diff --git a/searx/plugins/search_on_category_select.py b/searx/plugins/search_on_category_select.py
index 48d537cee..99066e23e 100644
--- a/searx/plugins/search_on_category_select.py
+++ b/searx/plugins/search_on_category_select.py
@@ -22,5 +22,3 @@ description = gettext(
 )
 default_on = True
 preference_section = 'ui'
-
-js_dependencies = ('plugins/js/search_on_category_select.js',)
diff --git a/searx/plugins/vim_hotkeys.py b/searx/plugins/vim_hotkeys.py
index fb61d413b..3eeaf8c00 100644
--- a/searx/plugins/vim_hotkeys.py
+++ b/searx/plugins/vim_hotkeys.py
@@ -8,6 +8,3 @@ description = gettext(
 )
 default_on = False
 preference_section = 'ui'
-
-js_dependencies = ('plugins/js/vim_hotkeys.js',)
-css_dependencies = ('plugins/css/vim_hotkeys.css',)
diff --git a/searx/static/plugins/css/vim_hotkeys.css b/searx/static/plugins/css/vim_hotkeys.css
deleted file mode 100644
index 2ccfdc1af..000000000
--- a/searx/static/plugins/css/vim_hotkeys.css
+++ /dev/null
@@ -1,26 +0,0 @@
-.vim-hotkeys-help {
-    position: fixed;
-    top: 50%;
-    left: 50%;
-    transform: translate(-50%, -50%);
-    z-index: 9999999;
-    overflow-y: auto;
-    max-height: 80%;
-    box-shadow: 0 0 1em;
-}
-
-.dflex {
-    display: -webkit-box;  /* OLD - iOS 6-, Safari 3.1-6 */
-    display: -moz-box;     /* OLD - Firefox 19- (buggy but mostly works) */
-    display: -ms-flexbox;  /* TWEENER - IE 10 */
-    display: -webkit-flex; /* NEW - Chrome */
-    display: flex;         /* NEW, Spec - Opera 12.1, Firefox 20+ */
-}
-
-.iflex {
-    -webkit-box-flex: 1; /* OLD - iOS 6-, Safari 3.1-6 */
-    -moz-box-flex: 1;    /* OLD - Firefox 19- */
-    -webkit-flex: 1;     /* Chrome */
-    -ms-flex: 1;         /* IE 10 */
-    flex: 1;             /* NEW, Spec - Opera 12.1, Firefox 20+ */
-}
diff --git a/searx/static/plugins/js/search_on_category_select.js b/searx/static/plugins/js/search_on_category_select.js
deleted file mode 100644
index d590ed127..000000000
--- a/searx/static/plugins/js/search_on_category_select.js
+++ /dev/null
@@ -1,42 +0,0 @@
-$(document).ready(function() {
-    if($('#q').length) {
-        $('#categories label').click(function(e) {
-            $('#categories input[type="checkbox"]').each(function(i, checkbox) {
-                $(checkbox).prop('checked', false);
-            });
-            $(document.getElementById($(this).attr("for"))).prop('checked', true);
-            if($('#q').val()) {
-                if (getHttpRequest() == "GET") {
-                    $('#search_form').attr('action', $('#search_form').serialize());
-                }
-                $('#search_form').submit();
-            }
-            return false;
-        });
-        $('#time-range').change(function(e) {
-            if($('#q').val()) {
-                if (getHttpRequest() == "GET") {
-                    $('#search_form').attr('action', $('#search_form').serialize());
-                }
-                $('#search_form').submit();
-            }
-        });
-        $('#language').change(function(e) {
-            if($('#q').val()) {
-                if (getHttpRequest() == "GET") {
-                    $('#search_form').attr('action', $('#search_form').serialize());
-                }
-                $('#search_form').submit();
-            }
-        });
-    }
-});
-
-function getHttpRequest() {
-    httpRequest = "POST";
-    urlParams = new URLSearchParams(window.location.search);
-    if (urlParams.has('method')) {
-        httpRequest = urlParams.get('method');
-    }
-    return httpRequest;
-}
diff --git a/searx/static/plugins/js/vim_hotkeys.js b/searx/static/plugins/js/vim_hotkeys.js
deleted file mode 100644
index b0f265cb5..000000000
--- a/searx/static/plugins/js/vim_hotkeys.js
+++ /dev/null
@@ -1,345 +0,0 @@
-$(document).ready(function() {
-    highlightResult('top')();
-
-    $('.result').on('click', function() {
-        highlightResult($(this))();
-    });
-
-    var vimKeys = {
-        27: {
-            key: 'Escape',
-            fun: removeFocus,
-            des: 'remove focus from the focused input',
-            cat: 'Control'
-        },
-        73: {
-            key: 'i',
-            fun: searchInputFocus,
-            des: 'focus on the search input',
-            cat: 'Control'
-        },
-        66: {
-            key: 'b',
-            fun: scrollPage(-window.innerHeight),
-            des: 'scroll one page up',
-            cat: 'Navigation'
-        },
-        70: {
-            key: 'f',
-            fun: scrollPage(window.innerHeight),
-            des: 'scroll one page down',
-            cat: 'Navigation'
-        },
-        85: {
-            key: 'u',
-            fun: scrollPage(-window.innerHeight / 2),
-            des: 'scroll half a page up',
-            cat: 'Navigation'
-        },
-        68: {
-            key: 'd',
-            fun: scrollPage(window.innerHeight / 2),
-            des: 'scroll half a page down',
-            cat: 'Navigation'
-        },
-        71: {
-            key: 'g',
-            fun: scrollPageTo(-document.body.scrollHeight, 'top'),
-            des: 'scroll to the top of the page',
-            cat: 'Navigation'
-        },
-        86: {
-            key: 'v',
-            fun: scrollPageTo(document.body.scrollHeight, 'bottom'),
-            des: 'scroll to the bottom of the page',
-            cat: 'Navigation'
-        },
-        75: {
-            key: 'k',
-            fun: highlightResult('up'),
-            des: 'select previous search result',
-            cat: 'Results'
-        },
-        74: {
-            key: 'j',
-            fun: highlightResult('down'),
-            des: 'select next search result',
-            cat: 'Results'
-        },
-        80: {
-            key: 'p',
-            fun: pageButtonClick(0),
-            des: 'go to previous page',
-            cat: 'Results'
-        },
-        78: {
-            key: 'n',
-            fun: pageButtonClick(1),
-            des: 'go to next page',
-            cat: 'Results'
-        },
-        79: {
-            key: 'o',
-            fun: openResult(false),
-            des: 'open search result',
-            cat: 'Results'
-        },
-        84: {
-            key: 't',
-            fun: openResult(true),
-            des: 'open the result in a new tab',
-            cat: 'Results'
-        },
-        82: {
-            key: 'r',
-            fun: reloadPage,
-            des: 'reload page from the server',
-            cat: 'Control'
-        },
-        72: {
-            key: 'h',
-            fun: toggleHelp,
-            des: 'toggle help window',
-            cat: 'Other'
-        }
-    };
-
-    $(document).keydown(function(e) {
-        // check for modifiers so we don't break browser's hotkeys
-        if (vimKeys.hasOwnProperty(e.keyCode)
-            && !e.ctrlKey
-            && !e.altKey
-            && !e.shiftKey
-            && !e.metaKey)
-        {
-            if (e.keyCode === 27) {
-                if (e.target.tagName.toLowerCase() === 'input') {
-                    vimKeys[e.keyCode].fun();
-                }
-            } else {
-                if (e.target === document.body) {
-                    e.preventDefault();
-                    vimKeys[e.keyCode].fun();
-                }
-            }
-        }
-    });
-
-    function nextResult(current, direction) {
-        var next = current[direction]();
-        while (!next.is('.result') && next.length !== 0) {
-            next = next[direction]();
-        }
-        return next
-    }
-
-    function highlightResult(which) {
-        return function() {
-            var current = $('.result[data-vim-selected]');
-            if (current.length === 0) {
-                current = $('.result:first');
-                if (current.length === 0) {
-                    return;
-                }
-            }
-
-            var next;
-
-            if (typeof which !== 'string') {
-                next = which;
-            } else {
-                switch (which) {
-                    case 'visible':
-                        var top = $(window).scrollTop();
-                        var bot = top + $(window).height();
-                        var results = $('.result');
-
-                        for (var i = 0; i < results.length; i++) {
-                            next = $(results[i]);
-                            var etop = next.offset().top;
-                            var ebot = etop + next.height();
-
-                            if ((ebot <= bot) && (etop > top)) {
-                                break;
-                            }
-                        }
-                        break;
-                    case 'down':
-                        next = nextResult(current, 'next');
-                        if (next.length === 0) {
-                            next = $('.result:first');
-                        }
-                        break;
-                    case 'up':
-                        next = nextResult(current, 'prev');
-                        if (next.length === 0) {
-                            next = $('.result:last');
-                        }
-                        break;
-                    case 'bottom':
-                        next = $('.result:last');
-                        break;
-                    case 'top':
-                    default:
-                        next = $('.result:first');
-                }
-            }
-
-            if (next) {
-                current.removeAttr('data-vim-selected').removeClass('well well-sm');
-                next.attr('data-vim-selected', 'true').addClass('well well-sm');
-                scrollPageToSelected();
-            }
-        }
-    }
-
-    function reloadPage() {
-        document.location.reload(false);
-    }
-
-    function removeFocus() {
-        if (document.activeElement) {
-            document.activeElement.blur();
-        }
-    }
-
-    function pageButtonClick(num) {
-        return function() {
-            var buttons = $('div#pagination button[type="submit"]');
-            if (buttons.length !== 2) {
-                console.log('page navigation with this theme is not supported');
-                return;
-            }
-            if (num >= 0 && num < buttons.length) {
-                buttons[num].click();
-            } else {
-                console.log('pageButtonClick(): invalid argument');
-            }
-        }
-    }
-
-    function scrollPageToSelected() {
-        var sel = $('.result[data-vim-selected]');
-        if (sel.length !== 1) {
-            return;
-        }
-
-        var wnd = $(window);
-
-        var wtop = wnd.scrollTop();
-        var etop = sel.offset().top;
-
-        var offset = 30;
-
-        if (wtop > etop) {
-            wnd.scrollTop(etop - offset);
-        } else  {
-            var ebot = etop + sel.height();
-            var wbot = wtop + wnd.height();
-
-            if (wbot < ebot) {
-                wnd.scrollTop(ebot - wnd.height() + offset);
-            }
-        }
-    }
-
-    function scrollPage(amount) {
-        return function() {
-            window.scrollBy(0, amount);
-            highlightResult('visible')();
-        }
-    }
-
-    function scrollPageTo(position, nav) {
-        return function() {
-            window.scrollTo(0, position);
-            highlightResult(nav)();
-        }
-    }
-
-    function searchInputFocus() {
-        $('input#q').focus();
-    }
-
-    function openResult(newTab) {
-        return function() {
-            var link = $('.result[data-vim-selected] .result_header a');
-            if (link.length) {
-                var url = link.attr('href');
-                if (newTab) {
-                    window.open(url);
-                } else {
-                    window.location.href = url;
-                }
-            }
-        };
-    }
-
-    function toggleHelp() {
-        var helpPanel = $('#vim-hotkeys-help');
-        if (helpPanel.length) {
-            helpPanel.toggleClass('hidden');
-            return;
-        }
-
-        var categories = {};
-
-        for (var k in vimKeys) {
-            var key = vimKeys[k];
-            categories[key.cat] = categories[key.cat] || [];
-            categories[key.cat].push(key);
-        }
-
-        var sorted = Object.keys(categories).sort(function(a, b) {
-            return categories[b].length - categories[a].length;
-        });
-
-        if (sorted.length === 0) {
-            return;
-        }
-
-        var html = '<div id="vim-hotkeys-help" class="well vim-hotkeys-help">';
-        html += '<div class="container-fluid">';
-
-        html += '<div class="row">';
-        html += '<div class="col-sm-12">';
-        html += '<h3>How to navigate searx with Vim-like hotkeys</h3>';
-        html += '</div>'; // col-sm-12
-        html += '</div>'; // row
-
-        for (var i = 0; i < sorted.length; i++) {
-            var cat = categories[sorted[i]];
-
-            var lastCategory = i === (sorted.length - 1);
-            var first = i % 2 === 0;
-
-            if (first) {
-                html += '<div class="row dflex">';
-            }
-            html += '<div class="col-sm-' + (first && lastCategory ? 12 : 6) + ' dflex">';
-
-            html += '<div class="panel panel-default iflex">';
-            html += '<div class="panel-heading">' + cat[0].cat + '</div>';
-            html += '<div class="panel-body">';
-            html += '<ul class="list-unstyled">';
-
-            for (var cj in cat) {
-                html += '<li><kbd>' + cat[cj].key + '</kbd> ' + cat[cj].des + '</li>';
-            }
-
-            html += '</ul>';
-            html += '</div>'; // panel-body
-            html += '</div>'; // panel
-            html += '</div>'; // col-sm-*
-
-            if (!first || lastCategory) {
-                html += '</div>'; // row
-            }
-        }
-
-        html += '</div>'; // container-fluid
-        html += '</div>'; // vim-hotkeys-help
-
-        $('body').append(html);
-    }
-});
diff --git a/searx/static/themes/__common__/less/new_issue.less b/searx/static/themes/__common__/less/new_issue.less
deleted file mode 100644
index 175bd3cec..000000000
--- a/searx/static/themes/__common__/less/new_issue.less
+++ /dev/null
@@ -1,19 +0,0 @@
-.github-issue-button {
-    display: block;
-    padding: 8px 16px;
-    font-family: sans-serif;
-    font-size: 16px;
-    color: white;
-    background-color: #238636 !important; /* important is needed cause to an !important in logicodev-dark */
-    border: #2ea043;
-    border-radius: 10px !important;
-    box-shadow: rgba(0, 0, 0, 0) 0px 0px 0px 0px;
-}
-
-.github-issue-button:hover {
-    background-color: #2ea043;
-}
-
-.issue-hide {
-    display: none;
-}
diff --git a/searx/static/themes/__common__/less/result_templates.less b/searx/static/themes/__common__/less/result_templates.less
deleted file mode 100644
index d67aecae4..000000000
--- a/searx/static/themes/__common__/less/result_templates.less
+++ /dev/null
@@ -1,5 +0,0 @@
-.osm-map-box {
-    height:300px;
-    width:100%;
-    margin: 10px 0;
-}
diff --git a/searx/static/themes/__common__/less/stats.less b/searx/static/themes/__common__/less/stats.less
deleted file mode 100644
index 687d15906..000000000
--- a/searx/static/themes/__common__/less/stats.less
+++ /dev/null
@@ -1,83 +0,0 @@
-.engine-stats {
-
-    .engine-name {
-        width: 20rem;
-    }
-
-    .engine-score {
-        width: 7rem;
-        text-align: right;
-    }
-
-    .result-count {
-    }
-
-    .response-time {
-    }
-
-    .engine-reliability {
-        text-align: right;
-    }
-
-    table.engine-error {
-        max-width: 1280px;
-        margin: 1rem;
-        border: 1px solid gray;
-    }
-
-    table.engine-error th.engine-error-type,
-    table.engine-error td.engine-error-type,
-    failed-test {
-        width: 10rem;
-    }
-
-    table.engine-error span.log_parameters
-    {
-        border-right: 1px solid gray;
-        padding: 0 1rem 0 0;
-        margin: 0 0 0 0.5rem;
-    }
-}
-
-.bar-chart-value {
-    width: 3em;
-    display: inline-block;
-    text-align: right;
-    padding-right: 0.5rem;
-}
-
-.bar-chart-graph {
-    width: calc(100% - 5rem);
-    display: inline-block;
-}
-
-.bar-chart-bar {
-    border: 3px solid #5bc0de;
-    margin: 1px 0;
-}
-
-.bar-chart-serie1 {
-    border: 3px solid #5bc0de;
-    margin: 1px 0;
-    float: left;
-}
-
-.bar-chart-serie2 {
-    border: 3px solid #deb15b;
-    margin: 1px 0;
-    float: left;
-}
-
-.bar0{
-    width: 0;
-    border: 0;
-}
-
-.generate-bar(100);
-
-.generate-bar(@n, @i: 1) when (@i =< @n) {
-    .bar@{i} {
-        width: (@i * 100% / @n);
-    }
-    .generate-bar(@n, (@i + 1));
-}
diff --git a/searx/static/themes/.gitattributes b/searx/static/themes/simple/.gitattributes
similarity index 100%
rename from searx/static/themes/.gitattributes
rename to searx/static/themes/simple/.gitattributes
diff --git a/searx/static/themes/simple/gruntfile.js b/searx/static/themes/simple/gruntfile.js
index 25883e384..50ea3b1d4 100644
--- a/searx/static/themes/simple/gruntfile.js
+++ b/searx/static/themes/simple/gruntfile.js
@@ -44,7 +44,6 @@ module.exports = function (grunt) {
         'svg4web.svgo.js',
         'src/js/main/*.js',
         'src/js/head/*.js',
-        '../__common__/js/*.js'
       ],
     },
     stylelint: {
@@ -146,7 +145,7 @@ module.exports = function (grunt) {
           svgo: ['--config', 'svg4web.svgo.js']
         },
         files: {
-          '<%= _templates %>/__common__/searxng-wordmark.min.svg': '<%= _brand %>/searxng-wordmark.svg',
+          '<%= _templates %>/simple/searxng-wordmark.min.svg': '<%= _brand %>/searxng-wordmark.svg',
           'img/searxng.svg': '<%= _brand %>/searxng.svg',
           'img/img_load_error.svg': '<%= _brand %>/img_load_error.svg'
         }
diff --git a/searx/static/themes/simple/src/less/new_issue.less b/searx/static/themes/simple/src/less/new_issue.less
new file mode 100644
index 000000000..83d53b5e3
--- /dev/null
+++ b/searx/static/themes/simple/src/less/new_issue.less
@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+.github-issue-button {
+  display: block;
+  padding: 8px 16px;
+  font-family: sans-serif;
+  font-size: 16px;
+  color: white;
+  background-color: #238636;
+  border: #2ea043;
+  border-radius: 10px !important;
+  box-shadow: rgba(0, 0, 0, 0) 0 0 0 0;
+}
+
+.github-issue-button:hover {
+  background-color: #2ea043;
+}
+
+.issue-hide {
+  display: none;
+}
diff --git a/searx/static/themes/simple/src/less/result_templates.less b/searx/static/themes/simple/src/less/result_templates.less
new file mode 100644
index 000000000..afabdf322
--- /dev/null
+++ b/searx/static/themes/simple/src/less/result_templates.less
@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+.osm-map-box {
+  height: 300px;
+  width: 100%;
+  margin: 10px 0;
+}
diff --git a/searx/static/themes/simple/src/less/stats.less b/searx/static/themes/simple/src/less/stats.less
new file mode 100644
index 000000000..0e54e270c
--- /dev/null
+++ b/searx/static/themes/simple/src/less/stats.less
@@ -0,0 +1,77 @@
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+.engine-stats {
+  .engine-name {
+    width: 20rem;
+  }
+
+  .engine-score {
+    width: 7rem;
+    text-align: right;
+  }
+
+  .engine-reliability {
+    text-align: right;
+  }
+
+  table.engine-error {
+    max-width: 1280px;
+    margin: 1rem;
+    border: 1px solid gray;
+  }
+
+  table.engine-error th.engine-error-type,
+  table.engine-error td.engine-error-type,
+  failed-test {
+    width: 10rem;
+  }
+
+  table.engine-error span.log_parameters {
+    border-right: 1px solid gray;
+    padding: 0 1rem 0 0;
+    margin: 0 0 0 0.5rem;
+  }
+}
+
+.bar-chart-value {
+  width: 3em;
+  display: inline-block;
+  text-align: right;
+  padding-right: 0.5rem;
+}
+
+.bar-chart-graph {
+  width: calc(100% - 5rem);
+  display: inline-block;
+}
+
+.bar-chart-bar {
+  border: 3px solid #5bc0de;
+  margin: 1px 0;
+}
+
+.bar-chart-serie1 {
+  border: 3px solid #5bc0de;
+  margin: 1px 0;
+  float: left;
+}
+
+.bar-chart-serie2 {
+  border: 3px solid #deb15b;
+  margin: 1px 0;
+  float: left;
+}
+
+.bar0 {
+  width: 0;
+  border: 0;
+}
+
+.generate-bar(100);
+
+.generate-bar(@n, @i: 1) when (@i =< @n) {
+  .bar@{i} {
+    width: (@i * 100% / @n);
+  }
+  .generate-bar(@n, (@i + 1));
+}
diff --git a/searx/static/themes/simple/src/less/style-rtl.less b/searx/static/themes/simple/src/less/style-rtl.less
index bbaa48748..cf105702b 100644
--- a/searx/static/themes/simple/src/less/style-rtl.less
+++ b/searx/static/themes/simple/src/less/style-rtl.less
@@ -124,7 +124,7 @@
   background-position-x: 100%;
 }
 
-// patch of searx/static/themes/__common__/less/stats.less
+// patch of stats.less
 .bar-chart-serie1,
 .bar-chart-serie2 {
   float: right;
diff --git a/searx/static/themes/simple/src/less/style.less b/searx/static/themes/simple/src/less/style.less
index 258c222a2..38fdeaa14 100644
--- a/searx/static/themes/simple/src/less/style.less
+++ b/searx/static/themes/simple/src/less/style.less
@@ -6,9 +6,6 @@
 
 // stylelint-disable no-descending-specificity
 
-@import "../../__common__/less/new_issue.less";
-@import "../../__common__/less/stats.less";
-@import "../../__common__/less/result_templates.less";
 @import (inline) "../../node_modules/normalize.css/normalize.css";
 @import "definitions.less";
 @import "mixins.less";
@@ -19,6 +16,9 @@
 @import "animations.less";
 @import "embedded.less";
 @import "info.less";
+@import "new_issue.less";
+@import "stats.less";
+@import "result_templates.less";
 
 // for index.html template
 @import "index.less";
diff --git a/searx/templates/__common__/new_issue.html b/searx/templates/simple/new_issue.html
similarity index 100%
rename from searx/templates/__common__/new_issue.html
rename to searx/templates/simple/new_issue.html
diff --git a/searx/templates/__common__/opensearch.xml b/searx/templates/simple/opensearch.xml
similarity index 100%
rename from searx/templates/__common__/opensearch.xml
rename to searx/templates/simple/opensearch.xml
diff --git a/searx/templates/__common__/opensearch_response_rss.xml b/searx/templates/simple/opensearch_response_rss.xml
similarity index 100%
rename from searx/templates/__common__/opensearch_response_rss.xml
rename to searx/templates/simple/opensearch_response_rss.xml
diff --git a/searx/templates/simple/search.html b/searx/templates/simple/search.html
index 90a296aeb..c5f7de09c 100644
--- a/searx/templates/simple/search.html
+++ b/searx/templates/simple/search.html
@@ -2,7 +2,7 @@
   <div id="search_header">
     <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 %}
+      {% include 'simple/searxng-wordmark.min.svg' without context %}
     </a>
     <div id="search_view">
       <div class="search_box">
diff --git a/searx/templates/__common__/searxng-wordmark.min.svg b/searx/templates/simple/searxng-wordmark.min.svg
similarity index 100%
rename from searx/templates/__common__/searxng-wordmark.min.svg
rename to searx/templates/simple/searxng-wordmark.min.svg
diff --git a/searx/templates/simple/stats.html b/searx/templates/simple/stats.html
index f45f5b260..9cc035cfd 100644
--- a/searx/templates/simple/stats.html
+++ b/searx/templates/simple/stats.html
@@ -1,5 +1,5 @@
 {% from 'simple/icons.html' import icon_big %}
-{% from '__common__/new_issue.html' import new_issue with context %}
+{% from 'simple/new_issue.html' import new_issue with context %}
 
 {% extends "simple/page_with_header.html" %}
 
diff --git a/searx/webapp.py b/searx/webapp.py
index de01e2863..940496483 100755
--- a/searx/webapp.py
+++ b/searx/webapp.py
@@ -17,7 +17,7 @@ from timeit import default_timer
 from html import escape
 from io import StringIO
 import typing
-from typing import List, Dict, Iterable, Optional
+from typing import List, Dict, Iterable
 
 import urllib
 import urllib.parse
@@ -140,12 +140,6 @@ default_theme = settings['ui']['default_theme']
 templates_path = settings['ui']['templates_path']
 themes = get_themes(templates_path)
 result_templates = get_result_templates(templates_path)
-global_favicons = []
-for indice, theme in enumerate(themes):
-    global_favicons.append([])
-    theme_img_path = os.path.join(settings['ui']['static_path'], 'themes', theme, 'img', 'icons')
-    for (dirpath, dirnames, filenames) in os.walk(theme_img_path):
-        global_favicons[indice].extend(filenames)
 
 STATS_SORT_PARAMETERS = {
     'name': (False, 'name', ''),
@@ -327,24 +321,6 @@ def code_highlighter(codelines, language=None):
     return html_code
 
 
-def get_current_theme_name(override: Optional[str] = None) -> str:
-    """Returns theme name.
-
-    Checks in this order:
-    1. override
-    2. cookies
-    3. settings"""
-
-    if override and (override in themes or override == '__common__'):
-        return override
-    theme_name = request.args.get('theme', request.preferences.get_value('theme'))
-
-    if theme_name and theme_name in themes:
-        return theme_name
-
-    return default_theme
-
-
 def get_result_template(theme_name: str, template_name: str):
     themed_path = theme_name + '/result_templates/' + template_name
     if themed_path in result_templates:
@@ -352,13 +328,13 @@ def get_result_template(theme_name: str, template_name: str):
     return 'result_templates/' + template_name
 
 
-def custom_url_for(endpoint: str, override_theme: Optional[str] = None, **values):
+def custom_url_for(endpoint: str, **values):
     suffix = ""
     if endpoint == 'static' and values.get('filename'):
         file_hash = static_files.get(values['filename'])
         if not file_hash:
             # try file in the current theme
-            theme_name = get_current_theme_name(override=override_theme)
+            theme_name = request.preferences.get_value('theme')
             filename_with_theme = "themes/{}/{}".format(theme_name, values['filename'])
             file_hash = static_files.get(filename_with_theme)
             if file_hash:
@@ -459,7 +435,7 @@ def get_client_settings():
     }
 
 
-def render(template_name: str, override_theme: str = None, **kwargs):
+def render(template_name: str, **kwargs):
 
     kwargs['client_settings'] = str(
         base64.b64encode(
@@ -471,12 +447,6 @@ def render(template_name: str, override_theme: str = None, **kwargs):
         encoding='utf-8',
     )
 
-    # obsolete, only needed by oscar
-    kwargs['autocomplete'] = request.preferences.get_value('autocomplete')
-    kwargs['method'] = request.preferences.get_value('method')
-    kwargs['infinite_scroll'] = request.preferences.get_value('infinite_scroll')
-    kwargs['translations'] = json.dumps(get_translations(), separators=(',', ':'))
-
     # values from the HTTP requests
     kwargs['endpoint'] = 'results' if 'q' in kwargs else request.endpoint
     kwargs['cookies'] = request.cookies
@@ -488,7 +458,7 @@ def render(template_name: str, override_theme: str = None, **kwargs):
     kwargs['advanced_search'] = request.preferences.get_value('advanced_search')
     kwargs['query_in_title'] = request.preferences.get_value('query_in_title')
     kwargs['safesearch'] = str(request.preferences.get_value('safesearch'))
-    kwargs['theme'] = get_current_theme_name(override=override_theme)
+    kwargs['theme'] = request.preferences.get_value('theme')
     kwargs['categories_as_tabs'] = list(settings['categories_as_tabs'].keys())
     kwargs['categories'] = _get_enable_categories(categories.keys())
     kwargs['OTHER_CATEGORY'] = OTHER_CATEGORY
@@ -521,7 +491,14 @@ def render(template_name: str, override_theme: str = None, **kwargs):
     kwargs['proxify_results'] = settings.get('result_proxy', {}).get('proxify_results', True)
     kwargs['get_result_template'] = get_result_template
     kwargs['opensearch_url'] = (
-        url_for('opensearch') + '?' + urlencode({'method': kwargs['method'], 'autocomplete': kwargs['autocomplete']})
+        url_for('opensearch')
+        + '?'
+        + urlencode(
+            {
+                'method': request.preferences.get_value('method'),
+                'autocomplete': request.preferences.get_value('autocomplete'),
+            }
+        )
     )
 
     # scripts from plugins
@@ -648,7 +625,6 @@ def index_error(output_format: str, error_message: str):
             q=request.form['q'] if 'q' in request.form else '',
             number_of_results=0,
             error_message=error_message,
-            override_theme='__common__',
         )
         return Response(response_rss, mimetype='text/xml')
 
@@ -841,7 +817,6 @@ def search():
             suggestions=result_container.suggestions,
             q=request.form['q'],
             number_of_results=number_of_results,
-            override_theme='__common__',
         )
         return Response(response_rss, mimetype='text/xml')
 
@@ -886,8 +861,6 @@ def search():
             settings['search']['languages'],
             fallback=request.preferences.get_value("language")
         ),
-        theme = get_current_theme_name(),
-        favicons = global_favicons[themes.index(get_current_theme_name())],
         timeout_limit = request.form.get('timeout_limit', None)
         # fmt: on
     )
@@ -984,8 +957,7 @@ def autocompleter():
         suggestions = json.dumps([sug_prefix, results])
         mimetype = 'application/x-suggestions+json'
 
-    if get_current_theme_name() == 'simple':
-        suggestions = escape(suggestions, False)
+    suggestions = escape(suggestions, False)
     return Response(suggestions, mimetype=mimetype)
 
 
@@ -1132,7 +1104,6 @@ def preferences():
         doi_resolvers = settings['doi_resolvers'],
         current_doi_resolver = get_doi_resolver(request.preferences),
         allowed_plugins = allowed_plugins,
-        theme = get_current_theme_name(),
         preferences_url_params = request.preferences.get_as_url_params(),
         locked_preferences = settings['preferences']['lock'],
         preferences = True
@@ -1334,7 +1305,9 @@ def opensearch():
     if request.headers.get('User-Agent', '').lower().find('webkit') >= 0:
         method = 'get'
 
-    ret = render('opensearch.xml', opensearch_method=method, override_theme='__common__')
+    autocomplete = request.preferences.get_value('autocomplete')
+
+    ret = render('opensearch.xml', opensearch_method=method, autocomplete=autocomplete)
 
     resp = Response(response=ret, status=200, mimetype="application/opensearchdescription+xml")
     return resp
@@ -1342,8 +1315,9 @@ def opensearch():
 
 @app.route('/favicon.ico')
 def favicon():
+    theme = request.preferences.get_value("theme")
     return send_from_directory(
-        os.path.join(app.root_path, settings['ui']['static_path'], 'themes', get_current_theme_name(), 'img'),
+        os.path.join(app.root_path, settings['ui']['static_path'], 'themes', theme, 'img'),
         'favicon.png',
         mimetype='image/vnd.microsoft.icon',
     )
diff --git a/searx/webutils.py b/searx/webutils.py
index 5be721eec..b18fd5c6a 100644
--- a/searx/webutils.py
+++ b/searx/webutils.py
@@ -53,10 +53,7 @@ class UnicodeWriter:
 
 def get_themes(templates_path):
     """Returns available themes list."""
-    themes = os.listdir(templates_path)
-    if '__common__' in themes:
-        themes.remove('__common__')
-    return themes
+    return os.listdir(templates_path)
 
 
 def get_hash_for_file(file: pathlib.Path) -> str:
diff --git a/tests/unit/test_webapp.py b/tests/unit/test_webapp.py
index bb09e591e..558cc6bb3 100644
--- a/tests/unit/test_webapp.py
+++ b/tests/unit/test_webapp.py
@@ -7,6 +7,7 @@ from searx.results import Timing
 
 import searx.search.processors
 from searx.search import Search
+from searx.preferences import Preferences
 from tests import SearxTestCase
 
 
@@ -77,12 +78,14 @@ class ViewsTestCase(SearxTestCase):
 
         self.setattr4test(Search, 'search', search_mock)
 
-        def get_current_theme_name_mock(override=None):
-            if override:
-                return override
-            return 'simple'
+        original_preferences_get_value = Preferences.get_value
 
-        self.setattr4test(webapp, 'get_current_theme_name', get_current_theme_name_mock)
+        def preferences_get_value(preferences_self, user_setting_name: str):
+            if user_setting_name == 'theme':
+                return 'simple'
+            return original_preferences_get_value(preferences_self, user_setting_name)
+
+        self.setattr4test(Preferences, 'get_value', preferences_get_value)
 
         self.maxDiff = None  # to see full diffs
 
diff --git a/utils/lib_static.sh b/utils/lib_static.sh
index c8a379fb3..754531700 100755
--- a/utils/lib_static.sh
+++ b/utils/lib_static.sh
@@ -8,7 +8,7 @@ STATIC_BUILT_PATHS=(
     'searx/static/themes/simple/js'
     'searx/static/themes/simple/src/generated/pygments.less'
     'searx/static/themes/simple/img'
-    'searx/templates/__common__/searxng-wordmark.min.svg'
+    'searx/templates/simple/searxng-wordmark.min.svg'
     'searx/templates/simple/icons.html'
 )