diff --git a/bin/lib/Language.py b/bin/lib/Language.py
index e413c434..dd8df1c2 100755
--- a/bin/lib/Language.py
+++ b/bin/lib/Language.py
@@ -4,6 +4,20 @@
 import os
 import sys
 
+import cld3
+from libretranslatepy import LibreTranslateAPI
+
+sys.path.append(os.environ['AIL_BIN'])
+##################################
+# Import Project packages
+##################################
+from lib.ConfigLoader import ConfigLoader
+
+config_loader = ConfigLoader()
+TRANSLATOR_URL = config_loader.get_config_str('Translation', 'libretranslate')
+config_loader = None
+
+
 dict_iso_languages = {
     'af': 'Afrikaans',
     'am': 'Amharic',
@@ -237,3 +251,77 @@ def get_iso_from_languages(l_languages, sort=False):
     if sort:
         l_iso = sorted(l_iso)
     return l_iso
+
+
+class LanguageDetector:
+    pass
+
+def get_translator_instance():
+    return TRANSLATOR_URL
+
+class LanguageTranslator:
+
+    def __init__(self):
+        self.lt = LibreTranslateAPI(get_translator_instance())
+
+    def languages(self):
+        languages = []
+        try:
+            for dict_lang in self.lt.languages():
+                languages.append({'iso': dict_lang['code'], 'language': dict_lang['name']})
+        except:
+            pass
+        return languages
+
+    def detect_cld3(self, content):
+        for lang in cld3.get_frequent_languages(content, num_langs=1):
+            return lang.language
+
+    def detect_libretranslate(self, content):
+        try:
+            language = self.lt.detect(content)
+        except:  # TODO ERROR MESSAGE
+            language = None
+        if language:
+            return language[0].get('language')
+
+    def detect(self, content):  # TODO replace by gcld3
+        # cld3
+        if len(content) >= 200:
+            language = self.detect_cld3(content)
+        # libretranslate
+        else:
+            language = self.detect_libretranslate(content)
+        return language
+
+    def translate(self, content, source=None, target="en"):  # TODO source target
+        translation = None
+        if content:
+            if not source:
+                source = self.detect(content)
+            # print(source, content)
+            if source:
+                if source != target:
+                    try:
+                        # print(content, source, target)
+                        translation = self.lt.translate(content, source, target)
+                    except:
+                        translation = None
+                    # TODO LOG and display error
+                    if translation == content:
+                        print('EQUAL')
+                        translation = None
+        return translation
+
+
+LIST_LANGUAGES = LanguageTranslator().languages()
+
+def get_translation_languages():
+    return LIST_LANGUAGES
+
+
+if __name__ == '__main__':
+    t_content = ''
+    langg = LanguageTranslator()
+    # lang.translate(t_content, source='ru')
+    langg.languages()
diff --git a/bin/lib/chats_viewer.py b/bin/lib/chats_viewer.py
index 2740e6ca..1d983f0a 100755
--- a/bin/lib/chats_viewer.py
+++ b/bin/lib/chats_viewer.py
@@ -21,6 +21,7 @@ from lib.objects import Chats
 from lib.objects import ChatSubChannels
 from lib.objects import ChatThreads
 from lib.objects import Messages
+from lib.objects import UsersAccount
 from lib.objects import Usernames
 
 config_loader = ConfigLoader()
@@ -307,7 +308,7 @@ def api_get_chat_service_instance(chat_instance_uuid):
         return {"status": "error", "reason": "Unknown uuid"}, 404
     return chat_instance.get_meta({'chats'}), 200
 
-def api_get_chat(chat_id, chat_instance_uuid):
+def api_get_chat(chat_id, chat_instance_uuid, translation_target=None):
     chat = Chats.Chat(chat_id, chat_instance_uuid)
     if not chat.exists():
         return {"status": "error", "reason": "Unknown chat"}, 404
@@ -317,7 +318,7 @@ def api_get_chat(chat_id, chat_instance_uuid):
     if meta['subchannels']:
         meta['subchannels'] = get_subchannels_meta_from_global_id(meta['subchannels'])
     else:
-        meta['messages'], meta['tags_messages'] = chat.get_messages()
+        meta['messages'], meta['tags_messages'] = chat.get_messages(translation_target=translation_target)
     return meta, 200
 
 def api_get_nb_message_by_week(chat_id, chat_instance_uuid):
@@ -328,7 +329,7 @@ def api_get_nb_message_by_week(chat_id, chat_instance_uuid):
     # week = chat.get_nb_message_by_week('20231109')
     return week, 200
 
-def api_get_subchannel(chat_id, chat_instance_uuid):
+def api_get_subchannel(chat_id, chat_instance_uuid, translation_target=None):
     subchannel = ChatSubChannels.ChatSubChannel(chat_id, chat_instance_uuid)
     if not subchannel.exists():
         return {"status": "error", "reason": "Unknown subchannel"}, 404
@@ -339,17 +340,17 @@ def api_get_subchannel(chat_id, chat_instance_uuid):
         meta['threads'] = get_threads_metas(meta['threads'])
     if meta.get('username'):
         meta['username'] = get_username_meta_from_global_id(meta['username'])
-    meta['messages'], meta['tags_messages'] = subchannel.get_messages()
+    meta['messages'], meta['tags_messages'] = subchannel.get_messages(translation_target=translation_target)
     return meta, 200
 
-def api_get_thread(thread_id, thread_instance_uuid):
+def api_get_thread(thread_id, thread_instance_uuid, translation_target=None):
     thread = ChatThreads.ChatThread(thread_id, thread_instance_uuid)
     if not thread.exists():
         return {"status": "error", "reason": "Unknown thread"}, 404
     meta = thread.get_meta({'chat', 'nb_messages'})
     # if meta['chat']:
     #     meta['chat'] = get_chat_meta_from_global_id(meta['chat'])
-    meta['messages'], meta['tags_messages'] = thread.get_messages()
+    meta['messages'], meta['tags_messages'] = thread.get_messages(translation_target=translation_target)
     return meta, 200
 
 def api_get_message(message_id):
@@ -362,6 +363,14 @@ def api_get_message(message_id):
     #     # meta['chat'] =
     return meta, 200
 
+def api_get_user_account(user_id, instance_uuid):
+    user_account = UsersAccount.UserAccount(user_id, instance_uuid)
+    if not user_account.exists():
+        return {"status": "error", "reason": "Unknown user-account"}, 404
+    meta = user_account.get_meta({'icon', 'username'})
+    print(meta)
+    return meta, 200
+
 # # # # # # # # # # LATER
 #                 #
 #   ChatCategory  #
diff --git a/bin/lib/objects/Messages.py b/bin/lib/objects/Messages.py
index 6fb1bb35..e8d422fd 100755
--- a/bin/lib/objects/Messages.py
+++ b/bin/lib/objects/Messages.py
@@ -18,6 +18,7 @@ sys.path.append(os.environ['AIL_BIN'])
 from lib.ail_core import get_ail_uuid
 from lib.objects.abstract_object import AbstractObject
 from lib.ConfigLoader import ConfigLoader
+from lib import Language
 from lib.objects import UsersAccount
 from lib.data_retention_engine import update_obj_date, get_obj_date_first
 # TODO Set all messages ???
@@ -76,7 +77,13 @@ class Message(AbstractObject):
         """
         Returns content
         """
-        content = self._get_field('content')
+        global_id = self.get_global_id()
+        content = r_cache.get(f'content:{global_id}')
+        if not content:
+            content = self._get_field('content')
+            if content:
+                r_cache.set(f'content:{global_id}', content)
+                r_cache.expire(f'content:{global_id}', 300)
         if r_type == 'str':
             return content
         elif r_type == 'bytes':
@@ -153,11 +160,23 @@ class Message(AbstractObject):
     # message from channel ???
     # message media
 
-    def get_translation(self):  # TODO support multiple translated languages ?????
+    def get_translation(self, content=None, source=None, target='fr'):
         """
         Returns translated content
         """
-        return self._get_field('translated')  # TODO multiples translation ... -> use set
+        # return self._get_field('translated')
+        global_id = self.get_global_id()
+        translation = r_cache.get(f'translation:{target}:{global_id}')
+        r_cache.expire(f'translation:{target}:{global_id}', 0)
+        if translation:
+            return translation
+        if not content:
+            content = self.get_content()
+        translation = Language.LanguageTranslator().translate(content, source=source, target=target)
+        if translation:
+            r_cache.set(f'translation:{target}:{global_id}', translation)
+            r_cache.expire(f'translation:{target}:{global_id}', 300)
+        return translation
 
     def _set_translation(self, translation):
         """
@@ -209,7 +228,7 @@ class Message(AbstractObject):
     #     return r_object.hget(f'meta:item::{self.id}', 'url')
 
     # options: set of optional meta fields
-    def get_meta(self, options=None, timestamp=None):
+    def get_meta(self, options=None, timestamp=None, translation_target='en'):
         """
         :type options: set
         :type timestamp: float
@@ -239,7 +258,7 @@ class Message(AbstractObject):
                 parent_type, _, parent_id = meta['parent'].split(':', 3)
                 if parent_type == 'message':
                     message = Message(parent_id)
-                    meta['reply_to'] = message.get_meta(options=options)
+                    meta['reply_to'] = message.get_meta(options=options, translation_target=translation_target)
         if 'investigations' in options:
             meta['investigations'] = self.get_investigations()
         if 'link' in options:
@@ -262,6 +281,8 @@ class Message(AbstractObject):
             meta['files-names'] = self.get_files_names()
         if 'reactions' in options:
             meta['reactions'] = self.get_reactions()
+        if 'translation' in options and translation_target:
+            meta['translation'] = self.get_translation(content=meta.get('content'), target=translation_target)
 
         # meta['encoding'] = None
         return meta
diff --git a/bin/lib/objects/abstract_chat_object.py b/bin/lib/objects/abstract_chat_object.py
index be25eecb..2ae5ab56 100755
--- a/bin/lib/objects/abstract_chat_object.py
+++ b/bin/lib/objects/abstract_chat_object.py
@@ -179,12 +179,12 @@ class AbstractChatObject(AbstractSubtypeObject, ABC):
         week_date = Date.get_current_week_day()
         return self.get_nb_message_by_week(week_date)
 
-    def get_message_meta(self, message, timestamp=None):  # TODO handle file message
+    def get_message_meta(self, message, timestamp=None, translation_target='en'):  # TODO handle file message
         message = Messages.Message(message[9:])
-        meta = message.get_meta(options={'content', 'files-names', 'images', 'link', 'parent', 'parent_meta', 'reactions', 'thread', 'user-account'}, timestamp=timestamp)
+        meta = message.get_meta(options={'content', 'files-names', 'images', 'link', 'parent', 'parent_meta', 'reactions', 'thread', 'translation', 'user-account'}, timestamp=timestamp, translation_target=translation_target)
         return meta
 
-    def get_messages(self, start=0, page=1, nb=500, unread=False):  # threads ???? # TODO ADD last/first message timestamp + return page
+    def get_messages(self, start=0, page=1, nb=500, unread=False, translation_target='en'):  # threads ???? # TODO ADD last/first message timestamp + return page
         # TODO return message meta
         tags = {}
         messages = {}
@@ -195,7 +195,7 @@ class AbstractChatObject(AbstractSubtypeObject, ABC):
             if date_day != curr_date:
                 messages[date_day] = []
                 curr_date = date_day
-            mess_dict = self.get_message_meta(message[0], timestamp=timestamp)
+            mess_dict = self.get_message_meta(message[0], timestamp=timestamp, translation_target=translation_target)
             messages[date_day].append(mess_dict)
 
             if mess_dict.get('tags'):
diff --git a/configs/core.cfg.sample b/configs/core.cfg.sample
index 105fdc74..d152578b 100644
--- a/configs/core.cfg.sample
+++ b/configs/core.cfg.sample
@@ -262,6 +262,9 @@ default_har = True
 default_screenshot = True
 onion_proxy = onion.foundation
 
+[Translation]
+libretranslate = 
+
 [IP]
 # list of comma-separated CIDR that you wish to be alerted for. e.g:
 #networks = 192.168.34.0/24,10.0.0.0/8,192.168.33.0/24
diff --git a/var/www/blueprints/chats_explorer.py b/var/www/blueprints/chats_explorer.py
index 925efacd..9e488273 100644
--- a/var/www/blueprints/chats_explorer.py
+++ b/var/www/blueprints/chats_explorer.py
@@ -21,6 +21,7 @@ sys.path.append(os.environ['AIL_BIN'])
 ##################################
 from lib import ail_core
 from lib import chats_viewer
+from lib import Language
 from lib import Tag
 
 # ============ BLUEPRINT ============
@@ -80,12 +81,14 @@ def chats_explorer_instance():
 def chats_explorer_chat():
     chat_id = request.args.get('id')
     instance_uuid = request.args.get('uuid')
-    chat = chats_viewer.api_get_chat(chat_id, instance_uuid)
+    target = request.args.get('target')
+    chat = chats_viewer.api_get_chat(chat_id, instance_uuid, translation_target=target)
     if chat[1] != 200:
         return create_json_response(chat[0], chat[1])
     else:
         chat = chat[0]
-        return render_template('chat_viewer.html', chat=chat, bootstrap_label=bootstrap_label)
+        languages = Language.get_translation_languages()
+        return render_template('chat_viewer.html', chat=chat, bootstrap_label=bootstrap_label, translation_languages=languages, translation_target=target)
 
 @chats_explorer.route("chats/explorer/messages/stats/week", methods=['GET'])
 @login_required
@@ -105,12 +108,14 @@ def chats_explorer_messages_stats_week():
 def objects_subchannel_messages():
     subchannel_id = request.args.get('id')
     instance_uuid = request.args.get('uuid')
-    subchannel = chats_viewer.api_get_subchannel(subchannel_id, instance_uuid)
+    target = request.args.get('target')
+    subchannel = chats_viewer.api_get_subchannel(subchannel_id, instance_uuid, translation_target=target)
     if subchannel[1] != 200:
         return create_json_response(subchannel[0], subchannel[1])
     else:
         subchannel = subchannel[0]
-        return render_template('SubChannelMessages.html', subchannel=subchannel, bootstrap_label=bootstrap_label)
+        languages = Language.get_translation_languages()
+        return render_template('SubChannelMessages.html', subchannel=subchannel, bootstrap_label=bootstrap_label, translation_languages=languages, translation_target=target)
 
 @chats_explorer.route("/chats/explorer/thread", methods=['GET'])
 @login_required
@@ -118,12 +123,14 @@ def objects_subchannel_messages():
 def objects_thread_messages():
     thread_id = request.args.get('id')
     instance_uuid = request.args.get('uuid')
-    thread = chats_viewer.api_get_thread(thread_id, instance_uuid)
+    target = request.args.get('target')
+    thread = chats_viewer.api_get_thread(thread_id, instance_uuid, translation_target=target)
     if thread[1] != 200:
         return create_json_response(thread[0], thread[1])
     else:
         meta = thread[0]
-        return render_template('ThreadMessages.html', meta=meta, bootstrap_label=bootstrap_label)
+        languages = Language.get_translation_languages()
+        return render_template('ThreadMessages.html', meta=meta, bootstrap_label=bootstrap_label, translation_languages=languages, translation_target=target)
 
 @chats_explorer.route("/objects/message", methods=['GET'])
 @login_required
@@ -135,5 +142,6 @@ def objects_message():
         return create_json_response(message[0], message[1])
     else:
         message = message[0]
+        languages = Language.get_translation_languages()
         return render_template('ChatMessage.html', meta=message, bootstrap_label=bootstrap_label,
                                modal_add_tags=Tag.get_modal_add_tags(message['id'], object_type='message'))
diff --git a/var/www/templates/chats_explorer/SubChannelMessages.html b/var/www/templates/chats_explorer/SubChannelMessages.html
index 3b807b96..f9d42e5b 100644
--- a/var/www/templates/chats_explorer/SubChannelMessages.html
+++ b/var/www/templates/chats_explorer/SubChannelMessages.html
@@ -184,6 +184,9 @@
                 <span class="mt-3">
                     {% include 'objects/image/block_blur_img_slider.html' %}
                 </span>
+                {% with translate_url=url_for('chats_explorer.objects_subchannel_messages', uuid=subchannel['subtype']), obj_id=subchannel['id'] %}
+                    {% include 'chats_explorer/block_translation.html' %}
+                {% endwith %}
 
                 <div class="position-relative">
                     <div class="chat-messages p-2">
diff --git a/var/www/templates/chats_explorer/ThreadMessages.html b/var/www/templates/chats_explorer/ThreadMessages.html
index 1e8e588e..be4f854b 100644
--- a/var/www/templates/chats_explorer/ThreadMessages.html
+++ b/var/www/templates/chats_explorer/ThreadMessages.html
@@ -133,6 +133,9 @@
                 <span class="mt-3">
                     {% include 'objects/image/block_blur_img_slider.html' %}
                 </span>
+                {% with translate_url=url_for('chats_explorer.objects_thread_messages', uuid=meta['subtype']), obj_id=meta['id'] %}
+                    {% include 'chats_explorer/block_translation.html' %}
+                {% endwith %}
 
                 <div class="position-relative">
                     <div class="chat-messages p-2">
diff --git a/var/www/templates/chats_explorer/block_message.html b/var/www/templates/chats_explorer/block_message.html
index 019de791..1a60814c 100644
--- a/var/www/templates/chats_explorer/block_message.html
+++ b/var/www/templates/chats_explorer/block_message.html
@@ -48,6 +48,10 @@
                     {% endif %}
                 </div>
                 <pre class="my-0">{{ message['reply_to']['content'] }}</pre>
+                {% if message['reply_to']['translation'] %}
+                    <hr class="m-1">
+                    <div class="my-0 text-secondary">{{ message['reply_to']['translation'] }}</div>
+                {% endif %}
                 {% for tag in message['reply_to']['tags'] %}
                     <span class="badge badge-{{ bootstrap_label[loop.index0 % 5] }}">{{ tag }}</span>
                 {%  endfor %}
@@ -71,6 +75,10 @@
             {%  endfor %}
         {% endif %}
         <pre class="my-0">{{ message['content'] }}</pre>
+        {% if message['translation'] %}
+            <hr class="m-1">
+            <pre class="my-0 text-secondary">{{ message['translation'] }}</pre>
+        {% endif %}
         {% for reaction in message['reactions'] %}
             <span class="border rounded px-1">{{ reaction }} {{ message['reactions'][reaction] }}</span>
         {%  endfor %}
diff --git a/var/www/templates/chats_explorer/block_translation.html b/var/www/templates/chats_explorer/block_translation.html
new file mode 100644
index 00000000..84749798
--- /dev/null
+++ b/var/www/templates/chats_explorer/block_translation.html
@@ -0,0 +1,37 @@
+<div class="card border-secondary">
+    <div class="card-body py-2">
+        <div class="row">
+            <div class="col-md-3 text-center px-0">
+                Translation
+            </div>
+            <div class="col-md-6 text-center pl-0 pt-1">
+                <select id="translation_selector_target" class="form-select" aria-label="Default select example">
+                    {% if not translation_target or translation_target == "Don't Translate" %}
+                        <option selected>Don't Translate</option>
+                    {% else %}
+                        <option selected value="{{ translation_target }}">{{ translation_target }}</option>
+                    {% endif %}
+                    {% for language in translation_languages %}
+                        <option value="{{ language['iso'] }}">{{ language['language'] }}</option>
+                    {% endfor %}
+                </select>
+            </div>
+            <div class="col-md-3 text-center">
+                <button class="btn btn-sm btn-primary" onclick="translate_selector();">
+                    <i class="fas fa-language"></i>
+                    <span class="label-icon">Translate</span>
+                </button>
+            </div>
+        </div>
+    </div>
+</div>
+
+
+
+<script>
+function translate_selector(){
+    var t = document.getElementById("translation_selector_target");
+    var target = t.value
+    window.location.replace("{{ translate_url }}&id={{ obj_id }}&target=" + target);
+}
+</script>
\ No newline at end of file
diff --git a/var/www/templates/chats_explorer/chat_viewer.html b/var/www/templates/chats_explorer/chat_viewer.html
index 9741fdce..51023081 100644
--- a/var/www/templates/chats_explorer/chat_viewer.html
+++ b/var/www/templates/chats_explorer/chat_viewer.html
@@ -159,6 +159,10 @@
                         {% include 'objects/image/block_blur_img_slider.html' %}
                     </span>
 
+                    {% with translate_url=url_for('chats_explorer.chats_explorer_chat', uuid=chat['subtype']), obj_id=chat['id'] %}
+                        {% include 'chats_explorer/block_translation.html' %}
+                    {% endwith %}
+
                     <div class="position-relative">
                         <div class="chat-messages p-2">