diff --git a/README.md b/README.md
index 70e9934..29d19e5 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ More information:
 http://brouter.de
 
 General BRouter discussions/questions, support:  
-http://groups.google.com/group/osm-android-bikerouting
+https://groups.google.com/group/osm-android-bikerouting
 
 ## Installation
 
@@ -75,7 +75,7 @@ This is needed for pre-loading the selected profile (unless you allowed local fi
 
 ### Dependencies
 
-Requires [Node and npm](http://nodejs.org/) (or [io.js](https://iojs.org)), [Bower](http://bower.io/) and [Gulp](http://gulpjs.com/):
+Requires [Node and npm](https://nodejs.org/) (or [io.js](https://iojs.org)), [Bower](https://bower.io/) and [Gulp](http://gulpjs.com/):
 
     npm install -g bower
     npm install -g gulp
@@ -118,12 +118,12 @@ Copyright (c) 2012 [sa3m](https://github.com/sa3m), Copyright (c) 2013 Per Liedm
 Copyright (c) 2011-2012, Pavel Shramov; [2-clause BSD License](https://github.com/shramov/leaflet-plugins/blob/master/LICENSE)
 * [Async.js](https://github.com/caolan/async)  
 Copyright (c) 2010-2014 Caolan McMahon; [MIT License](https://github.com/caolan/async/blob/master/LICENSE)
-* [Bootstrap](http://getbootstrap.com/)  
+* [Bootstrap](https://getbootstrap.com/)  
 Copyright (c) 2011-2014 Twitter, Inc; [MIT License](https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * [jQuery](https://github.com/jquery/jquery)  
 Copyright 2005, 2014 jQuery Foundation and other contributors; [MIT License](https://github.com/jquery/jquery/blob/master/LICENSE.txt)
 * [DataTables](https://github.com/DataTables/DataTables)  
-Copyright (C) 2008-2014, SpryMedia Ltd.; [MIT License](http://www.datatables.net/license/mit)
+Copyright (C) 2008-2014, SpryMedia Ltd.; [MIT License](https://www.datatables.net/license/MIT-LICENCE)
 * [Leaflet.EasyButton](https://github.com/CliffCloud/Leaflet.EasyButton)  
 Copyright (C) 2014 Daniel Montague; [MIT License](https://github.com/CliffCloud/Leaflet.EasyButton/blob/master/LICENSE)
 * [Bootbox](https://github.com/makeusabrew/bootbox)  
@@ -135,4 +135,4 @@ Copyright (c) 2012 Makina Corpus, [MIT License](https://github.com/makinacorpus/
 * [Leaflet.Locate](https://github.com/domoritz/leaflet-locatecontrol)  
 Copyright (c) 2014 Dominik Moritz, [MIT License](https://github.com/domoritz/leaflet-locatecontrol/blob/gh-pages/LICENSE)
 * [Font Awesome](http://fontawesome.io/license/)  
-by Dave Gandy; [SIL OFL 1.1](http://scripts.sil.org/OFL) (Font), MIT License (Code), CC BY 3.0 (Documentation)
+by Dave Gandy; [SIL OFL 1.1](https://scripts.sil.org/OFL) (Font), MIT License (Code), CC BY 3.0 (Documentation)
diff --git a/css/style.css b/css/style.css
index 7e28243..f546044 100644
--- a/css/style.css
+++ b/css/style.css
@@ -110,7 +110,7 @@ footer {
 }
 
 /* dashed line animation, derived from Chris Coyier and others
-http://css-tricks.com/svg-line-animation-works/
+https://css-tricks.com/svg-line-animation-works/
 */
 .loading-trailer {
     -webkit-animation: dash 0.4s linear infinite;
diff --git a/index.html b/index.html
index 00d62b4..94ea82f 100644
--- a/index.html
+++ b/index.html
@@ -64,11 +64,11 @@
                     <dl>
                         <dt>Map data</dt>
                         <dd>
-                            &copy; <a target="_blank" href="http://www.openstreetmap.org/copyright">OpenStreetMap contributors</a>
-                            under <a target="_blank" href="http://opendatacommons.org/licenses/odbl/">ODbL</a>
+                            &copy; <a target="_blank" href="https://www.openstreetmap.org/copyright">OpenStreetMap contributors</a>
+                            under <a target="_blank" href="https://opendatacommons.org/licenses/odbl/">ODbL</a>
                         </dd>
                         <dt>OpenstreetMap.de tiles</dt>
-                        <dd><a target="_blank" href="http://openstreetmap.de/karte.html">openstreetmap.de</a></dd>
+                        <dd><a target="_blank" href="https://openstreetmap.de/karte.html">openstreetmap.de</a></dd>
                         <dt>OpenTopoMap tiles</dt>
                         <dd>
                             &copy; <a target="_blank" href="https://opentopomap.org">OpenTopoMap</a>
@@ -77,13 +77,13 @@
                         </dd>
                         <dt>Thunderforest tiles</dt>
                         <dd>
-                            &copy; <a target="_blank" href="http://www.thunderforest.com">Thunderforest</a>
-                            under <a target="_blank" href="http://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA 2.0</a>
+                            &copy; <a target="_blank" href="https://www.thunderforest.com">Thunderforest</a>
+                            under <a target="_blank" href="https://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA 2.0</a>
                         </dd>
                         <dt>Waymarked Trails tiles</dt>
                         <dd>
-                            &copy; <a target="_blank" href="http://cycling.waymarkedtrails.org">Waymarked Trails</a>
-                            under <a target="_blank" href="http://creativecommons.org/licenses/by-sa/3.0/de/deed.en">CC-BY-SA 3.0 DE</a>
+                            &copy; <a target="_blank" href="https://cycling.waymarkedtrails.org">Waymarked Trails</a>
+                            under <a target="_blank" href="https://creativecommons.org/licenses/by-sa/3.0/de/deed.en">CC-BY-SA 3.0 DE</a>
                         </dd>
                         <dt>BRouter</dt>
                         <dd>
@@ -139,7 +139,7 @@
                         <i>Contact:</i><br>
                         <ul>
                             <li>General discussions/questions, support:<br>
-                                <a href="http://groups.google.com/group/osm-android-bikerouting" target="_blank">http://groups.google.com/group/osm-android-bikerouting</a>
+                                <a href="https://groups.google.com/group/osm-android-bikerouting" target="_blank">https://groups.google.com/group/osm-android-bikerouting</a>
                             </li>
                             <li>Bug reports and feature requests:
                                 <ul>
@@ -157,7 +157,7 @@
                     </p>
                     <p>
                         <i>Data:</i><br>
-                        This is based on <a href="http://www.openstreetmap.org" target="_blank">OpenStreetMap</a>. It is usually updated once a week when a new Planet file is available,
+                        This is based on <a href="https://www.openstreetmap.org" target="_blank">OpenStreetMap</a>. It is usually updated once a week when a new Planet file is available,
                         see dates of <a href="http://brouter.de/brouter/segments4/" target="_blank">data files</a>.
                     </p>
                     <p>
diff --git a/js/Map.js b/js/Map.js
index 8c1f06b..d1930aa 100644
--- a/js/Map.js
+++ b/js/Map.js
@@ -8,28 +8,28 @@ BR.Map = {
 
         var maxZoom = 19;
 
-        var osm = L.tileLayer('http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
+        var osm = L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
             maxZoom: maxZoom
         });
 
-        var osmde = L.tileLayer('http://{s}.tile.openstreetmap.de/tiles/osmde/{z}/{x}/{y}.png', {
+        var osmde = L.tileLayer('https://{s}.tile.openstreetmap.de/tiles/osmde/{z}/{x}/{y}.png', {
             maxNativeZoom: 18,
             maxZoom: maxZoom
         });
 
-        var topo = L.tileLayer('http://{s}.tile.opentopomap.org/{z}/{x}/{y}.png', {
+        var topo = L.tileLayer('https://{s}.tile.opentopomap.org/{z}/{x}/{y}.png', {
             maxNativeZoom: 17,
             maxZoom: maxZoom
         });
 
-        var thunderforestAttribution = 'tiles &copy; <a target="_blank" href="http://www.thunderforest.com">Thunderforest</a> '
-            + '(<a target="_blank" href="http://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA 2.0</a>)';
+        var thunderforestAttribution = 'tiles &copy; <a target="_blank" href="https://www.thunderforest.com">Thunderforest</a> '
+            + '(<a target="_blank" href="https://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA 2.0</a>)';
         var thunderforestAuth = BR.keys.thunderforest ? '?apikey=' + BR.keys.thunderforest : '';
-        var cycle = L.tileLayer('http://{s}.tile.thunderforest.com/cycle/{z}/{x}/{y}.png' + thunderforestAuth, {
+        var cycle = L.tileLayer('https://{s}.tile.thunderforest.com/cycle/{z}/{x}/{y}.png' + thunderforestAuth, {
             maxNativeZoom: 18,
             maxZoom: maxZoom
         });
-        var outdoors = L.tileLayer('http://{s}.tile.thunderforest.com/outdoors/{z}/{x}/{y}.png' + thunderforestAuth, {
+        var outdoors = L.tileLayer('https://{s}.tile.thunderforest.com/outdoors/{z}/{x}/{y}.png' + thunderforestAuth, {
             maxNativeZoom: 18,
             maxZoom: maxZoom
         });
@@ -39,16 +39,16 @@ BR.Map = {
             maxZoom: maxZoom,
             subdomains: ['server', 'services'],
             attribution: '<a target="_blank" href="http://goto.arcgisonline.com/maps/World_Imagery">World Imagery</a> '
-                + '&copy; <a target="_blank" href="http://www.esri.com/">Esri</a>, sources: '
+                + '&copy; <a target="_blank" href="https://www.esri.com/">Esri</a>, sources: '
                 + 'Esri, DigitalGlobe, Earthstar Geographics, CNES/Airbus DS, GeoEye, USDA FSA, USGS, Getmapping, Aerogrid, IGN, IGP, and the GIS User Community'
         });
 
-        var cycling = L.tileLayer('http://tile.waymarkedtrails.org/cycling/{z}/{x}/{y}.png', {
+        var cycling = L.tileLayer('https://tile.waymarkedtrails.org/cycling/{z}/{x}/{y}.png', {
           maxNativeZoom: 18,
           opacity: 0.7,
           maxZoom: maxZoom
         });
-        var hiking = L.tileLayer('http://tile.waymarkedtrails.org/hiking/{z}/{x}/{y}.png', {
+        var hiking = L.tileLayer('https://tile.waymarkedtrails.org/hiking/{z}/{x}/{y}.png', {
           maxNativeZoom: 18,
           opacity: 0.7,
           maxZoom: maxZoom
@@ -86,7 +86,7 @@ BR.Map = {
                 minZoom: 1,
                 maxZoom: 19,
                 attribution: '&copy; <a href="https://www.digitalglobe.com/platforms/mapsapi">DigitalGlobe</a> ('
-                           + '<a href="http://bit.ly/mapsapiview">Terms of Use</a>)'
+                           + '<a href="https://bit.ly/mapsapiview">Terms of Use</a>)'
             });
             baseLayers['DigitalGlobe Recent Imagery'] = recent;
         }
diff --git a/js/Util.js b/js/Util.js
index 4ff5d8a..87799fd 100644
--- a/js/Util.js
+++ b/js/Util.js
@@ -33,12 +33,12 @@ BR.Util = {
 
     // check if localStorage is available, especially for catching SecurityError
     // when cookie settings are blocking access (Chrome, Pale Moon, older Firefox)
-    // 
+    //
     // see also https://github.com/Modernizr/Modernizr/blob/master/feature-detects/storage/localstorage.js
-    // 
+    //
     // https://developer.mozilla.org/en-US/docs/Web/API/Web_Storage_API/Using_the_Web_Storage_API#Testing_for_support_vs_availability
-    // by Mozilla Contributors, with modifications; 
-    // Any copyright is dedicated to the Public Domain. http://creativecommons.org/publicdomain/zero/1.0/
+    // by Mozilla Contributors, with modifications;
+    // Any copyright is dedicated to the Public Domain. https://creativecommons.org/publicdomain/zero/1.0/
     localStorageAvailable: function() {
         try {
             var storage = window.localStorage,
diff --git a/js/plugin/Bing.js b/js/plugin/Bing.js
index 981820f..ed076b8 100644
--- a/js/plugin/Bing.js
+++ b/js/plugin/Bing.js
@@ -1,8 +1,8 @@
 BR.BingLayer = L.BingLayer.extend({
     options: {
         maxZoom: 19,
-        attribution: '<a target="_blank" href="http://www.bing.com/maps/">Bing Maps</a>'
-            + ' (<a target="_blank" href="http://go.microsoft.com/?linkid=9710837">TOU</a>)'
+        attribution: '<a target="_blank" href="https://www.bing.com/maps/">Bing Maps</a>'
+            + ' (<a target="_blank" href="https://go.microsoft.com/?linkid=9710837">TOU</a>)'
     },
 
     initialize: function(key, options) {
@@ -11,7 +11,7 @@ BR.BingLayer = L.BingLayer.extend({
         this._logo = L.control({position: 'bottomleft'});
         this._logo.onAdd = function (map) {
             this._div = L.DomUtil.create('div', 'bing-logo');
-            this._div.innerHTML = '<img src="http://www.microsoft.com/maps/images/branding/Bing%20logo%20white_50px-19px.png">';
+            this._div.innerHTML = '<img src="https://www.microsoft.com/maps/images/branding/Bing%20logo%20white_50px-19px.png">';
             return this._div;
         };
     },
diff --git a/js/plugin/Routing.js b/js/plugin/Routing.js
index 29559a8..30e39ed 100644
--- a/js/plugin/Routing.js
+++ b/js/plugin/Routing.js
@@ -152,7 +152,7 @@ BR.Routing = L.Routing.extend({
     // transparent than with a single layer and the slider is non-linear. The
     // inverted formula is used to get the same result as with a single layer.
     // SVG simple alpha compositing: Ca' = 1 - (1 - Ea) * (1 - Ca)
-    // http://www.w3.org/TR/SVG11/masking.html#SimpleAlphaBlending
+    // https://www.w3.org/TR/SVG11/masking.html#SimpleAlphaBlending
     var sourceOpacity = 1 - Math.sqrt(1 - opacity);
 
     this.options.styles.track.opacity = sourceOpacity;
diff --git a/js/plugin/Search.js b/js/plugin/Search.js
index 373ea86..81e2ce1 100644
--- a/js/plugin/Search.js
+++ b/js/plugin/Search.js
@@ -8,7 +8,7 @@ BR.Search = L.Control.Geocoder.extend({
 
     onAdd: function (map) {
         map.attributionControl.addAttribution(
-            'search by <a href="http://wiki.openstreetmap.org/wiki/Nominatim" target="_blank">Nominatim</a>');
+            'search by <a href="https://wiki.openstreetmap.org/wiki/Nominatim" target="_blank">Nominatim</a>');
 
         return L.Control.Geocoder.prototype.onAdd.call(this, map);
     },
diff --git a/keys.js.template b/keys.js.template
index 2597bd4..a2b4e64 100644
--- a/keys.js.template
+++ b/keys.js.template
@@ -3,13 +3,13 @@
     // COPYING: Please get your own API keys from the sites listed below
 
     BR.keys = {
-        // Bing maps, http://www.microsoft.com/maps/default.aspx
+        // Bing maps, https://www.microsoft.com/maps/default.aspx
         bing: '',
-        
+
         // DigitalGlobe, https://developer.digitalglobe.com/maps-api/#plans
         digitalGlobe: '',
 
-        // Thunderforest, http://thunderforest.com/pricing/
+        // Thunderforest, https://thunderforest.com/pricing/
         thunderforest: ''
     };