diff --git a/front/config/prod.env.js b/front/config/prod.env.js
index decfe361..773d263d 100644
--- a/front/config/prod.env.js
+++ b/front/config/prod.env.js
@@ -1,4 +1,3 @@
 module.exports = {
-  NODE_ENV: '"production"',
-  BACKEND_URL: '"/"'
+  NODE_ENV: '"production"'
 }
diff --git a/front/src/App.vue b/front/src/App.vue
index 73e46328..56dbe0aa 100644
--- a/front/src/App.vue
+++ b/front/src/App.vue
@@ -39,7 +39,13 @@
                   <template v-else>{{ $t('Source code') }}</template>
                 </a>
                 <a href="https://code.eliotberriot.com/funkwhale/funkwhale/issues" class="item" target="_blank">{{ $t('Issue tracker') }}</a>
-                <a  @click="switchInstance" class="item" target="_blank">{{ $t('Use another instance') }}</a>
+                <a @click="switchInstance" class="item" >
+                  {{ $t('Use another instance') }}
+                  <template v-if="$store.state.instance.instanceUrl !== '/'">
+                    <br>
+                    ({{ $store.state.instance.instanceUrl }})
+                  </template>
+                </a>
               </div>
             </div>
             <div class="ten wide column">
diff --git a/front/src/audio/backend.js b/front/src/audio/backend.js
index 619f3cef..5a82719a 100644
--- a/front/src/audio/backend.js
+++ b/front/src/audio/backend.js
@@ -1,5 +1,3 @@
-import config from '@/config'
-
 var Album = {
   clean (album) {
     // we manually rebind the album and artist to each child track
@@ -21,21 +19,6 @@ var Artist = {
   }
 }
 export default {
-  absoluteUrl (url) {
-    if (url.startsWith('http')) {
-      return url
-    }
-    if (url.startsWith('/')) {
-      let rootUrl = (
-        window.location.protocol + '//' + window.location.hostname +
-        (window.location.port ? ':' + window.location.port : '')
-      )
-      return rootUrl + url
-    } else {
-      return config.BACKEND_URL + url
-    }
-  },
   Artist: Artist,
   Album: Album
-
 }
diff --git a/front/src/audio/track.js b/front/src/audio/track.js
deleted file mode 100644
index 9873b74e..00000000
--- a/front/src/audio/track.js
+++ /dev/null
@@ -1,7 +0,0 @@
-import backend from './backend'
-
-export default {
-  getCover (track) {
-    return backend.absoluteUrl(track.album.cover)
-  }
-}
diff --git a/front/src/components/Sidebar.vue b/front/src/components/Sidebar.vue
index 87c374a3..de018907 100644
--- a/front/src/components/Sidebar.vue
+++ b/front/src/components/Sidebar.vue
@@ -125,7 +125,7 @@
           <tr @click="$store.dispatch('queue/currentIndex', index)" v-for="(track, index) in queue.tracks" :key="index" :class="[{'active': index === queue.currentIndex}]">
               <td class="right aligned">{{ index + 1}}</td>
               <td class="center aligned">
-                  <img class="ui mini image" v-if="track.album.cover" :src="backend.absoluteUrl(track.album.cover)">
+                  <img class="ui mini image" v-if="track.album.cover" :src="$store.getters['instance/absoluteUrl'](track.album.cover)">
                   <img class="ui mini image" v-else src="../assets/audio/default-cover.png">
               </td>
               <td colspan="4">
diff --git a/front/src/components/audio/Player.vue b/front/src/components/audio/Player.vue
index 3c922e14..1cc27970 100644
--- a/front/src/components/audio/Player.vue
+++ b/front/src/components/audio/Player.vue
@@ -14,7 +14,7 @@
       <div v-if="currentTrack" class="track-area ui unstackable items">
         <div class="ui inverted item">
           <div class="ui tiny image">
-            <img ref="cover" @load="updateBackground" v-if="currentTrack.album.cover" :src="Track.getCover(currentTrack)">
+            <img ref="cover" @load="updateBackground" v-if="currentTrack.album.cover" :src="$store.getters['instance/absoluteUrl'](currentTrack.album.cover)">
             <img v-else src="../../assets/audio/default-cover.png">
           </div>
           <div class="middle aligned content">
@@ -143,7 +143,6 @@ import {mapState, mapGetters, mapActions} from 'vuex'
 import GlobalEvents from '@/components/utils/global-events'
 import ColorThief from '@/vendor/color-thief'
 
-import Track from '@/audio/track'
 import AudioTrack from '@/components/audio/Track'
 import TrackFavoriteIcon from '@/components/favorites/TrackFavoriteIcon'
 import TrackPlaylistIcon from '@/components/playlists/TrackPlaylistIcon'
@@ -162,7 +161,6 @@ export default {
       isShuffling: false,
       renderAudio: true,
       sliderVolume: this.volume,
-      Track: Track,
       defaultAmbiantColors: defaultAmbiantColors,
       ambiantColors: defaultAmbiantColors
     }
diff --git a/front/src/components/audio/SearchBar.vue b/front/src/components/audio/SearchBar.vue
index 99896d04..9b6dc50e 100644
--- a/front/src/components/audio/SearchBar.vue
+++ b/front/src/components/audio/SearchBar.vue
@@ -11,11 +11,8 @@
 
 <script>
 import jQuery from 'jquery'
-import config from '@/config'
 import router from '@/router'
 
-const SEARCH_URL = config.API_URL + 'search?query={query}'
-
 export default {
   mounted () {
     let self = this
@@ -94,7 +91,7 @@ export default {
           })
           return {results: results}
         },
-        url: SEARCH_URL
+        url: this.$store.getters['instance/absoluteUrl']('search?query={query}')
       }
     })
   }
diff --git a/front/src/components/audio/Track.vue b/front/src/components/audio/Track.vue
index 366f104f..2ded7cb0 100644
--- a/front/src/components/audio/Track.vue
+++ b/front/src/components/audio/Track.vue
@@ -49,7 +49,7 @@ export default {
         return []
       }
       let sources = [
-        {type: file.mimetype, url: file.path}
+        {type: file.mimetype, url: this.$store.getters['instance/absoluteUrl'](file.path)}
       ]
       if (this.$store.state.auth.authenticated) {
         // we need to send the token directly in url
diff --git a/front/src/components/audio/album/Card.vue b/front/src/components/audio/album/Card.vue
index 6742dca4..37827718 100644
--- a/front/src/components/audio/album/Card.vue
+++ b/front/src/components/audio/album/Card.vue
@@ -2,7 +2,7 @@
     <div class="ui card">
       <div class="content">
         <div class="right floated tiny ui image">
-          <img v-if="album.cover" v-lazy="backend.absoluteUrl(album.cover)">
+          <img v-if="album.cover" v-lazy="$store.getters['instance/absoluteUrl'](album.cover)">
           <img v-else src="../../../assets/audio/default-cover.png">
         </div>
         <div class="header">
diff --git a/front/src/components/audio/artist/Card.vue b/front/src/components/audio/artist/Card.vue
index a4650679..b19c5e12 100644
--- a/front/src/components/audio/artist/Card.vue
+++ b/front/src/components/audio/artist/Card.vue
@@ -11,7 +11,7 @@
             <tbody>
               <tr v-for="album in albums">
                 <td>
-                  <img class="ui mini image" v-if="album.cover" :src="backend.absoluteUrl(album.cover)">
+                  <img class="ui mini image" v-if="album.cover" :src="$store.getters['instance/absoluteUrl'](album.cover)">
                   <img class="ui mini image" v-else src="../../../assets/audio/default-cover.png">
                 </td>
                 <td colspan="4">
diff --git a/front/src/components/audio/track/Row.vue b/front/src/components/audio/track/Row.vue
index 8310e89c..bd3ceb2a 100644
--- a/front/src/components/audio/track/Row.vue
+++ b/front/src/components/audio/track/Row.vue
@@ -4,7 +4,7 @@
       <play-button class="basic icon" :discrete="true" :track="track"></play-button>
     </td>
     <td>
-      <img class="ui mini image" v-if="track.album.cover" v-lazy="backend.absoluteUrl(track.album.cover)">
+      <img class="ui mini image" v-if="track.album.cover" v-lazy="$store.getters['instance/absoluteUrl'](track.album.cover)">
       <img class="ui mini image" v-else src="../../..//assets/audio/default-cover.png">
     </td>
     <td colspan="6">
diff --git a/front/src/components/audio/track/Table.vue b/front/src/components/audio/track/Table.vue
index 4559b3c4..81869ff5 100644
--- a/front/src/components/audio/track/Table.vue
+++ b/front/src/components/audio/track/Table.vue
@@ -35,7 +35,7 @@
                 <pre>
 export PRIVATE_TOKEN="{{ $store.state.auth.token }}"
 <template v-for="track in tracks"><template v-if="track.files.length > 0">
-curl -G -o "{{ track.files[0].filename }}" <template v-if="$store.state.auth.authenticated">--header "Authorization: JWT $PRIVATE_TOKEN"</template> "{{ backend.absoluteUrl(track.files[0].path) }}"</template></template>
+curl -G -o "{{ track.files[0].filename }}" <template v-if="$store.state.auth.authenticated">--header "Authorization: JWT $PRIVATE_TOKEN"</template> "{{ $store.getters['instance/absoluteUrl'](track.files[0].path) }}"</template></template>
 </pre>
               </div>
             </div>
diff --git a/front/src/components/library/Album.vue b/front/src/components/library/Album.vue
index 1681d46e..9a4288b8 100644
--- a/front/src/components/library/Album.vue
+++ b/front/src/components/library/Album.vue
@@ -87,7 +87,7 @@ export default {
       if (!this.album.cover) {
         return ''
       }
-      return 'background-image: url(' + backend.absoluteUrl(this.album.cover) + ')'
+      return 'background-image: url(' + this.$store.getters['instance/absoluteUrl'](this.album.cover) + ')'
     }
   },
   watch: {
diff --git a/front/src/components/library/Artist.vue b/front/src/components/library/Artist.vue
index 7d0a41d8..171b80e8 100644
--- a/front/src/components/library/Artist.vue
+++ b/front/src/components/library/Artist.vue
@@ -127,7 +127,7 @@ export default {
       if (!this.cover) {
         return ''
       }
-      return 'background-image: url(' + backend.absoluteUrl(this.cover) + ')'
+      return 'background-image: url(' + this.$store.getters['instance/absoluteUrl'](this.cover) + ')'
     }
   },
   watch: {
diff --git a/front/src/components/library/Track.vue b/front/src/components/library/Track.vue
index 24acca75..af364e94 100644
--- a/front/src/components/library/Track.vue
+++ b/front/src/components/library/Track.vue
@@ -108,7 +108,6 @@ import time from '@/utils/time'
 import axios from 'axios'
 import url from '@/utils/url'
 import logger from '@/logging'
-import backend from '@/audio/backend'
 import PlayButton from '@/components/audio/PlayButton'
 import TrackFavoriteIcon from '@/components/favorites/TrackFavoriteIcon'
 import TrackPlaylistIcon from '@/components/playlists/TrackPlaylistIcon'
@@ -169,7 +168,7 @@ export default {
     },
     downloadUrl () {
       if (this.track.files.length > 0) {
-        let u = backend.absoluteUrl(this.track.files[0].path)
+        let u = this.$store.getters['instance/absoluteUrl'](this.track.files[0].path)
         if (this.$store.state.auth.authenticated) {
           u = url.updateQueryString(u, 'jwt', this.$store.state.auth.token)
         }
@@ -191,7 +190,7 @@ export default {
       if (!this.cover) {
         return ''
       }
-      return 'background-image: url(' + backend.absoluteUrl(this.cover) + ')'
+      return 'background-image: url(' + this.$store.getters['instance/absoluteUrl'](this.cover) + ')'
     }
   },
   watch: {
diff --git a/front/src/components/library/radios/Filter.vue b/front/src/components/library/radios/Filter.vue
index b27c3607..0d268dc6 100644
--- a/front/src/components/library/radios/Filter.vue
+++ b/front/src/components/library/radios/Filter.vue
@@ -63,7 +63,6 @@
 </template>
 <script>
 import axios from 'axios'
-import config from '@/config'
 import $ from 'jquery'
 import _ from 'lodash'
 
@@ -86,7 +85,7 @@ export default {
     return {
       checkResult: null,
       showCandidadesModal: false,
-      exclude: config.not
+      exclude: this.config.not
     }
   },
   mounted: function () {
diff --git a/front/src/components/manage/users/InvitationForm.vue b/front/src/components/manage/users/InvitationForm.vue
index 9429c1ae..d9f0969e 100644
--- a/front/src/components/manage/users/InvitationForm.vue
+++ b/front/src/components/manage/users/InvitationForm.vue
@@ -43,8 +43,6 @@
 <script>
 import axios from 'axios'
 
-import backend from '@/audio/backend'
-
 export default {
   data () {
     return {
@@ -72,7 +70,7 @@ export default {
       })
     },
     getUrl (code) {
-      return backend.absoluteUrl(this.$router.resolve({name: 'signup', query: {invitation: code.toUpperCase()}}).href)
+      return this.$store.getters['instance/absoluteUrl'](this.$router.resolve({name: 'signup', query: {invitation: code.toUpperCase()}}).href)
     }
   }
 }
diff --git a/front/src/components/metadata/Search.vue b/front/src/components/metadata/Search.vue
index 305aa7a3..0379cb18 100644
--- a/front/src/components/metadata/Search.vue
+++ b/front/src/components/metadata/Search.vue
@@ -22,7 +22,6 @@
 
 <script>
 import jQuery from 'jquery'
-import config from '@/config'
 
 export default {
   props: {
@@ -117,7 +116,7 @@ export default {
       })[0]
     },
     searchUrl: function () {
-      return config.API_URL + 'providers/musicbrainz/search/' + this.currentTypeObject.value + 's/?query={query}'
+      return this.$store.getters['instance/absoluteUrl']('providers/musicbrainz/search/' + this.currentTypeObject.value + 's/?query={query}')
     },
     types: function () {
       return [
diff --git a/front/src/config.js b/front/src/config.js
deleted file mode 100644
index 47d9d7b8..00000000
--- a/front/src/config.js
+++ /dev/null
@@ -1,8 +0,0 @@
-class Config {
-  constructor () {
-    this.BACKEND_URL = process.env.BACKEND_URL
-    this.API_URL = this.BACKEND_URL + 'api/v1/'
-  }
-}
-
-export default new Config()
diff --git a/front/src/store/instance.js b/front/src/store/instance.js
index 555bd823..ba069ac4 100644
--- a/front/src/store/instance.js
+++ b/front/src/store/instance.js
@@ -6,7 +6,7 @@ export default {
   namespaced: true,
   state: {
     maxEvents: 200,
-    instanceUrl: process.env.INSTANCE_URL,
+    instanceUrl: '/',
     events: [],
     settings: {
       instance: {