diff --git a/src/webui/www/private/addpeers.html b/src/webui/www/private/addpeers.html
index b665e5e75..4a23ace3d 100644
--- a/src/webui/www/private/addpeers.html
+++ b/src/webui/www/private/addpeers.html
@@ -62,8 +62,8 @@
         <p>QBT_TR(List of peers to add (one IP per line):)QBT_TR[CONTEXT=PeersAdditionDialog]</p>
         <textarea id="peers" rows="10" style="width: 100%;" placeholder="QBT_TR(Format: IPv4:port / [IPv6]:port)QBT_TR[CONTEXT=PeersAdditionDialog]"></textarea>
         <div style="margin-top: 10px; text-align: center;">
-            <button onclick="parent.closeWindows();">QBT_TR(Cancel)QBT_TR[CONTEXT=PeersAdditionDialog]</button>
-            <button id="addPeersOk">QBT_TR(Ok)QBT_TR[CONTEXT=PeersAdditionDialog]</button>
+            <button type="button" onclick="parent.closeWindows();">QBT_TR(Cancel)QBT_TR[CONTEXT=PeersAdditionDialog]</button>
+            <button type="button" id="addPeersOk">QBT_TR(Ok)QBT_TR[CONTEXT=PeersAdditionDialog]</button>
         </div>
     </div>
 </body>
diff --git a/src/webui/www/private/download.html b/src/webui/www/private/download.html
index aac526fcb..913a10001 100644
--- a/src/webui/www/private/download.html
+++ b/src/webui/www/private/download.html
@@ -13,7 +13,7 @@
 </head>
 
 <body>
-    <iframe id="download_frame" name="download_frame" class="invisible" src="about:blank"></iframe>
+    <iframe id="download_frame" name="download_frame" class="invisible" title="" src="about:blank"></iframe>
     <form action="api/v2/torrents/add" enctype="multipart/form-data" method="post" id="downloadForm" style="text-align: center;" target="download_frame" autocorrect="off" autocapitalize="none">
         <div style="text-align: center;">
             <br />
diff --git a/src/webui/www/private/downloadlimit.html b/src/webui/www/private/downloadlimit.html
index 4371c9fb1..fa49266dd 100644
--- a/src/webui/www/private/downloadlimit.html
+++ b/src/webui/www/private/downloadlimit.html
@@ -14,7 +14,7 @@
 <body>
     <div style="width: 100%; text-align: center; margin: 0 auto; overflow: hidden">
         <div id="dllimitSlider" class="slider">
-            <div id="dllimitUpdate" class="update">QBT_TR(Download limit:)QBT_TR[CONTEXT=PropertiesWidget] <input id="dllimitUpdatevalue" size="6" placeholder="∞" style="text-align: center;"> <span id="dlLimitUnit">QBT_TR(KiB/s)QBT_TR[CONTEXT=SpeedLimitDialog]</span></div>
+            <div id="dllimitUpdate" class="update">QBT_TR(Download limit:)QBT_TR[CONTEXT=PropertiesWidget] <input type="text" id="dllimitUpdatevalue" size="6" placeholder="∞" style="text-align: center;"> <span id="dlLimitUnit">QBT_TR(KiB/s)QBT_TR[CONTEXT=SpeedLimitDialog]</span></div>
             <div class="sliderWrapper">
                 <div id="dllimitSliderknob" class="sliderknob"></div>
                 <div id="dllimitSliderarea" class="sliderarea"></div>
diff --git a/src/webui/www/private/edittracker.html b/src/webui/www/private/edittracker.html
index 6d23c1956..17d2a92d2 100644
--- a/src/webui/www/private/edittracker.html
+++ b/src/webui/www/private/edittracker.html
@@ -61,7 +61,7 @@
         <br />
         <h2 class="vcenter">QBT_TR(Tracker URL:)QBT_TR[CONTEXT=TrackerListWidget]</h2>
         <div style="text-align: center; padding-top: 10px;">
-            <input id="trackerUrl" style="width: 90%;" />
+            <input type="text" id="trackerUrl" style="width: 90%;" />
         </div>
         <br />
         <input type="button" value="QBT_TR(Edit)QBT_TR[CONTEXT=HttpServer]" id="editTrackerButton" />
diff --git a/src/webui/www/private/upload.html b/src/webui/www/private/upload.html
index 7ae768adc..c3b8e66b5 100644
--- a/src/webui/www/private/upload.html
+++ b/src/webui/www/private/upload.html
@@ -11,7 +11,7 @@
 </head>
 
 <body>
-    <iframe id="upload_frame" name="upload_frame" class="invisible" src="about:blank"></iframe>
+    <iframe id="upload_frame" name="upload_frame" class="invisible" title="" src="about:blank"></iframe>
     <form action="api/v2/torrents/add" enctype="multipart/form-data" method="post" id="uploadForm" style="text-align: center;" target="upload_frame" autocorrect="off" autocapitalize="none">
         <div style="margin-top: 25px; display: inline-block; border: 1px solid lightgrey; border-radius: 4px;">
             <input type="file" id="fileselect" accept=".torrent, application/x-bittorrent" name="fileselect[]" multiple />
diff --git a/src/webui/www/private/uploadlimit.html b/src/webui/www/private/uploadlimit.html
index 044a8cf05..e6cb93ef6 100644
--- a/src/webui/www/private/uploadlimit.html
+++ b/src/webui/www/private/uploadlimit.html
@@ -14,7 +14,7 @@
 <body>
     <div style="width: 100%; text-align: center; margin: 0 auto; overflow: hidden">
         <div id="uplimitSlider" class="slider">
-            <div id="uplimitUpdate" class="update">QBT_TR(Upload limit:)QBT_TR[CONTEXT=PropertiesWidget] <input id="uplimitUpdatevalue" size="6" placeholder="∞" style="text-align: center;"> <span id="upLimitUnit">QBT_TR(KiB/s)QBT_TR[CONTEXT=SpeedLimitDialog]</span></div>
+            <div id="uplimitUpdate" class="update">QBT_TR(Upload limit:)QBT_TR[CONTEXT=PropertiesWidget] <input type="text" id="uplimitUpdatevalue" size="6" placeholder="∞" style="text-align: center;"> <span id="upLimitUnit">QBT_TR(KiB/s)QBT_TR[CONTEXT=SpeedLimitDialog]</span></div>
             <div class="sliderWrapper">
                 <div id="uplimitSliderknob" class="sliderknob"></div>
                 <div id="uplimitSliderarea" class="sliderarea"></div>
diff --git a/src/webui/www/private/views/installsearchplugin.html b/src/webui/www/private/views/installsearchplugin.html
index e9526dcd4..5e8d1a0d6 100644
--- a/src/webui/www/private/views/installsearchplugin.html
+++ b/src/webui/www/private/views/installsearchplugin.html
@@ -20,8 +20,8 @@
     <div>
         <input type="text" id="newPluginPath" placeholder="QBT_TR(URL or local directory)QBT_TR[CONTEXT=PluginSourceDlg]" autocorrect="off" autocapitalize="none" />
         <div style="margin-top: 10px; text-align: center;">
-            <button id="newPluginCancel" onclick="qBittorrent.SearchPlugins.closeSearchWindow('installSearchPlugin');">QBT_TR(Cancel)QBT_TR[CONTEXT=PluginSourceDlg]</button>
-            <button id="newPluginOk" onclick="qBittorrent.InstallSearchPlugin.newPluginOk();">QBT_TR(Ok)QBT_TR[CONTEXT=PluginSourceDlg]</button>
+            <button type="button" id="newPluginCancel" onclick="qBittorrent.SearchPlugins.closeSearchWindow('installSearchPlugin');">QBT_TR(Cancel)QBT_TR[CONTEXT=PluginSourceDlg]</button>
+            <button type="button" id="newPluginOk" onclick="qBittorrent.InstallSearchPlugin.newPluginOk();">QBT_TR(Ok)QBT_TR[CONTEXT=PluginSourceDlg]</button>
         </div>
     </div>
 </div>
diff --git a/src/webui/www/private/views/log.html b/src/webui/www/private/views/log.html
index 17679e434..e63e68339 100644
--- a/src/webui/www/private/views/log.html
+++ b/src/webui/www/private/views/log.html
@@ -94,7 +94,7 @@
             </select>
 
             <input type="text" id="filterTextInput" onkeyup="window.qBittorrent.Log.filterTextChanged()" placeholder="QBT_TR(Filter logs)QBT_TR[CONTEXT=ExecutionLogWidget]" autocomplete="off" autocorrect="off" autocapitalize="none" />
-            <button title="Clear input" onclick="javascript:document.querySelector('#filterTextInput').value='';window.qBittorrent.Log.filterTextChanged();">QBT_TR(Clear)QBT_TR[CONTEXT=ExecutionLogWidget]</button>
+            <button type="button" title="Clear input" onclick="javascript:document.querySelector('#filterTextInput').value='';window.qBittorrent.Log.filterTextChanged();">QBT_TR(Clear)QBT_TR[CONTEXT=ExecutionLogWidget]</button>
         </div>
 
         <div id="logFilterSummary">
diff --git a/src/webui/www/private/views/preferences.html b/src/webui/www/private/views/preferences.html
index e2445cbf3..d7795d1d3 100644
--- a/src/webui/www/private/views/preferences.html
+++ b/src/webui/www/private/views/preferences.html
@@ -303,7 +303,7 @@
         <div class="formRow">
             <label for="port_value">QBT_TR(Port used for incoming connections:)QBT_TR[CONTEXT=OptionsDialog]</label>
             <input type="text" id="port_value" style="width: 4em;" title="QBT_TR(Set to 0 to let your system pick an unused port)QBT_TR[CONTEXT=OptionsDialog]" />
-            <button style="margin-left: 1em;" onclick="qBittorrent.Preferences.generateRandomPort();">QBT_TR(Random)QBT_TR[CONTEXT=OptionsDialog]</button>
+            <button type="button" style="margin-left: 1em;" onclick="qBittorrent.Preferences.generateRandomPort();">QBT_TR(Random)QBT_TR[CONTEXT=OptionsDialog]</button>
         </div>
         <div class="formRow">
             <input type="checkbox" id="upnp_checkbox" />
@@ -707,7 +707,7 @@
             <input type="checkbox" id="enable_auto_downloading_rss_torrents_checkbox" />
             <label for="enable_auto_downloading_rss_torrents_checkbox">QBT_TR(Enable auto downloading of RSS torrents)QBT_TR[CONTEXT=OptionsDialog]</label>
         </div>
-        <button style="margin: 0 1em; width: calc(100% - 2.2em)" onclick="window.qBittorrent.Rss.openRssDownloader();">QBT_TR(Edit auto downloading rules...)QBT_TR[CONTEXT=OptionsDialog]</button>
+        <button type="button" style="margin: 0 1em; width: calc(100% - 2.2em)" onclick="window.qBittorrent.Rss.openRssDownloader();">QBT_TR(Edit auto downloading rules...)QBT_TR[CONTEXT=OptionsDialog]</button>
     </fieldset>
 
     <fieldset class="settings">
diff --git a/src/webui/www/private/views/rss.html b/src/webui/www/private/views/rss.html
index 56c915280..4599440b0 100644
--- a/src/webui/www/private/views/rss.html
+++ b/src/webui/www/private/views/rss.html
@@ -89,11 +89,11 @@
             QBT_TR(Fetching of RSS feeds is disabled now! You can enable it in application settings.)QBT_TR[CONTEXT=RSSWidget]
         </div>
         <div id="rssButtonBar">
-            <button id="newSubscriptionButton" onclick="qBittorrent.Rss.addRSSFeed()">QBT_TR(New subscription)QBT_TR[CONTEXT=RSSWidget]</button>
-            <button id="markReadButton" onclick="qBittorrent.Rss.markSelectedAsRead()">QBT_TR(Mark items read)QBT_TR[CONTEXT=RSSWidget]</button>
-            <button id="updateAllButton" onclick="qBittorrent.Rss.refreshAllFeeds()">QBT_TR(Update all)QBT_TR[CONTEXT=RSSWidget]</button>
+            <button type="button" id="newSubscriptionButton" onclick="qBittorrent.Rss.addRSSFeed()">QBT_TR(New subscription)QBT_TR[CONTEXT=RSSWidget]</button>
+            <button type="button" id="markReadButton" onclick="qBittorrent.Rss.markSelectedAsRead()">QBT_TR(Mark items read)QBT_TR[CONTEXT=RSSWidget]</button>
+            <button type="button" id="updateAllButton" onclick="qBittorrent.Rss.refreshAllFeeds()">QBT_TR(Update all)QBT_TR[CONTEXT=RSSWidget]</button>
 
-            <button id="rssDownloaderButton" class="alignRight" onclick="qBittorrent.Rss.openRssDownloader()">QBT_TR(RSS Downloader...)QBT_TR[CONTEXT=RSSWidget]</button>
+            <button type="button" id="rssDownloaderButton" class="alignRight" onclick="qBittorrent.Rss.openRssDownloader()">QBT_TR(RSS Downloader...)QBT_TR[CONTEXT=RSSWidget]</button>
         </div>
     </div>
     <div id="rssContentView">
diff --git a/src/webui/www/private/views/rssDownloader.html b/src/webui/www/private/views/rssDownloader.html
index fb396e54e..bd036e437 100644
--- a/src/webui/www/private/views/rssDownloader.html
+++ b/src/webui/www/private/views/rssDownloader.html
@@ -136,8 +136,8 @@
     <div id="leftRssDownloaderColumn">
         <div id="topMenuBar">
             <b id="rulesTableDesc">QBT_TR(Download Rules)QBT_TR[CONTEXT=AutomatedRssDownloader]</b>
-            <button id="newRuleButton" class="imageButton" onclick="qBittorrent.RssDownloader.addRule()"></button>
-            <button id="deleteRuleButton" class="imageButton" onclick="qBittorrent.RssDownloader.removeSelectedRule()"></button>
+            <button type="button" id="newRuleButton" class="imageButton" onclick="qBittorrent.RssDownloader.addRule()"></button>
+            <button type="button" id="deleteRuleButton" class="imageButton" onclick="qBittorrent.RssDownloader.removeSelectedRule()"></button>
         </div>
         <div id="rulesTable">
             <div id="rulesSelectionCheckBoxList">
@@ -285,7 +285,7 @@ Supports the formats: S01E01, 1x1, 2017.12.31 and 31.12.2017 (Date formats also
                 </div>
             </div>
         </fieldset>
-        <button disabled id="saveButton" onclick="qBittorrent.RssDownloader.saveSettings()">
+        <button disabled type="button" id="saveButton" onclick="qBittorrent.RssDownloader.saveSettings()">
             QBT_TR(Save)QBT_TR[CONTEXT=HttpServer]
         </button>
     </div>
diff --git a/src/webui/www/private/views/search.html b/src/webui/www/private/views/search.html
index b37ca8541..fbae44ae8 100644
--- a/src/webui/www/private/views/search.html
+++ b/src/webui/www/private/views/search.html
@@ -83,7 +83,7 @@
             <input type="text" id="searchPattern" class="searchInputField" placeholder="QBT_TR(Search)QBT_TR[CONTEXT=SearchEngineWidget]" autocorrect="off" autocomplete="off" autocapitalize="none" />
             <select id="categorySelect" class="searchInputField" onchange="qBittorrent.Search.categorySelected()"></select>
             <select id="pluginsSelect" class="searchInputField" onchange="qBittorrent.Search.pluginSelected()"></select>
-            <button id="startSearchButton" class="searchInputField" onclick="qBittorrent.Search.startStopSearch()">QBT_TR(Search)QBT_TR[CONTEXT=SearchEngineWidget]</button>
+            <button type="button" id="startSearchButton" class="searchInputField" onclick="qBittorrent.Search.startStopSearch()">QBT_TR(Search)QBT_TR[CONTEXT=SearchEngineWidget]</button>
         </div>
     </div>
 
@@ -167,7 +167,7 @@
     </div>
 
     <div style="height: 30px; padding-top: 10px;">
-        <button id="manageSearchPlugins" onclick="qBittorrent.Search.manageSearchPlugins()">QBT_TR(Search plugins...)QBT_TR[CONTEXT=SearchEngineWidget]</button>
+        <button type="button" id="manageSearchPlugins" onclick="qBittorrent.Search.manageSearchPlugins()">QBT_TR(Search plugins...)QBT_TR[CONTEXT=SearchEngineWidget]</button>
     </div>
 </div>
 
diff --git a/src/webui/www/private/views/searchplugins.html b/src/webui/www/private/views/searchplugins.html
index 0978887cd..6a097cbd3 100644
--- a/src/webui/www/private/views/searchplugins.html
+++ b/src/webui/www/private/views/searchplugins.html
@@ -65,9 +65,9 @@
     <span>QBT_TR(Warning: Be sure to comply with your country's copyright laws when downloading torrents from any of these search engines.)QBT_TR[CONTEXT=PluginSelectDlg]</span>
     <span style="font-style: italic;">QBT_TR(You can get new search engine plugins here:)QBT_TR[CONTEXT=PluginSelectDlg] <a href="http://plugins.qbittorrent.org" target="_blank">http://plugins.qbittorrent.org</a></span>
     <div style="width: 100%; margin-top: 10px;">
-        <button style="width: 33%; line-height: 1.4em;" onclick="qBittorrent.SearchPlugins.installPlugin();">QBT_TR(Install new plugin)QBT_TR[CONTEXT=PluginSelectDlg]</button>
-        <button style="width: 33%; line-height: 1.4em;" onclick="qBittorrent.SearchPlugins.checkForUpdates();">QBT_TR(Check for updates)QBT_TR[CONTEXT=PluginSelectDlg]</button>
-        <button style="width: 32%; line-height: 1.4em;" onclick="qBittorrent.SearchPlugins.closeSearchWindow('searchPlugins');">QBT_TR(Close)QBT_TR[CONTEXT=PluginSelectDlg]</button>
+        <button type="button" style="width: 33%; line-height: 1.4em;" onclick="qBittorrent.SearchPlugins.installPlugin();">QBT_TR(Install new plugin)QBT_TR[CONTEXT=PluginSelectDlg]</button>
+        <button type="button" style="width: 33%; line-height: 1.4em;" onclick="qBittorrent.SearchPlugins.checkForUpdates();">QBT_TR(Check for updates)QBT_TR[CONTEXT=PluginSelectDlg]</button>
+        <button type="button" style="width: 32%; line-height: 1.4em;" onclick="qBittorrent.SearchPlugins.closeSearchWindow('searchPlugins');">QBT_TR(Close)QBT_TR[CONTEXT=PluginSelectDlg]</button>
     </div>
 </div>
 
