diff --git a/data/db/slideshow.json.dist b/data/db/slideshow.json.dist
index c2acc4a..7371348 100755
--- a/data/db/slideshow.json.dist
+++ b/data/db/slideshow.json.dist
@@ -6,7 +6,8 @@
     "location",
     "name",
     "position",
-    "type"
+    "type",
+    "cron_schedule"
   ],
   "data": {
     "0": {
@@ -15,7 +16,8 @@
       "type": "picture",
       "enabled": true,
       "name": "Picture Sample",
-      "position": 0
+      "position": 0,
+      "cron_schedule": null
     },
     "1": {
       "location": "https://unix.org",
@@ -23,7 +25,8 @@
       "type": "url",
       "enabled": true,
       "name": "URL Sample",
-      "position": 1
+      "position": 1,
+      "cron_schedule": null
     }
   }
 }
\ No newline at end of file
diff --git a/data/www/css/main.css b/data/www/css/main.css
index 1b4cd4d..ff2f41a 100644
--- a/data/www/css/main.css
+++ b/data/www/css/main.css
@@ -512,6 +512,14 @@ form .form-group textarea {
     width: auto;
 }
 
+form .form-group input[type=checkbox] {
+    flex: 0;
+}
+
+form .form-group input[type=checkbox].trigger {
+    margin-right: 10px;
+}
+
 form .form-group span {
     margin-left: 10px;
 }
diff --git a/data/www/js/slideshow.js b/data/www/js/slideshow.js
index 68bf91f..3cd6ea0 100644
--- a/data/www/js/slideshow.js
+++ b/data/www/js/slideshow.js
@@ -49,7 +49,7 @@ jQuery(document).ready(function ($) {
         });
     };
 
-    $(document).on('change', 'input[type=checkbox]', function () {
+    $(document).on('change', '.slide-item input[type=checkbox]', function () {
         $.ajax({
             url: '/slideshow/slide/toggle',
             headers: {'Content-Type': 'application/json'},
@@ -68,6 +68,16 @@ jQuery(document).ready(function ($) {
         updateTable();
     });
 
+    $(document).on('change', '.modal-slide input[type=checkbox]', function () {
+        const $target = $('#'+ $(this).attr('id').replace('-trigger', ''));
+        const hide = !$(this).is(':checked');
+        $target.toggleClass('hidden', hide);
+
+        if (hide) {
+            $target.val('');
+        }
+    });
+
     $(document).on('change', '#slide-add-type', function () {
         const value = $(this).val();
         const inputType = $(this).find('option').filter(function (i, el) {
@@ -95,11 +105,14 @@ jQuery(document).ready(function ($) {
     $(document).on('click', '.slide-edit', function () {
         const slide = JSON.parse($(this).parents('tr:eq(0)').attr('data-entity'));
         showModal('modal-slide-edit');
+        const hasCron = slide.cron_schedule && slide.cron_schedule.length > 0;
         $('.modal-slide-edit input:visible:eq(0)').focus().select();
         $('#slide-edit-name').val(slide.name);
         $('#slide-edit-type').val(slide.type);
         $('#slide-edit-location').val(slide.location);
         $('#slide-edit-duration').val(slide.duration);
+        $('#slide-edit-cron-schedule').val(slide.cron_schedule).toggleClass('hidden', !hasCron);
+        $('#slide-edit-cron-schedule-trigger').prop('checked', hasCron);
         $('#slide-edit-id').val(slide.id);
     });
 
diff --git a/docs/screenshot.png b/docs/screenshot.png
old mode 100644
new mode 100755
index 0841636..335c218
Binary files a/docs/screenshot.png and b/docs/screenshot.png differ
diff --git a/lang/en.json b/lang/en.json
index 0b4f76d..3c9857f 100644
--- a/lang/en.json
+++ b/lang/en.json
@@ -8,7 +8,10 @@
     "slideshow_slide_panel_th_duration": "Duration",
     "slideshow_slide_panel_th_duration_unit": "sec",
     "slideshow_slide_panel_th_enabled": "Enabled",
+    "slideshow_slide_panel_th_cron_scheduled": "Scheduled",
     "slideshow_slide_panel_th_activity": "Activity",
+    "slideshow_slide_panel_td_cron_scheduled_loop": "Loop",
+    "slideshow_slide_panel_td_cron_scheduled_bad_cron": "Bad cron value",
     "slideshow_slide_form_add_title": "Add Slide",
     "slideshow_slide_form_add_submit": "Add",
     "slideshow_slide_form_edit_title": "Edit Slide",
@@ -22,6 +25,8 @@
     "slideshow_slide_form_label_object": "Object",
     "slideshow_slide_form_label_duration": "Duration",
     "slideshow_slide_form_label_duration_unit": "seconds",
+    "slideshow_slide_form_label_cron_scheduled": "Scheduled",
+    "slideshow_slide_form_widget_cron_scheduled_placeholder": "Use crontab format: * * * * *",
     "slideshow_slide_form_button_cancel": "Cancel",
     "js_slideshow_slide_delete_confirmation": "Are you sure?",
 
diff --git a/lang/fr.json b/lang/fr.json
index 1af5037..1cc575c 100644
--- a/lang/fr.json
+++ b/lang/fr.json
@@ -8,7 +8,10 @@
     "slideshow_slide_panel_th_duration": "Durée",
     "slideshow_slide_panel_th_duration_unit": "sec",
     "slideshow_slide_panel_th_enabled": "Activé",
+    "slideshow_slide_panel_th_cron_scheduled": "Programmation",
     "slideshow_slide_panel_th_activity": "Options",
+    "slideshow_slide_panel_td_cron_scheduled_loop": "En boucle",
+    "slideshow_slide_panel_td_cron_scheduled_bad_cron": "Mauvaise valeur cron",
     "slideshow_slide_form_add_title": "Ajouter d'une slide",
     "slideshow_slide_form_add_submit": "Ajouter",
     "slideshow_slide_form_edit_title": "Modification d'une slide",
@@ -22,6 +25,8 @@
     "slideshow_slide_form_label_object": "Objet",
     "slideshow_slide_form_label_duration": "Durée",
     "slideshow_slide_form_label_duration_unit": "secondes",
+    "slideshow_slide_form_label_cron_scheduled": "Programmer",
+    "slideshow_slide_form_widget_cron_scheduled_placeholder": "Utiliser le format crontab: * * * * *",
     "slideshow_slide_form_button_cancel": "Annuler",
     "js_slideshow_slide_delete_confirmation": "Êtes-vous sûr ?",
 
diff --git a/requirements.txt b/requirements.txt
index 70ccd58..7460098 100755
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 flask==2.3.3
 pysondb-v2==2.1.0
 python-dotenv
-croniter
+cron-descriptor
 
diff --git a/src/controller/SlideshowController.py b/src/controller/SlideshowController.py
index 259aa3b..5c82f2a 100644
--- a/src/controller/SlideshowController.py
+++ b/src/controller/SlideshowController.py
@@ -8,7 +8,7 @@ from src.service.ModelStore import ModelStore
 from src.model.entity.Slide import Slide
 from src.model.enum.SlideType import SlideType
 from src.interface.ObController import ObController
-from src.utils import str_to_enum
+from src.utils import str_to_enum, get_optional_string
 
 
 class SlideshowController(ObController):
@@ -40,6 +40,7 @@ class SlideshowController(ObController):
             name=request.form['name'],
             type=str_to_enum(request.form['type'], SlideType),
             duration=request.form['duration'],
+            cron_schedule=get_optional_string(request.form['cron_schedule']),
         )
 
         if slide.has_file():
@@ -65,7 +66,7 @@ class SlideshowController(ObController):
         return redirect(url_for('slideshow_slide_list'))
 
     def slideshow_slide_edit(self):
-        self._model_store.slide().update_form(request.form['id'], request.form['name'], request.form['duration'])
+        self._model_store.slide().update_form(request.form['id'], request.form['name'], request.form['duration'], request.form['cron_schedule'])
         self._post_update()
         return redirect(url_for('slideshow_slide_list'))
 
diff --git a/src/manager/LangManager.py b/src/manager/LangManager.py
index 7aca3f9..1db0dbe 100644
--- a/src/manager/LangManager.py
+++ b/src/manager/LangManager.py
@@ -8,7 +8,7 @@ class LangManager:
 
     def __init__(self, lang: str):
         self._map = {}
-        self._lang = lang
+        self._lang = lang.lower()
         self.load()
 
     def load(self, directory: str = "", prefix: str = ""):
@@ -23,3 +23,6 @@ class LangManager:
 
     def map(self) -> dict:
         return self._map
+
+    def get_locale(self, local_with_country: bool = False) -> str:
+        return "{}_{}".format(self._lang, self._lang.upper()) if local_with_country else self._lang
\ No newline at end of file
diff --git a/src/manager/SlideManager.py b/src/manager/SlideManager.py
index 7944af9..31fa397 100644
--- a/src/manager/SlideManager.py
+++ b/src/manager/SlideManager.py
@@ -2,7 +2,7 @@ import os
 
 from typing import Dict, Optional, List, Tuple, Union
 from src.model.entity.Slide import Slide
-from src.utils import str_to_enum
+from src.utils import str_to_enum, get_optional_string
 from pysondb import PysonDB
 from pysondb.errors import IdDoesNotExistError
 
@@ -69,8 +69,12 @@ class SlideManager:
         for slide_id, slide_position in positions.items():
             self._db.update_by_id(slide_id, {"position": slide_position})
 
-    def update_form(self, id: str, name: str, duration: int) -> None:
-        self._db.update_by_id(id, {"name": name, "duration": duration})
+    def update_form(self, id: str, name: str, duration: int, cron_schedule: Optional[str] = '') -> None:
+        self._db.update_by_id(id, {
+            "name": name,
+            "duration": duration,
+            "cron_schedule": get_optional_string(cron_schedule)
+        })
 
     def add_form(self, slide: Union[Slide, Dict]) -> None:
         db_slide = slide
diff --git a/src/model/entity/Slide.py b/src/model/entity/Slide.py
index 0f2059d..3ba35cd 100644
--- a/src/model/entity/Slide.py
+++ b/src/model/entity/Slide.py
@@ -7,14 +7,14 @@ from src.utils import str_to_enum
 
 class Slide:
 
-    def __init__(self, location: str = '', duration: int = 3, type: Union[SlideType, str] = SlideType.URL, enabled: bool = False, name: str = 'Untitled', position: int = 999, id: Optional[str] = None, cron_schedule: str = ''):
+    def __init__(self, location: str = '', duration: int = 3, type: Union[SlideType, str] = SlideType.URL, enabled: bool = False, name: str = 'Untitled', position: int = 999, id: Optional[str] = None, cron_schedule: Optional[str] = None):
         self._id = id if id else None
         self._location = location
         self._duration = duration
         self._type = str_to_enum(type, SlideType) if isinstance(type, str) else type
         self._enabled = enabled
         self._name = name
-        self._position = position,
+        self._position = position
         self._cron_schedule = cron_schedule
 
     @property
@@ -38,11 +38,11 @@ class Slide:
         self._type = value
 
     @property
-    def cron_schedule(self) -> str:
+    def cron_schedule(self) -> Optional[str]:
         return self._cron_schedule
 
     @cron_schedule.setter
-    def cron_schedule(self, value: str):
+    def cron_schedule(self, value: Optional[str]):
         self._cron_schedule = value
 
     @property
diff --git a/src/service/TemplateRenderer.py b/src/service/TemplateRenderer.py
index 6146242..97d47b2 100644
--- a/src/service/TemplateRenderer.py
+++ b/src/service/TemplateRenderer.py
@@ -1,6 +1,8 @@
 import os
 
 from flask import Flask, send_from_directory, Markup
+from cron_descriptor import ExpressionDescriptor
+from cron_descriptor.Exception import FormatException, WrongArgumentException, MissingFieldException
 from typing import List
 from jinja2 import Environment, FileSystemLoader, select_autoescape
 from src.service.ModelStore import ModelStore
@@ -18,6 +20,22 @@ class TemplateRenderer:
         self._model_store = model_store
         self._render_hook = render_hook
 
+    def cron_descriptor(self, expression: str, use_24hour_time_format=True) -> str:
+        try:
+            return str(
+                ExpressionDescriptor(
+                    expression=expression,
+                    use_24hour_time_format=use_24hour_time_format,
+                    locale_code=self._model_store.lang().get_locale(local_with_country=True)
+                )
+            )
+        except FormatException:
+            return ''
+        except WrongArgumentException:
+            return ''
+        except MissingFieldException:
+            return ''
+
     def get_view_globals(self) -> dict:
         globals = dict(
             STATIC_PREFIX="/{}/{}/".format(WebDirConstant.FOLDER_STATIC, WebDirConstant.FOLDER_STATIC_WEB_ASSETS),
@@ -25,6 +43,7 @@ class TemplateRenderer:
             VERSION=self._model_store.config().map().get('version'),
             LANG=self._model_store.variable().map().get('lang').as_string(),
             HOOK=self._render_hook,
+            cron_descriptor=self.cron_descriptor
         )
 
         for hook in HookType:
diff --git a/src/service/WebServer.py b/src/service/WebServer.py
index 04c3aa0..f4b4948 100644
--- a/src/service/WebServer.py
+++ b/src/service/WebServer.py
@@ -33,7 +33,6 @@ class WebServer:
     def setup(self) -> None:
         self._setup_flask_app()
         self._setup_web_globals()
-        self._setup_web_extensions()
         self._setup_web_errors()
         self._setup_web_controllers()
 
@@ -73,12 +72,8 @@ class WebServer:
         def inject_global_vars() -> dict:
             return self._template_renderer.get_view_globals()
 
-    def _setup_web_extensions(self) -> None:
-        @self._app.template_filter('ctime')
-        def time_ctime(s):
-            return time.ctime(s)
-
     def _setup_web_errors(self) -> None:
         @self._app.errorhandler(404)
         def not_found(e):
             return send_from_directory(self._get_template_folder(), 'core/error404.html'), 404
+
diff --git a/src/utils.py b/src/utils.py
index 48720c7..992c8f1 100644
--- a/src/utils.py
+++ b/src/utils.py
@@ -6,6 +6,17 @@ from typing import Optional, List
 from enum import Enum
 
 
+def get_optional_string(var: Optional[str]) -> Optional[str]:
+    if var is None:
+        return None
+
+    var = var.strip()
+
+    if var:
+        return var
+
+    return None
+
 def get_keys(dict_or_object, key_list_name: str, key_attr_name: str = 'key') -> Optional[List]:
     if dict_or_object is None:
         return None
diff --git a/views/slideshow/component/table.jinja.html b/views/slideshow/component/table.jinja.html
index 443b9d6..f6abb29 100644
--- a/views/slideshow/component/table.jinja.html
+++ b/views/slideshow/component/table.jinja.html
@@ -4,6 +4,7 @@
         <th>{{ l.slideshow_slide_panel_th_name }}</th>
         <th class="tac">{{ l.slideshow_slide_panel_th_duration }}</th>
         <th class="tac">{{ l.slideshow_slide_panel_th_enabled }}</th>
+        <th class="">{{ l.slideshow_slide_panel_th_cron_scheduled }}</th>
         <th class="tac">{{ l.slideshow_slide_panel_th_activity }}</th>
     </tr>
     </thead>
@@ -42,6 +43,18 @@
                     <input type="checkbox" {% if slide.enabled %}checked="checked"{% endif %}><span></span>
                 </label>
             </td>
+            <td class="">
+                {% if slide.cron_schedule %}
+                    {% set cron_desc = cron_descriptor(slide.cron_schedule)  %}
+                    {% if cron_desc %}
+                        ⏳ {{ cron_desc }}
+                    {% else %}
+                        <span class="error">⚠️ {{ l.slideshow_slide_panel_td_cron_scheduled_bad_cron }}</span>
+                    {% endif %}
+                {% else %}
+                    🔄 {{ l.slideshow_slide_panel_td_cron_scheduled_loop }}
+                {% endif %}
+            </td>
             <td class="actions tac">
                 <a href="javascript:void(0);" class="item-edit slide-edit">
                     <i class="fa fa-pencil"></i>
diff --git a/views/slideshow/modal/add.jinja.html b/views/slideshow/modal/add.jinja.html
index 4e066a0..41859b1 100644
--- a/views/slideshow/modal/add.jinja.html
+++ b/views/slideshow/modal/add.jinja.html
@@ -1,4 +1,4 @@
-<div class="modal modal-slide-add">
+<div class="modal modal-slide-add modal-slide">
     <h2>
         {{ l.slideshow_slide_form_add_title }}
     </h2>
@@ -38,6 +38,14 @@
             </div>
         </div>
 
+         <div class="form-group">
+            <label for="slide-add-cron-schedule">{{ l.slideshow_slide_form_label_cron_scheduled }}</label>
+            <div class="widget">
+                <input type="checkbox" id="slide-add-cron-schedule-trigger" class="trigger" />
+                <input type="text" name="cron_schedule" id="slide-add-cron-schedule" placeholder="{{ l.slideshow_slide_form_widget_cron_scheduled_placeholder }}" class="hidden" />
+            </div>
+        </div>
+
         <div class="actions">
             <button type="button" class="modal-close">
                 {{ l.slideshow_slide_form_button_cancel }}
diff --git a/views/slideshow/modal/edit.jinja.html b/views/slideshow/modal/edit.jinja.html
index 564f6d9..4e170b4 100644
--- a/views/slideshow/modal/edit.jinja.html
+++ b/views/slideshow/modal/edit.jinja.html
@@ -1,4 +1,4 @@
-<div class="modal modal-slide-edit hidden">
+<div class="modal modal-slide-edit modal-slide hidden">
     <h2>
         {{ l.slideshow_slide_form_edit_submit }}
     </h2>
@@ -38,6 +38,14 @@
             </div>
         </div>
 
+        <div class="form-group">
+            <label for="slide-edit-cron-schedule">{{ l.slideshow_slide_form_label_cron_scheduled }}</label>
+            <div class="widget">
+                <input type="checkbox" id="slide-edit-cron-schedule-trigger" class="trigger" />
+                <input type="text" name="cron_schedule" id="slide-edit-cron-schedule" placeholder="{{ l.slideshow_slide_form_widget_cron_scheduled_placeholder }}" class="hidden" />
+            </div>
+        </div>
+
         <div class="actions">
             <button type="button" class="modal-close">
                 {{ l.slideshow_slide_form_button_cancel }}