diff --git a/searx/static/themes/oscar/js/searx.js b/searx/static/themes/oscar/js/searx.js
index 9138576f5..c6feda50c 100644
--- a/searx/static/themes/oscar/js/searx.js
+++ b/searx/static/themes/oscar/js/searx.js
@@ -357,3 +357,13 @@ $(document).ready(function(){
         $( this ).off( event );
     });
 });
+;$(document).ready(function(){
+    $("#allow-all-engines").click(function() {
+        $(".onoffswitch-checkbox").each(function() { this.checked = false;});
+    });
+
+    $("#disable-all-engines").click(function() {
+        $(".onoffswitch-checkbox").each(function() { this.checked = true;});
+    });
+});
+
diff --git a/searx/static/themes/oscar/js/searx.min.js b/searx/static/themes/oscar/js/searx.min.js
index 4c01dca94..9c3e13b59 100644
--- a/searx/static/themes/oscar/js/searx.min.js
+++ b/searx/static/themes/oscar/js/searx.min.js
@@ -1,2 +1,2 @@
-/*! oscar/searx.min.js | 23-03-2020 | https://github.com/asciimoo/searx */
-requirejs.config({baseUrl:"./static/themes/oscar/js",paths:{app:"../app"}}),window.searx=function(a){"use strict";var b=a.currentScript||function(){var b=a.getElementsByTagName("script");return b[b.length-1]}();return{autocompleter:"true"===b.getAttribute("data-autocompleter"),method:b.getAttribute("data-method")}}(document),searx.autocompleter&&(searx.searchResults=new Bloodhound({datumTokenizer:Bloodhound.tokenizers.obj.whitespace("value"),queryTokenizer:Bloodhound.tokenizers.whitespace,remote:"./autocompleter?q=%QUERY"}),searx.searchResults.initialize()),$(document).ready(function(){searx.autocompleter&&($("#q").typeahead(null,{name:"search-results",displayKey:function(a){return a},source:searx.searchResults.ttAdapter()}),$("#q").bind("typeahead:selected",function(a,b){$("#search_form").submit()}))}),$(document).ready(function(){$("#q.autofocus").focus(),$(".select-all-on-click").click(function(){$(this).select()}),$(".btn-collapse").click(function(){var a=$(this).data("btn-text-collapsed"),b=$(this).data("btn-text-not-collapsed");""!==a&&""!==b&&($(this).hasClass("collapsed")?new_html=$(this).html().replace(a,b):new_html=$(this).html().replace(b,a),$(this).html(new_html))}),$(".btn-toggle .btn").click(function(){var a="btn-"+$(this).data("btn-class"),b=$(this).data("btn-label-default"),c=$(this).data("btn-label-toggled");""!==c&&($(this).hasClass("btn-default")?new_html=$(this).html().replace(b,c):new_html=$(this).html().replace(c,b),$(this).html(new_html)),$(this).toggleClass(a),$(this).toggleClass("btn-default")}),$(".media-loader").click(function(){var a=$(this).data("target"),b=$(a+" > iframe"),c=b.attr("src");void 0!==c&&c!==!1||b.attr("src",b.data("src"))}),$(".btn-sm").dblclick(function(){var a="btn-"+$(this).data("btn-class");$(this).hasClass("btn-default")?($(".btn-sm > input").attr("checked","checked"),$(".btn-sm > input").prop("checked",!0),$(".btn-sm").addClass(a),$(".btn-sm").addClass("active"),$(".btn-sm").removeClass("btn-default")):($(".btn-sm > input").attr("checked",""),$(".btn-sm > input").removeAttr("checked"),$(".btn-sm > input").checked=!1,$(".btn-sm").removeClass(a),$(".btn-sm").removeClass("active"),$(".btn-sm").addClass("btn-default"))})}),$(document).ready(function(){$(".searx_overpass_request").on("click",function(a){var b="https://overpass-api.de/api/interpreter?data=",c=b+"[out:json][timeout:25];(",d=");out meta;",e=$(this).data("osm-id"),f=$(this).data("osm-type"),g=$(this).data("result-table"),h="#"+$(this).data("result-table-loadicon"),i=["addr:city","addr:country","addr:housenumber","addr:postcode","addr:street"];if(e&&f&&g){g="#"+g;var j=null;switch(f){case"node":j=c+"node("+e+");"+d;break;case"way":j=c+"way("+e+");"+d;break;case"relation":j=c+"relation("+e+");"+d}if(j){$.ajax(j).done(function(a){if(a&&a.elements&&a.elements[0]){var b=a.elements[0],c=$(g).html();for(var d in b.tags)if(null===b.tags.name||i.indexOf(d)==-1){switch(c+="<tr><td>"+d+"</td><td>",d){case"phone":case"fax":c+='<a href="tel:'+b.tags[d].replace(/ /g,"")+'">'+b.tags[d]+"</a>";break;case"email":c+='<a href="mailto:'+b.tags[d]+'">'+b.tags[d]+"</a>";break;case"website":case"url":c+='<a href="'+b.tags[d]+'">'+b.tags[d]+"</a>";break;case"wikidata":c+='<a href="https://www.wikidata.org/wiki/'+b.tags[d]+'">'+b.tags[d]+"</a>";break;case"wikipedia":if(b.tags[d].indexOf(":")!=-1){c+='<a href="https://'+b.tags[d].substring(0,b.tags[d].indexOf(":"))+".wikipedia.org/wiki/"+b.tags[d].substring(b.tags[d].indexOf(":")+1)+'">'+b.tags[d]+"</a>";break}default:c+=b.tags[d]}c+="</td></tr>"}$(g).html(c),$(g).removeClass("hidden"),$(h).addClass("hidden")}}).fail(function(){$(h).html($(h).html()+'<p class="text-muted">could not load data!</p>')})}}$(this).off(a)}),$(".searx_init_map").on("click",function(a){var b=$(this).data("leaflet-target"),c=$(this).data("map-lon"),d=$(this).data("map-lat"),e=$(this).data("map-zoom"),f=$(this).data("map-boundingbox"),g=$(this).data("map-geojson");require(["leaflet-0.7.3.min"],function(a){f&&(southWest=L.latLng(f[0],f[2]),northEast=L.latLng(f[1],f[3]),map_bounds=L.latLngBounds(southWest,northEast)),L.Icon.Default.imagePath="./static/themes/oscar/img/map";var h=L.map(b),i="https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png",j='Map data © <a href="https://openstreetmap.org">OpenStreetMap</a> contributors',k=new L.TileLayer(i,{minZoom:1,maxZoom:19,attribution:j}),l="https://maps.wikimedia.org/osm-intl/{z}/{x}/{y}.png",m='Wikimedia maps beta | Maps data © <a href="https://openstreetmap.org">OpenStreetMap</a> contributors';new L.TileLayer(l,{minZoom:1,maxZoom:19,attribution:m});map_bounds?setTimeout(function(){h.fitBounds(map_bounds,{maxZoom:17})},0):c&&d&&(e?h.setView(new L.LatLng(d,c),e):h.setView(new L.LatLng(d,c),8)),h.addLayer(k);var n={"OSM Mapnik":k};L.control.layers(n).addTo(h),g&&L.geoJson(g).addTo(h)}),$(this).off(a)})});
\ No newline at end of file
+/*! oscar/searx.min.js | 31-05-2020 |   */
+requirejs.config({baseUrl:"./static/themes/oscar/js",paths:{app:"../app"}}),window.searx=function(a){"use strict";var b=a.currentScript||function(){var b=a.getElementsByTagName("script");return b[b.length-1]}();return{autocompleter:"true"===b.getAttribute("data-autocompleter"),method:b.getAttribute("data-method")}}(document),searx.autocompleter&&(searx.searchResults=new Bloodhound({datumTokenizer:Bloodhound.tokenizers.obj.whitespace("value"),queryTokenizer:Bloodhound.tokenizers.whitespace,remote:"./autocompleter?q=%QUERY"}),searx.searchResults.initialize()),$(document).ready(function(){searx.autocompleter&&($("#q").typeahead(null,{name:"search-results",displayKey:function(a){return a},source:searx.searchResults.ttAdapter()}),$("#q").bind("typeahead:selected",function(a,b){$("#search_form").submit()}))}),$(document).ready(function(){$("#q.autofocus").focus(),$(".select-all-on-click").click(function(){$(this).select()}),$(".btn-collapse").click(function(){var a=$(this).data("btn-text-collapsed"),b=$(this).data("btn-text-not-collapsed");""!==a&&""!==b&&($(this).hasClass("collapsed")?new_html=$(this).html().replace(a,b):new_html=$(this).html().replace(b,a),$(this).html(new_html))}),$(".btn-toggle .btn").click(function(){var a="btn-"+$(this).data("btn-class"),b=$(this).data("btn-label-default"),c=$(this).data("btn-label-toggled");""!==c&&($(this).hasClass("btn-default")?new_html=$(this).html().replace(b,c):new_html=$(this).html().replace(c,b),$(this).html(new_html)),$(this).toggleClass(a),$(this).toggleClass("btn-default")}),$(".media-loader").click(function(){var a=$(this).data("target"),b=$(a+" > iframe"),c=b.attr("src");void 0!==c&&c!==!1||b.attr("src",b.data("src"))}),$(".btn-sm").dblclick(function(){var a="btn-"+$(this).data("btn-class");$(this).hasClass("btn-default")?($(".btn-sm > input").attr("checked","checked"),$(".btn-sm > input").prop("checked",!0),$(".btn-sm").addClass(a),$(".btn-sm").addClass("active"),$(".btn-sm").removeClass("btn-default")):($(".btn-sm > input").attr("checked",""),$(".btn-sm > input").removeAttr("checked"),$(".btn-sm > input").checked=!1,$(".btn-sm").removeClass(a),$(".btn-sm").removeClass("active"),$(".btn-sm").addClass("btn-default"))})}),$(document).ready(function(){$(".searx_overpass_request").on("click",function(a){var b="https://overpass-api.de/api/interpreter?data=",c=b+"[out:json][timeout:25];(",d=");out meta;",e=$(this).data("osm-id"),f=$(this).data("osm-type"),g=$(this).data("result-table"),h="#"+$(this).data("result-table-loadicon"),i=["addr:city","addr:country","addr:housenumber","addr:postcode","addr:street"];if(e&&f&&g){g="#"+g;var j=null;switch(f){case"node":j=c+"node("+e+");"+d;break;case"way":j=c+"way("+e+");"+d;break;case"relation":j=c+"relation("+e+");"+d}if(j){$.ajax(j).done(function(a){if(a&&a.elements&&a.elements[0]){var b=a.elements[0],c=$(g).html();for(var d in b.tags)if(null===b.tags.name||i.indexOf(d)==-1){switch(c+="<tr><td>"+d+"</td><td>",d){case"phone":case"fax":c+='<a href="tel:'+b.tags[d].replace(/ /g,"")+'">'+b.tags[d]+"</a>";break;case"email":c+='<a href="mailto:'+b.tags[d]+'">'+b.tags[d]+"</a>";break;case"website":case"url":c+='<a href="'+b.tags[d]+'">'+b.tags[d]+"</a>";break;case"wikidata":c+='<a href="https://www.wikidata.org/wiki/'+b.tags[d]+'">'+b.tags[d]+"</a>";break;case"wikipedia":if(b.tags[d].indexOf(":")!=-1){c+='<a href="https://'+b.tags[d].substring(0,b.tags[d].indexOf(":"))+".wikipedia.org/wiki/"+b.tags[d].substring(b.tags[d].indexOf(":")+1)+'">'+b.tags[d]+"</a>";break}default:c+=b.tags[d]}c+="</td></tr>"}$(g).html(c),$(g).removeClass("hidden"),$(h).addClass("hidden")}}).fail(function(){$(h).html($(h).html()+'<p class="text-muted">could not load data!</p>')})}}$(this).off(a)}),$(".searx_init_map").on("click",function(a){var b=$(this).data("leaflet-target"),c=$(this).data("map-lon"),d=$(this).data("map-lat"),e=$(this).data("map-zoom"),f=$(this).data("map-boundingbox"),g=$(this).data("map-geojson");require(["leaflet-0.7.3.min"],function(a){f&&(southWest=L.latLng(f[0],f[2]),northEast=L.latLng(f[1],f[3]),map_bounds=L.latLngBounds(southWest,northEast)),L.Icon.Default.imagePath="./static/themes/oscar/img/map";var h=L.map(b),i="https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png",j='Map data © <a href="https://openstreetmap.org">OpenStreetMap</a> contributors',k=new L.TileLayer(i,{minZoom:1,maxZoom:19,attribution:j}),l="https://maps.wikimedia.org/osm-intl/{z}/{x}/{y}.png",m='Wikimedia maps beta | Maps data © <a href="https://openstreetmap.org">OpenStreetMap</a> contributors';new L.TileLayer(l,{minZoom:1,maxZoom:19,attribution:m});map_bounds?setTimeout(function(){h.fitBounds(map_bounds,{maxZoom:17})},0):c&&d&&(e?h.setView(new L.LatLng(d,c),e):h.setView(new L.LatLng(d,c),8)),h.addLayer(k);var n={"OSM Mapnik":k};L.control.layers(n).addTo(h),g&&L.geoJson(g).addTo(h)}),$(this).off(a)})}),$(document).ready(function(){$("#allow-all-engines").click(function(){$(".onoffswitch-checkbox").each(function(){this.checked=!1})}),$("#disable-all-engines").click(function(){$(".onoffswitch-checkbox").each(function(){this.checked=!0})})});
\ No newline at end of file
diff --git a/searx/static/themes/oscar/js/searx_src/toggleall.js b/searx/static/themes/oscar/js/searx_src/toggleall.js
new file mode 100644
index 000000000..b6c484e3e
--- /dev/null
+++ b/searx/static/themes/oscar/js/searx_src/toggleall.js
@@ -0,0 +1,10 @@
+$(document).ready(function(){
+    $("#allow-all-engines").click(function() {
+        $(".onoffswitch-checkbox").each(function() { this.checked = false;});
+    });
+
+    $("#disable-all-engines").click(function() {
+        $(".onoffswitch-checkbox").each(function() { this.checked = true;});
+    });
+});
+
diff --git a/searx/templates/oscar/preferences.html b/searx/templates/oscar/preferences.html
index b03929df3..38d9c7b04 100644
--- a/searx/templates/oscar/preferences.html
+++ b/searx/templates/oscar/preferences.html
@@ -155,6 +155,14 @@
 
                 <!-- Tab panes -->
                 <div class="tab-content">
+
+                    <div class="hide_if_nojs">
+                        <p class="text-{% if rtl %}left{% else %}right{% endif %}">
+                            <button type="button" class="btn btn-default btn-success" id="allow-all-engines">{{ _("Allow all") }}</button>
+                            <button type="button" class="btn btn-default btn-danger" id="disable-all-engines">{{ _("Disable all") }}</button>
+                        </p>
+                    </div>
+
                     {% for categ in all_categories %}
                     <noscript><label>{{ _(categ) }}</label>
                     </noscript>