diff --git a/analytics.py b/analytics.py
index 87b4346..2a24a85 100644
--- a/analytics.py
+++ b/analytics.py
@@ -727,6 +727,8 @@ def file_access():
     if 'timeframe' not in session:
         session['timeframe'] = 'last24hours'
     session['timeframe'] = request.args.get('timeframe', session['timeframe'])
+    if 'file_access_category' not in session:
+        session['file_access_category'] = None
     
     now = datetime.now()
 
@@ -775,25 +777,56 @@ def file_access():
                 'category': hf.extract_structure_from_string(rel_path)[0]
             })
 
-    # Get possible categories from the rows
-    categories = sorted({r['category'] for r in rows if r['category'] is not None})
-    all_categories = [None] + categories
-    top20 = []
-    for category in all_categories:
-        label = category if category is not None else 'Keine Kategorie gefunden !'
-        files = [r for r in rows if r['category'] == category][:20]
-        top20.append({
-            'category': label,
-            'files': files
+    # Build a list of selectable categories for the dropdown
+    category_options = []
+    has_uncategorized = any(r['category'] is None for r in rows)
+    if has_uncategorized:
+        category_options.append({
+            'value': 'uncategorized',
+            'label': 'Keine Kategorie gefunden !'
         })
 
+    unique_categories = sorted({r['category'] for r in rows if r['category'] is not None})
+    for category in unique_categories:
+        category_options.append({
+            'value': category,
+            'label': category
+        })
+
+    default_category_value = category_options[0]['value'] if category_options else None
+    requested_category = request.args.get('category')
+    stored_category = session.get('file_access_category')
+    selected_category = requested_category or stored_category or default_category_value
+
+    valid_values = {opt['value'] for opt in category_options}
+    if selected_category not in valid_values:
+        selected_category = default_category_value
+
+    session['file_access_category'] = selected_category
+
+    def matches_category(row):
+        if selected_category == 'uncategorized':
+            return row['category'] is None
+        return row['category'] == selected_category
+
+    filtered_rows = [r for r in rows if matches_category(r)] if selected_category is not None else []
+    top20_files = filtered_rows[:20]
+
+    selected_category_label = next(
+        (opt['label'] for opt in category_options if opt['value'] == selected_category),
+        'Keine Daten verfügbar'
+    )
+
     title_short = app_config.get('TITLE_SHORT', 'Default Title')
     title_long  = app_config.get('TITLE_LONG' , 'Default Title')
 
     return render_template(
         "file_access.html",
         timeframe=session['timeframe'],
-        top20 = top20,
+        categories=category_options,
+        selected_category=selected_category,
+        selected_category_label=selected_category_label,
+        top20_files=top20_files,
         admin_enabled=auth.is_admin(),
         title_short=title_short,
         title_long=title_long
diff --git a/templates/file_access.html b/templates/file_access.html
index 78ac21d..ba67461 100644
--- a/templates/file_access.html
+++ b/templates/file_access.html
@@ -34,47 +34,63 @@
           <ul class="dropdown-menu" aria-labelledby="timeframeDropdown">
             <li>
               <a class="dropdown-item {% if session['timeframe'] == 'last24hours' %}active{% endif %}" 
-                href="{{ url_for('file_access', timeframe='last24hours') }}">
+                href="{{ url_for('file_access', timeframe='last24hours', category=selected_category) }}">
                 Last 24 Hours
               </a>
             </li>
             <li>
               <a class="dropdown-item {% if session['timeframe'] == '7days' %}active{% endif %}" 
-                href="{{ url_for('file_access', timeframe='7days') }}">
+                href="{{ url_for('file_access', timeframe='7days', category=selected_category) }}">
                 Last 7 Days
               </a>
             </li>
             <li>
               <a class="dropdown-item {% if session['timeframe'] == '14days' %}active{% endif %}" 
-                href="{{ url_for('file_access', timeframe='14days') }}">
+                href="{{ url_for('file_access', timeframe='14days', category=selected_category) }}">
                 Last 14 Days
               </a>
             </li>
             <li>
               <a class="dropdown-item {% if session['timeframe'] == '30days' %}active{% endif %}" 
-                href="{{ url_for('file_access', timeframe='30days') }}">
+                href="{{ url_for('file_access', timeframe='30days', category=selected_category) }}">
                 Last 30 Days
               </a>
             </li>
             <li>
               <a class="dropdown-item {% if session['timeframe'] == '365days' %}active{% endif %}" 
-                href="{{ url_for('file_access', timeframe='365days') }}">
+                href="{{ url_for('file_access', timeframe='365days', category=selected_category) }}">
                 Last 365 Days
               </a>
             </li>
           </ul>
         </div>
+        <!-- Category Dropdown -->
+        {% if categories %}
+        <div class="dropdown">
+          <button class="btn btn-secondary dropdown-toggle" 
+                  type="button" id="categoryDropdown" data-bs-toggle="dropdown" aria-expanded="false">
+            {{ selected_category_label }}
+          </button>
+          <ul class="dropdown-menu" aria-labelledby="categoryDropdown">
+            {% for option in categories %}
+            <li>
+              <a class="dropdown-item {% if selected_category == option.value %}active{% endif %}" 
+                href="{{ url_for('file_access', timeframe=session['timeframe'], category=option.value) }}">
+                {{ option.label }}
+              </a>
+            </li>
+            {% endfor %}
+          </ul>
+        </div>
+        {% endif %}
       </div>
 
 
       <!-- Detailed Table of Top File Accesses -->
-      {% for top20_item in top20 %}
       <div class="card mb-4">
-        <div class="card-header d-flex justify-content-between align-items-center">
-          <span>{{ top20_item['category'] }}</span>
-          <span class="toggle-icon" aria-label="collapse" role="button" tabindex="0">+</span>
-        </div>
-        <div class="card-body collapsable">
+        <div class="card-header">{{ selected_category_label }}</div>
+        <div class="card-body">
+          {% if top20_files %}
           <div class="table-responsive">
             <table class="table table-striped">
               <thead>
@@ -84,23 +100,20 @@
                 </tr>
               </thead>
               <tbody>
-                {% for row in top20_item['files'] %}
+                {% for row in top20_files %}
                 <tr>
                   <td>{{ row.access_count }}</td>
                   <td>{{ row.rel_path }}</td>
                 </tr>
-                {% else %}
-                <tr>
-                  <td colspan="2">No data available for the selected timeframe.</td>
-                </tr>
                 {% endfor %}
               </tbody>
             </table>
           </div>
+          {% else %}
+          <p class="mb-0">No data available for the selected timeframe and category.</p>
+          {% endif %}
         </div>
       </div>
-      {% endfor %}
     </div>
 {% endblock %}
     
-