diff --git a/client/common/configuration/register.ts b/client/common/configuration/register.ts
index 70cbc989..83f0aec2 100644
--- a/client/common/configuration/register.ts
+++ b/client/common/configuration/register.ts
@@ -46,7 +46,9 @@ async function registerConfiguration (clientOptions: RegisterClientOptions): Pro
         converseRoot.classList.add('theme-peertube')
         container.append(converseRoot)
 
-        window.initConverse(converseJSParams, 'embedded')
+        const authHeader = peertubeHelpers.getAuthHeader()
+
+        window.initConverse(converseJSParams, 'peertube-fullpage', authHeader ?? null)
       } catch (err) {
         console.error('[peertube-plugin-livechat] ' + (err as string))
         rootEl.innerText = await peertubeHelpers.translate(LOC_NOT_FOUND)
diff --git a/client/utils/conversejs.ts b/client/utils/conversejs.ts
index 3bbdd8cf..ec524a65 100644
--- a/client/utils/conversejs.ts
+++ b/client/utils/conversejs.ts
@@ -1,6 +1,7 @@
 import type { InitConverseJSParams } from 'shared/lib/types'
 import { computeAutoColors } from './colors'
 
+// FIXME
 // declare global {
 //   interface Window {
 //     converse?: {
@@ -12,6 +13,7 @@ import { computeAutoColors } from './colors'
 //   }
 // }
 
+// FIXME: better declaration
 declare global {
   interface Window {
     converse?: any
diff --git a/conversejs/builtin.ts b/conversejs/builtin.ts
index 4df6f438..45ed60ea 100644
--- a/conversejs/builtin.ts
+++ b/conversejs/builtin.ts
@@ -24,9 +24,24 @@ declare global {
   }
 }
 
+/**
+ * ChatIncludeMode:
+ * - chat-only: the chat is on a full page, without Peertube
+ * - peertube-fullpage: the chat is embedded in Peertube, in a full custom page
+ * - peertube-video: the chat is embedded in Peertube, beside a video
+ */
+type ChatIncludeMode = 'chat-only' | 'peertube-fullpage' | 'peertube-video'
+
+/**
+ * Init ConverseJS
+ * @param initConverseParams ConverseJS init Params
+ * @param chatIncludeMode How the chat is included in the html page
+ * @param peertubeAuthHeader when embedded in Peertube, we can get the header from peertubeHelpers
+ */
 window.initConverse = async function initConverse (
   initConverseParams: InitConverseJSParams,
-  viewMode: 'fullscreen' | 'embedded' = 'fullscreen'
+  chatIncludeMode: ChatIncludeMode = 'chat-only',
+  peertubeAuthHeader?: { [header: string]: string } | null
 ): Promise<void> {
   // First, fixing relative websocket urls.
   if (initConverseParams.localWebsocketServiceUrl?.startsWith('/')) {
@@ -50,13 +65,13 @@ window.initConverse = async function initConverse (
   const isInIframe = inIframe()
   initDom(initConverseParams, isInIframe)
   const params = defaultConverseParams(initConverseParams, isInIframe)
-  params.view_mode = viewMode
-  params.allow_url_history_change = viewMode === 'fullscreen'
+  params.view_mode = chatIncludeMode === 'chat-only' ? 'fullscreen' : 'embedded'
+  params.allow_url_history_change = chatIncludeMode === 'chat-only'
 
   let isAuthenticated: boolean = false
   let isRemoteWithNicknameSet: boolean = false
 
-  const auth = await getLocalAuthentInfos(authenticationUrl)
+  const auth = await getLocalAuthentInfos(authenticationUrl, peertubeAuthHeader)
   if (auth) {
     if (!isRemoteChat) {
       localRoomAuthenticatedParams(initConverseParams, auth, params)
@@ -93,28 +108,29 @@ window.initConverse = async function initConverse (
   }
 
   try {
-// TODO: disable this when on the new full page.
-    converse.plugins.add('livechatWindowTitlePlugin', {
-      dependencies: ['converse-muc-views'],
-      overrides: {
-        ChatRoomView: {
-          requestUpdate: function (this: any): any {
-            console.log('[livechatWindowTitlePlugin] updating the document title.')
-            try {
-              if (this.model?.getDisplayName) {
-                const title = this.model.getDisplayName()
-                if (document.title !== title) {
-                  document.title = title
+    if (chatIncludeMode === 'chat-only') {
+      converse.plugins.add('livechatWindowTitlePlugin', {
+        dependencies: ['converse-muc-views'],
+        overrides: {
+          ChatRoomView: {
+            requestUpdate: function (this: any): any {
+              console.log('[livechatWindowTitlePlugin] updating the document title.')
+              try {
+                if (this.model?.getDisplayName) {
+                  const title = this.model.getDisplayName()
+                  if (document.title !== title) {
+                    document.title = title
+                  }
                 }
+              } catch (err) {
+                console.error('[livechatWindowTitlePlugin] Failed updating the window title', err)
               }
-            } catch (err) {
-              console.error('[livechatWindowTitlePlugin] Failed updating the window title', err)
+              return this.__super__.requestUpdate.apply(this)
             }
-            return this.__super__.requestUpdate.apply(this)
           }
         }
-      }
-    })
+      })
+    }
 
     converse.plugins.add('converse-slow-mode', slowModePlugin)
 
diff --git a/conversejs/index.html b/conversejs/index.html
index db7af1be..db77cc19 100644
--- a/conversejs/index.html
+++ b/conversejs/index.html
@@ -15,7 +15,8 @@
 <div id="conversejs-bg" class="theme-peertube"></div>
 <script type="text/javascript">
   initConverse(
-    {INIT_CONVERSE_PARAMS}
+    {INIT_CONVERSE_PARAMS},
+    'chat-only'
   )
 </script>
 </body>
diff --git a/conversejs/lib/auth.ts b/conversejs/lib/auth.ts
index 86ff2a3c..8f3d0ed8 100644
--- a/conversejs/lib/auth.ts
+++ b/conversejs/lib/auth.ts
@@ -3,7 +3,13 @@ interface AuthentInfos {
   password: string
   nickname?: string
 }
-async function getLocalAuthentInfos (authenticationUrl: string): Promise<false | AuthentInfos> {
+
+interface AuthHeader { [key: string]: string }
+
+async function getLocalAuthentInfos (
+  authenticationUrl: string,
+  peertubeAuthHeader?: AuthHeader | null
+): Promise<false | AuthentInfos> {
   try {
     if (authenticationUrl === '') {
       console.error('Missing authenticationUrl')
@@ -13,25 +19,43 @@ async function getLocalAuthentInfos (authenticationUrl: string): Promise<false |
       console.error('Your browser has not the fetch api, we cant log you in')
       return false
     }
-    if (!window.localStorage) {
-      // FIXME: is the Peertube token always in localStorage?
-      console.error('Your browser has no localStorage, we cant log you in')
+
+    if (peertubeAuthHeader === null) {
+      console.info('User is not logged in.')
       return false
     }
-    const tokenType = window.localStorage.getItem('token_type') ?? ''
-    const accessToken = window.localStorage.getItem('access_token') ?? ''
-    const refreshToken = window.localStorage.getItem('refresh_token') ?? ''
-    if (tokenType === '' && accessToken === '' && refreshToken === '') {
-      console.info('User seems not to be logged in.')
-      return false
+
+    if (peertubeAuthHeader === undefined) { // parameter not given.
+      // We must be in a page without PeertubeHelpers, so we must get authent token manualy.
+      if (!window.localStorage) {
+        // FIXME: is the Peertube token always in localStorage?
+        console.error('Your browser has no localStorage, we cant log you in')
+        return false
+      }
+      const tokenType = window.localStorage.getItem('token_type') ?? ''
+      const accessToken = window.localStorage.getItem('access_token') ?? ''
+      const refreshToken = window.localStorage.getItem('refresh_token') ?? ''
+      if (tokenType === '' && accessToken === '' && refreshToken === '') {
+        console.info('User seems not to be logged in.')
+        return false
+      }
+
+      peertubeAuthHeader = {
+        Authorization: tokenType + ' ' + accessToken
+      }
     }
 
     const response = await window.fetch(authenticationUrl, {
       method: 'GET',
-      headers: new Headers({
-        Authorization: tokenType + ' ' + accessToken,
-        'content-type': 'application/json;charset=UTF-8'
-      })
+      headers: new Headers(
+        Object.assign(
+          {},
+          peertubeAuthHeader,
+          {
+            'content-type': 'application/json;charset=UTF-8'
+          }
+        )
+      )
     })
 
     if (!response.ok) {