I.name }</p></a>
 			<div class="links">
 				<ul>
diff --git a/src/web/app/mobile/tags/user-preview.tag b/src/web/app/mobile/tags/user-preview.tag
index eae903db9..7310bf96b 100644
--- a/src/web/app/mobile/tags/user-preview.tag
+++ b/src/web/app/mobile/tags/user-preview.tag
@@ -1,4 +1,4 @@
-<mk-user-preview><a class="avatar-anchor" href={ CONFIG.url + '/' + user.username }><img class="avatar" src={ user.avatar_url + '?thumbnail&amp;size=64' } alt="avatar"/></a>
+<mk-user-preview><a class="avatar-anchor" href={ CONFIG.url + '/' + user.username }><img class="avatar" src={ user.avatar_url + '?thumbnail&size=64' } alt="avatar"/></a>
 	<div class="main">
 		<header><a class="name" href={ CONFIG.url + '/' + user.username }>{ user.name }</a><span class="username">@{ user.username }</span></header>
 		<div class="body">
diff --git a/src/web/app/mobile/tags/user.tag b/src/web/app/mobile/tags/user.tag
index fc3a15e83..76b694a46 100644
--- a/src/web/app/mobile/tags/user.tag
+++ b/src/web/app/mobile/tags/user.tag
@@ -1,10 +1,10 @@
 <mk-user>
 	<div class="user" if={ !fetching }>
 		<header>
-			<div class="banner" style={ user.banner_url ? 'background-image: url(' + user.banner_url + '?thumbnail&amp;size=1024)' : '' }></div>
+			<div class="banner" style={ user.banner_url ? 'background-image: url(' + user.banner_url + '?thumbnail&size=1024)' : '' }></div>
 			<div class="body">
-				<div class="top"><a class="avatar"><img src={ user.avatar_url + '?thumbnail&amp;size=160' } alt="avatar"/></a>
-					<mk-follow-button if={ SIGNIN &amp;&amp; I.id != user.id } user={ user }></mk-follow-button>
+				<div class="top"><a class="avatar"><img src={ user.avatar_url + '?thumbnail&size=160' } alt="avatar"/></a>
+					<mk-follow-button if={ SIGNIN && I.id != user.id } user={ user }></mk-follow-button>
 				</div>
 				<div class="title">
 					<h1>{ user.name }</h1><span class="username">@{ user.username }</span><span class="followed" if={ user.is_followed }>フォローされています</span>
diff --git a/src/web/app/mobile/tags/users-list.tag b/src/web/app/mobile/tags/users-list.tag
index 32c54019e..269625d1d 100644
--- a/src/web/app/mobile/tags/users-list.tag
+++ b/src/web/app/mobile/tags/users-list.tag
@@ -1,13 +1,13 @@
 <mk-users-list>
 	<nav><span data-is-active={ mode == 'all' } onclick={ setMode.bind(this, 'all') }>すべて<span>{ opts.count }</span></span>
-		<!-- ↓ https://github.com/riot/riot/issues/2080--><span if={ SIGNIN &amp;&amp; opts.youKnowCount != '' } data-is-active={ mode == 'iknow' } onclick={ setMode.bind(this, 'iknow') }>知り合い<span>{ opts.youKnowCount }</span></span>
+		<!-- ↓ https://github.com/riot/riot/issues/2080--><span if={ SIGNIN && opts.youKnowCount != '' } data-is-active={ mode == 'iknow' } onclick={ setMode.bind(this, 'iknow') }>知り合い<span>{ opts.youKnowCount }</span></span>
 	</nav>
-	<div class="users" if={ !fetching &amp;&amp; users.length != 0 }>
+	<div class="users" if={ !fetching && users.length != 0 }>
 		<mk-user-preview each={ users } user={ this }></mk-user-preview>
 	</div>
-	<button class="more" if={ !fetching &amp;&amp; next != null } onclick={ more } disabled={ moreFetching }><span if={ !moreFetching }>もっと</span><span if={ moreFetching }>読み込み中
+	<button class="more" if={ !fetching && next != null } onclick={ more } disabled={ moreFetching }><span if={ !moreFetching }>もっと</span><span if={ moreFetching }>読み込み中
 			<mk-ellipsis></mk-ellipsis></span></button>
-	<p class="no" if={ !fetching &amp;&amp; users.length == 0 }>{ opts.noUsers }</p>
+	<p class="no" if={ !fetching && users.length == 0 }>{ opts.noUsers }</p>
 	<p class="fetching" if={ fetching }><i class="fa fa-spinner fa-pulse fa-fw"></i>読み込んでいます
 		<mk-ellipsis></mk-ellipsis>
 	</p>