diff --git a/searx/templates/simple/filters/languages.html b/searx/templates/simple/filters/languages.html
index 710c18c92..0e778ebae 100644
--- a/searx/templates/simple/filters/languages.html
+++ b/searx/templates/simple/filters/languages.html
@@ -1,4 +1,4 @@
-<select class="language" id="language" name="language" tabindex="1">{{- '' -}}
+<select class="language" id="language" name="language" aria-label="{{ _('Search language') }}">{{- '' -}}
 	<option value="all" {% if current_language == 'all' %}selected="selected"{% endif %}>{{ _('Default language') }}</option>
 	{%- for lang_id,lang_name,country_name,english_name in language_codes | sort(attribute=1) -%}
 	<option value="{{ lang_id }}" {% if lang_id == current_language %}selected="selected"{% endif %}>
diff --git a/searx/templates/simple/filters/safesearch.html b/searx/templates/simple/filters/safesearch.html
index a146e6710..7d2a6b5b7 100644
--- a/searx/templates/simple/filters/safesearch.html
+++ b/searx/templates/simple/filters/safesearch.html
@@ -1,5 +1,5 @@
-<select  name="safesearch" id="safesearch" class="safesearch" tabindex="3">
-    <option value="2" {% if safesearch == '2' %}selected="selected"{% endif %}>{{ _("SafeSearch") + ": " + _('Strict') }}</option>
-    <option value="1" {% if safesearch == '1' %}selected="selected"{% endif %}>{{ _("SafeSearch") + ": " + _('Moderate') }}</option>
-    <option value="0" {% if safesearch == '0' %}selected="selected"{% endif %}>{{ _("SafeSearch") + ": " + _('None') }}</option>
+<select  name="safesearch" id="safesearch" class="safesearch" aria-label="{{ _('SafeSearch') }}">
+    <option value="2" {% if safesearch == '2' %}selected="selected"{% endif %} aria-label="{{ _('Strict') }}">{{ _("SafeSearch") + ": " + _('Strict') }}</option>
+    <option value="1" {% if safesearch == '1' %}selected="selected"{% endif %} aria-label="{{ _('Moderate') }}">{{ _("SafeSearch") + ": " + _('Moderate') }}</option>
+    <option value="0" {% if safesearch == '0' %}selected="selected"{% endif %} aria-label="{{ _('None') }}">{{ _("SafeSearch") + ": " + _('None') }}</option>
 </select>
diff --git a/searx/templates/simple/filters/time_range.html b/searx/templates/simple/filters/time_range.html
index 2c85edf92..faf1ab419 100644
--- a/searx/templates/simple/filters/time_range.html
+++ b/searx/templates/simple/filters/time_range.html
@@ -1,4 +1,4 @@
-<select name="time_range" id="time_range" class="time_range" tabindex="2">{{- '' -}}
+<select name="time_range" id="time_range" class="time_range" aria-label="{{ _('Time range') }}">{{- '' -}}
     <option id="time-range-anytime" value="" {{ "selected" if time_range=="" or not time_range  else ""}}>
         {{- _('Anytime') -}}
     </option>{{- '' -}}
diff --git a/searx/templates/simple/infobox.html b/searx/templates/simple/infobox.html
index 24e0920b3..bb9dc8524 100644
--- a/searx/templates/simple/infobox.html
+++ b/searx/templates/simple/infobox.html
@@ -1,4 +1,4 @@
-<aside class="infobox">
+<aside class="infobox" aria-label="{{ infobox.infobox }}">
   <h2><bdi>{{ infobox.infobox }}</bdi></h2>
   {% if infobox.img_src %}<img src="{{ image_proxify(infobox.img_src) }}" title="{{ infobox.infobox|striptags }}" alt="{{ infobox.infobox|striptags }}">{%- endif -%}
   <p><bdi>{{ infobox.content | safe }}</bdi></p>
diff --git a/searx/templates/simple/macros.html b/searx/templates/simple/macros.html
index a751ce187..637966715 100644
--- a/searx/templates/simple/macros.html
+++ b/searx/templates/simple/macros.html
@@ -56,11 +56,9 @@
 {%- endmacro -%}
 
 {%- macro tab_header(name, id, label) -%}
-<input type="radio" name="{{ name }}" id="tab_{{ id }}"/>
-<label for="tab_{{ id }}" role="tab"
-       aria-controls="panel{{ id }}">{{ label }}</label>
-<section id="tab-content{{ id }}" role="tabpanel"
-         aria-labelledby="{{ label }}" aria-hidden="false">
+<input type="radio" name="{{ name }}" id="tab-{{ id }}"/>
+<label id="tab-label-{{ label }}" for="tab-{{ id }}" role="tab" aria-controls="tab-content-{{ id }}">{{ label }}</label>
+<section id="tab-content-{{ id }}" role="tabpanel" aria-labelledby="tab-label-{{ label }}" aria-hidden="false">
 {%- endmacro -%}
 
 {%- macro tab_footer() -%}
diff --git a/searx/templates/simple/preferences.html b/searx/templates/simple/preferences.html
index 659e93f9a..84e1d6e77 100644
--- a/searx/templates/simple/preferences.html
+++ b/searx/templates/simple/preferences.html
@@ -112,23 +112,23 @@
     {% endif %}
     {% if 'language' not in locked_preferences %}
     <fieldset>
-      <legend>{{ _('Search language') }}</legend>
+      <legend id="pref_language">{{ _('Search language') }}</legend>
       <p class="value">{{- '' -}}
-        <select name='language'>{{- '' -}}
+        <select name='language' aria-labelledby="pref_language" aria-describedby="desc_language">{{- '' -}}
           <option value="all" {% if current_language == 'all' %}selected="selected"{% endif %}>{{ _('Default language') }}</option>
           {%- for lang_id,lang_name,country_name,english_name in language_codes | sort(attribute=1) -%}
           <option value="{{ lang_id }}" {% if lang_id == current_language %}selected="selected"{% endif %}>{{ lang_name }} {% if country_name %}({{ country_name }}) {% endif %}- {{ lang_id }}</option>
           {%- endfor -%}
         </select>{{- '' -}}
       </p>
-      <div class="description">{{ _('What language do you prefer for search?') }}</div>
+      <div class="description" id="desc_language">{{ _('What language do you prefer for search?') }}</div>
     </fieldset>
     {% endif %}
     {% if 'autocomplete' not in locked_preferences %}
     <fieldset>
-      <legend>{{ _('Autocomplete') }}</legend>
+      <legend id="pref_autocomplete">{{ _('Autocomplete') }}</legend>
       <p class="value">
-        <select name="autocomplete">
+        <select name="autocomplete" aria-labelledby="pref_autocomplete">
           <option value=""> - </option>
           {%- for backend in autocomplete_backends -%}
           <option value="{{ backend }}" {% if backend == autocomplete %}selected="selected"{% endif %}>{{ backend }}</option>
@@ -140,9 +140,9 @@
     {% endif %}
     {% if 'safesearch' not in locked_preferences %}
     <fieldset>
-      <legend>{{ _('SafeSearch') }}</legend>
+      <legend id="pref_safesearch">{{ _('SafeSearch') }}</legend>
       <p class="value">
-        <select name='safesearch'>
+        <select name='safesearch' aria-labelledby="pref_safesearch">
           <option value="2" {% if safesearch == '2' %}selected="selected"{% endif %}>{{ _('Strict') }}</option>
           <option value="1" {% if safesearch == '1' %}selected="selected"{% endif %}>{{ _('Moderate') }}</option>
           <option value="0" {% if safesearch == '0' %}selected="selected"{% endif %}>{{ _('None') }}</option>
@@ -154,9 +154,9 @@
     {{ plugin_preferences('general') }}
     {% if 'doi_resolver' not in locked_preferences %}
     <fieldset>
-      <legend>{{ _('Open Access DOI resolver') }}</legend>
+      <legend id="pref_doi_resolver">{{ _('Open Access DOI resolver') }}</legend>
       <p class="value">
-        <select id='doi_resolver' name='doi_resolver'>
+        <select id='doi_resolver' name='doi_resolver' aria-labelledby="pref_doi_resolver">
         {%- for doi_resolver_name,doi_resolver_url in doi_resolvers.items() -%}
           <option value="{{ doi_resolver_name }}" {% if doi_resolver_url == current_doi_resolver %}selected="selected"{% endif %}>
           {{- doi_resolver_name }} - {{ doi_resolver_url -}}
@@ -168,9 +168,9 @@
     </fieldset>
     {% endif %}
     <fieldset>
-      <legend>{{ _('Engine tokens') }}</legend>
+      <legend id="pref_tokens">{{ _('Engine tokens') }}</legend>
       <p class="value">
-        <input name="tokens" type="text" autocomplete="off" spellcheck="false" autocorrect="off" value='{{ preferences.tokens.get_value() }}'/>
+        <input name="tokens" aria-labelledby="pref_tokens" type="text" autocomplete="off" spellcheck="false" autocorrect="off" value='{{ preferences.tokens.get_value() }}'/>
       </p>
       <p class="description">{{ _('Access tokens for private engines') }}</p>
     </fieldset>
@@ -179,9 +179,9 @@
   {{ tab_header('maintab', 'ui', _('User interface')) }}
     {% if 'locale' not in locked_preferences %}
     <fieldset>
-      <legend>{{ _('Interface language') }}</legend>
+      <legend id="pref_locale">{{ _('Interface language') }}</legend>
       <p class="value">
-        <select name='locale'>
+        <select name='locale' aria-labelledby="pref_locale">
           {%- for locale_id,locale_name in locales.items() | sort -%}
           <option value="{{ locale_id }}" {% if locale_id == current_locale %}selected="selected"{% endif %}>{{ locale_name }}</option>
           {%- endfor -%}
@@ -192,9 +192,9 @@
     {% endif %}
     {% if 'theme' not in locked_preferences %}
     <fieldset>
-      <legend>{{ _('Theme') }}</legend>
+      <legend id="pref_theme">{{ _('Theme') }}</legend>
       <p class="value">
-        <select name="theme">
+        <select name="theme" aria-labelledby="pref_theme">
           {%- for name in themes -%}
           <option value="{{ name }}" {% if name == theme %}selected="selected"{% endif %}>{{ name }}</option>
           {%- endfor -%}
@@ -203,9 +203,9 @@
       <div class="description">{{ _('Change SearXNG layout') }}</div>
     </fieldset>
     <fieldset>
-      <legend>{{ _('Theme style') }}</legend>
+      <legend id="pref_simple_style">{{ _('Theme style') }}</legend>
       <p class="value">
-        <select name="simple_style">
+        <select name="simple_style" aria-labelledby="pref_simple_style">
           {%- for name in ['auto', 'light', 'dark'] -%}
           <option value="{{ name }}" {% if name == preferences.get_value('simple_style') %}selected="selected"{% endif %}>{{ _(name) }}</option>
           {%- endfor -%}
@@ -216,9 +216,9 @@
     {% endif %}
     {% if 'results_on_new_tab' not in locked_preferences %}
     <fieldset>
-      <legend>{{ _('Results on new tabs') }}</legend>
+      <legend id="pref_results_on_new_tab">{{ _('Results on new tabs') }}</legend>
       <p class="value">
-        <select name='results_on_new_tab'>
+        <select name='results_on_new_tab' aria-labelledby="pref_results_on_new_tab">
           <option value="1" {% if results_on_new_tab %}selected="selected"{% endif %}>{{ _('On') }}</option>
           <option value="0" {% if not results_on_new_tab %}selected="selected"{% endif %}>{{ _('Off')}}</option>
         </select>
@@ -244,9 +244,9 @@
   {{ tab_header('maintab', 'privacy', _('Privacy')) }}
     {% if 'method' not in locked_preferences %}
     <fieldset>
-      <legend>{{ _('HTTP Method') }}</legend>
+      <legend id="pref_method">{{ _('HTTP Method') }}</legend>
       <p class="value">
-        <select name='method'>
+        <select name='method' aria-labelledby="pref_method">
           <option value="POST" {% if method == 'POST' %}selected="selected"{% endif %}>POST</option>
           <option value="GET" {% if method == 'GET' %}selected="selected"{% endif %}>GET</option>
         </select>
@@ -256,9 +256,9 @@
     {% endif %}
     {% if 'image_proxy' not in locked_preferences %}
     <fieldset>
-      <legend>{{ _('Image proxy') }}</legend>
+      <legend id="pref_image_proxy">{{ _('Image proxy') }}</legend>
       <p class="value">
-        <select name='image_proxy'>
+        <select name='image_proxy' aria-labelledby="pref_image_proxy">
           <option value="1" {% if image_proxy %}selected="selected"{% endif %}>{{ _('Enabled') }}</option>
           <option value="" {% if not image_proxy %}selected="selected"{% endif %}>{{ _('Disabled') }}</option>
         </select>
@@ -268,9 +268,9 @@
     {% endif %}
     {% if 'query_in_title' not in locked_preferences %}
     <fieldset>
-      <legend>{{ _("Query in the page's title") }}</legend>
+      <legend id="pref_query_in_title">{{ _("Query in the page's title") }}</legend>
       <p class="value">
-        <select name='query_in_title'>
+        <select name='query_in_title' aria-labelledby="pref_query_in_title">
           <option value="1" {% if query_in_title %}selected="selected"{% endif %}>{{ _('Enabled') }}</option>
           <option value="" {% if not query_in_title %}selected="selected"{% endif %}>{{ _('Disabled') }}</option>
         </select>
diff --git a/searx/templates/simple/results.html b/searx/templates/simple/results.html
index ee47db662..eb45ac742 100644
--- a/searx/templates/simple/results.html
+++ b/searx/templates/simple/results.html
@@ -20,7 +20,7 @@
 
 <div id="results" class="{{ only_template }}">
     {% if answers -%}
-    <div id="answers"><h4 class="title">{{ _('Answers') }} : </h4>
+    <div id="answers" role="complementary" aria-labelledby="answers-title"><h4 class="title" id="answers-title">{{ _('Answers') }} : </h4>
         {%- for answer in answers.values() -%}
         <div class="answer">
               {% if answer.url %}
@@ -64,8 +64,8 @@
         {% endif %}
 
         {% if suggestions %}
-        <div id="suggestions">
-	  <h4 class="title">{{ _('Suggestions') }} : </h4>
+        <div id="suggestions" role="complementary" aria-labelledby="suggestions-title">
+	  <h4 class="title" id="suggestions-title">{{ _('Suggestions') }} : </h4>
 	  <div class="wrapper">
             {% for suggestion in suggestions %}
             <form method="{{ method or 'POST' }}" action="{{ url_for('search') }}">
@@ -75,20 +75,20 @@
               <input type="hidden" name="safesearch" value="{{ safesearch }}">
               <input type="hidden" name="theme" value="{{ theme }}">
               {% if timeout_limit %}<input type="hidden" name="timeout_limit" value="{{ timeout_limit|e }}" >{% endif %}
-              <input type="submit" class="suggestion" value="&bull; {{ suggestion.title }}">
+              <input type="submit" class="suggestion" role="link" value="&bull; {{ suggestion.title }}">
             </form>
             {% endfor %}
 	  </div>
         </div>
         {% endif %}
 
-        <div id="search_url">
-            <h4 class="title">{{ _('Search URL') }} :</h4>
+        <div id="search_url" role="complementary" aria-labelledby="search_url-title">
+            <h4 class="title" id="search_url-title">{{ _('Search URL') }} :</h4>
             <div class="selectable_url"><pre>{{ url_for('search', _external=True) }}?q={{ q|urlencode }}&amp;language={{ current_language }}&amp;time_range={{ time_range }}&amp;safesearch={{ safesearch }}{% if pageno > 1 %}&amp;pageno={{ pageno }}{% endif %}{% if selected_categories %}&amp;categories={{ selected_categories|join(",") | replace(' ','+') }}{% endif %}{% if timeout_limit %}&amp;timeout_limit={{ timeout_limit|urlencode }}{% endif %}</pre></div>
         </div>
-        <div id="apis">
+        <div id="apis" role="complementary" aria-labelledby="apis-title">
           {% if search_formats %}
-          <h4 class="title">{{ _('Download results') }}</h4>
+          <h4 class="title" id="apis-title">{{ _('Download results') }}</h4>
           {% for output_type in search_formats %}
 	  <div class="left">
             <form method="{{ method or 'POST' }}" action="{{ url_for('search') }}">
@@ -102,7 +102,7 @@
               <input type="hidden" name="safesearch" value="{{ safesearch }}">
               <input type="hidden" name="format" value="{{ output_type }}">
               {% if timeout_limit %}<input type="hidden" name="timeout_limit" value="{{ timeout_limit|e }}" >{% endif %}
-              <input type="submit" value="{{ output_type }}">
+              <input type="submit" role="link" value="{{ output_type }}">
             </form>
 	  </div>
           {% endfor %}
@@ -111,8 +111,8 @@
     </div>
 
     {% if corrections %}
-    <div id="corrections">
-      <h4>{{ _('Try searching for:') }}</h4>
+    <div id="corrections" role="complementary" aria-labelledby="corrections-title">
+      <h4 id="corrections-title">{{ _('Try searching for:') }}</h4>
       {% for correction in corrections %}
       <div class="left">
 	<form method="{{ method or 'POST' }}" action="{{ url_for('search') }}" role="navigation">
@@ -122,14 +122,14 @@
           <input type="hidden" name="safesearch" value="{{ safesearch }}">
           <input type="hidden" name="theme" value="{{ theme }}">
           {% if timeout_limit %}<input type="hidden" name="timeout_limit" value="{{ timeout_limit }}" >{% endif %}
-          <input type="submit" value="{{ correction.title }}">
+          <input type="submit" role="link" value="{{ correction.title }}">
 	</form>
       </div>
       {% endfor %}
     </div>
     {% endif %}
 
-    <div id="urls">
+    <div id="urls" role="main">
     {% for result in results %}
         {% if result.open_group and not only_template %}<div class="template_group_{{ result['template']|replace('.html', '') }}">{% endif %}
         {% set index = loop.index %}
@@ -141,10 +141,10 @@
     {% endif %}
     </div>
     <div id="backToTop">
-      <a href="#">{{ icon_small('chevron-up-outline') }}</a>
+      <a href="#" aria-label="{{ _('Back to top') }}">{{ icon_small('chevron-up-outline') }}</a>
     </div>
     {% if paging %}
-    <nav id="pagination">
+    <nav id="pagination" role="navigation">
         {% if pageno > 1 %}
             <form method="{{ method or 'POST' }}" action="{{ url_for('search') }}" class="previous_page">
                 <div class="{% if rtl %}right{% else %}left{% endif %}">
@@ -159,7 +159,7 @@
                   <input type="hidden" name="safesearch" value="{{ safesearch }}" >
                   <input type="hidden" name="theme" value="{{ theme }}" >
                   {% if timeout_limit %}<input type="hidden" name="timeout_limit" value="{{ timeout_limit|e }}" >{% endif %}
-                  <button type="submit">{{ icon_small('chevron-left') }} {{ _('Previous page') }}</button>
+                  <button role="link" type="submit">{{ icon_small('chevron-left') }} {{ _('Previous page') }}</button>
                 </div>
             </form>
         {% endif %}
@@ -176,7 +176,7 @@
               <input type="hidden" name="safesearch" value="{{ safesearch }}" >
               <input type="hidden" name="theme" value="{{ theme }}" >
               {% if timeout_limit %}<input type="hidden" name="timeout_limit" value="{{ timeout_limit|e }}" >{% endif %}
-              <button type="submit">{{ _('Next page') }} {{ icon_small('chevron-right') }}</button>
+              <button role="link"  type="submit">{{ _('Next page') }} {{ icon_small('chevron-right') }}</button>
             </div>
         </form>
     </nav>
diff --git a/searx/templates/simple/search.html b/searx/templates/simple/search.html
index 1df55e782..fb0239ef4 100644
--- a/searx/templates/simple/search.html
+++ b/searx/templates/simple/search.html
@@ -1,13 +1,13 @@
-<form id="search" method="{{ method or 'POST' }}" action="{{ url_for('search') }}">
+<form id="search" method="{{ method or 'POST' }}" action="{{ url_for('search') }}" role="search">
   <div id="search_header">
-    <a id="search_logo" href="{{ url_for('index') }}">
+    <a id="search_logo" href="{{ url_for('index') }}" tabindex="0" title="{{ _('Display the front page') }}">
       <span hidden>SearXNG</span>
       {% include '__common__/searxng-wordmark.min.svg' without context %}
     </a>
     <div class="search_box">
-      <input id="q" autofocus name="q" type="text" placeholder="{{ _('Search for...') }}" tabindex="1" autocomplete="off" spellcheck="false" dir="auto" {% if q %}value="{{ q }}"{% endif %} >
-      <button id="clear_search" type="button" tabindex="-1"><span class="hide_if_nojs">{{ icon_big('close') }}</span><span class="show_if_nojs">{{ _('clear') }}</span></button>
-      <button id="send_search" type="submit" tabindex="-1"><span class="hide_if_nojs">{{ icon_big('search-outline') }}</span><span class="show_if_nojs">{{ _('search') }}</span></button>
+      <input id="q" autofocus name="q" type="text" placeholder="{{ _('Search for...') }}" autocomplete="off" spellcheck="false" dir="auto" {% if q %}value="{{ q }}"{% endif %} >
+      <button id="clear_search" type="button" aria-label="{{ _('clear') }}"><span class="hide_if_nojs">{{ icon_big('close') }}</span><span class="show_if_nojs">{{ _('clear') }}</span></button>
+      <button id="send_search" type="submit" aria-label="{{ _('search') }}"><span class="hide_if_nojs">{{ icon_big('search-outline') }}</span><span class="show_if_nojs">{{ _('search') }}</span></button>
     </div>
     {% set display_tooltip = true %}
     {% include 'simple/categories.html' %}
diff --git a/searx/templates/simple/simple_search.html b/searx/templates/simple/simple_search.html
index 6a5cdd9e7..aa864f282 100644
--- a/searx/templates/simple/simple_search.html
+++ b/searx/templates/simple/simple_search.html
@@ -1,9 +1,9 @@
-<form id="search" method="{{ method or 'POST' }}" action="{{ url_for('search') }}">
+<form id="search" method="{{ method or 'POST' }}" action="{{ url_for('search') }}" role="search">
   <div id="search_header">
     <div class="search_box">
-      <input id="q" autofocus name="q" type="text" placeholder="{{ _('Search for...') }}" tabindex="1" autocomplete="off" spellcheck="false" dir="auto" {% if q %}value="{{ q }}"{% endif %} >
-      <button id="clear_search" type="button" tabindex="-1"><span class="hide_if_nojs">{{ icon_big('close') }}</span><span class="show_if_nojs">{{ _('clear') }}</span></button>
-      <button id="send_search" type="submit" tabindex="-1"><span class="hide_if_nojs">{{ icon_big('search-outline') }}</span><span class="show_if_nojs">{{ _('search') }}</span></button>
+      <input id="q" autofocus name="q" type="text" placeholder="{{ _('Search for...') }}" autocomplete="off" spellcheck="false" dir="auto" {% if q %}value="{{ q }}"{% endif %} >
+      <button id="clear_search" type="button" aria-label="{{ _('clear') }}"><span class="hide_if_nojs">{{ icon_big('close') }}</span><span class="show_if_nojs">{{ _('clear') }}</span></button>
+      <button id="send_search" type="submit" aria-label="{{ _('search') }}"><span class="hide_if_nojs">{{ icon_big('search-outline') }}</span><span class="show_if_nojs">{{ _('search') }}</span></button>
     </div>
   </div>
 </form>
diff --git a/tests/unit/test_webapp.py b/tests/unit/test_webapp.py
index 872b8d014..c29fed0d4 100644
--- a/tests/unit/test_webapp.py
+++ b/tests/unit/test_webapp.py
@@ -194,7 +194,7 @@ class ViewsTestCase(SearxTestCase):
         self.assertIn(
             b'<input type="checkbox" id="checkbox_general" name="category_general" checked="checked"/>', result.data
         )
-        self.assertIn(b'<legend>Interface language</legend>', result.data)
+        self.assertIn(b'<legend id="pref_locale">Interface language</legend>', result.data)
 
     def test_browser_locale(self):
         result = self.app.get('/preferences', headers={'Accept-Language': 'zh-tw;q=0.8'})