diff --git a/src/web/app/auth/tags/form.tag b/src/web/app/auth/tags/form.tag
index 9ba6e97f8e..2007e1e5ce 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 89b5e12ed4..5f8c5fe729 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 0d245c6c0b..508b37c1b7 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 8a1337406b..7316d91c89 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 7a1797cc19..a3a16624bc 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 c0dbc4f22d..1bd1cdc80f 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 733dbee4b3..687695fd85 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 586fe708c9..22d592cf09 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 3384b694a8..1a43e1cccd 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 8c267f6941..941c64b06d 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 307287b864..df9f271d29 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 784d9db23c..81c2da13cd 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 f33bbd87d1..f975f9b5ef 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 c3b09f5f5b..ddf1eae523 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 cf55aef65c..b0c6866886 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 7951c400e6..b91486a911 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 7c9170e197..86f1619810 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 6647ffd4a0..8746223fc9 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 d77ada3b4f..1c74469ea6 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 a366ee5d60..6c0c6952f1 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 6f1ef3cc66..2e0c191566 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 bd6e874300..b4920ffc2b 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 c911a4d1d9..45b5808000 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 ff5094aa2e..cc2e0aed37 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 cb3d276cfe..d6f93ca211 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 082a211a62..9683859477 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 06a7b24186..b088ceaac9 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 ca2cc8cca0..cb4e44dc46 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 5dd601ea20..b19e875f68 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 26ba0e1481..f012ddfd71 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 a4fd0b7496..2b12626397 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 b20154a90e..a87f5b88d2 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 da9f8c32c3..40ba9ea246 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 193b8cb2e9..b9ea412248 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 686e40a0e7..9b34f6caf4 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 42a8274e57..14416209b4 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 960bb3ae08..80e71f3594 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 09db2eef7c..52ba76c3d9 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 4f00ec56da..d9a5beff22 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 06e730c5e1..8886462ab2 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 9b52d24d3e..a746dc1cf1 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 54abfd3b1d..5653a8f0b4 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 abf1db87c6..f07f6cb6c3 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 5e9c45b2b3..835a5f7f55 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 81007e1075..6746347a44 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 eae935950d..c7535dd403 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 9b7ce478aa..98ec368f2a 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 702a00ba63..bcc2f2ea6e 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 5220198a73..7a0909b00c 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 a88c4a1003..5461c15f33 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 c649ebe5f5..1df502d10b 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 07ecdf1714..e2d0c96024 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 05dcd3ea1c..3d646c1c0a 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 82c86f3f66..edfeb4e7e6 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 a013260777..cf07f7b5e2 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 99cc940297..ad53118426 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 68a6167740..6775434fce 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 eae903db9d..7310bf96bd 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 fc3a15e836..76b694a464 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 32c54019e3..269625d1d4 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>