diff --git a/Dockerfile b/Dockerfile
index 661bc92..dfbbf45 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -23,5 +23,8 @@ RUN pip3 install --no-cache-dir -r requirements.txt --break-system-packages
 # Öffne den Port des Web-Servers
 EXPOSE 3000
 
+# Setze die Umgebungsvariablen
+ENV ONLY_SHOW_AVAILABLE true
+
 # Starte den Web-Server
 CMD ["node", "server.js"]
\ No newline at end of file
diff --git a/README.md b/README.md
index a49c3b7..053d49b 100644
--- a/README.md
+++ b/README.md
@@ -16,6 +16,7 @@ services:
         ports:
             - 3000:3000
         environment:
+            - 'ONLY_SHOW_AVAILABLE=true' # Optional, default: true (only show available reports in the UI)
             - 'CALDAV_URL=https://example.com/calendars/' # URL to the caldav server
             - 'CALDAV_USER=USERNAME' # Username for the caldav server
             - 'CALDAV_PASSWORD=PASSWORD' # Password for the caldav server
diff --git a/src/server.js b/src/server.js
index ffa1396..0ec4734 100644
--- a/src/server.js
+++ b/src/server.js
@@ -141,6 +141,25 @@ app.get('/newweekavailable', (req, res) => {
     }
 });
 
+app.get('/show', (req, res) => {
+    let showCalendar = true;
+    let showUntis = true;
+    
+    if (process.env.ONLY_SHOW_AVAILABLE == "true") {
+        if (process.env.CALDAV_URL == undefined || process.env.CALDAV_USER == undefined || process.env.CALDAV_PASSWORD == undefined || process.env.CALDAV_CALENDAR == undefined) {
+            showCalendar = false;
+        }
+        if (process.env.UNTIS_SCHOOLS == undefined || process.env.UNTIS_USERNAMES == undefined || process.env.UNTIS_PASSWORDS == undefined || process.env.UNTIS_SERVERS == undefined) {
+            showUntis = false;
+        }
+    }
+    
+    res.send({
+        calendar: showCalendar,
+        untis: showUntis
+    });
+});
+
 // Definiere eine Route für die Ausgabe der Daten
 app.get('/getreport', async (req, res) => {
     const weekDate = last50Weeks[req.query.week];
diff --git a/src/static/index.html b/src/static/index.html
index 29388fb..60dc74f 100644
--- a/src/static/index.html
+++ b/src/static/index.html
@@ -14,17 +14,21 @@
         </select>
         <button id="export-button" onclick="exportReport()">Exportieren</button>
     </div>
-    <div class="ueberschrift">
-        <h4>Kalendereinträge</h4>
-        <button id="calendar-copy-button" onclick="copyToClipboard(calendarcalendarCopyButton, calendarTextarea)">Kopieren</button>
+    <div id="calendar-div">
+        <div class="ueberschrift">
+            <h4>Kalendereinträge</h4>
+            <button id="calendar-copy-button" onclick="copyToClipboard(calendarcalendarCopyButton, calendarTextarea)">Kopieren</button>
+        </div>
+        <textarea id="calendar-textarea"></textarea>
     </div>
-    <textarea id="calendar-textarea"></textarea>
     
-    <div class="ueberschrift">
-        <h4>Untis Einträge</h4>
-        <button id="untis-copy-button" onclick="copyToClipboard(untisCopyButton, untisTextarea)">Kopieren</button>
+    <div id="untis-div">
+        <div class="ueberschrift">
+            <h4>Untis Einträge</h4>
+            <button id="untis-copy-button" onclick="copyToClipboard(untisCopyButton, untisTextarea)">Kopieren</button>
+        </div>
+        <textarea id="untis-textarea"></textarea>
     </div>
-    <textarea id="untis-textarea"></textarea>
     
     <script src="index.js"></script>
 </body>
diff --git a/src/static/index.js b/src/static/index.js
index cb90453..e50f321 100644
--- a/src/static/index.js
+++ b/src/static/index.js
@@ -7,6 +7,27 @@ const untisCopyButton = document.getElementById('untis-copy-button');
 const weekList = document.getElementById('week-list');
 const exportButton = document.getElementById('export-button');
 
+const calendarDiv = document.getElementById('calendar-div');
+const untisDiv = document.getElementById('untis-div');
+
+fetch('/show')
+    .then(response => {
+        if (response.ok) {
+            return response.json();
+        } else {
+            throw new Error('Error während des Abrufs');
+        }
+    }).then(json => {
+        if (json.calendar == false) {
+            calendarDiv.style.display = 'none';
+        }
+        if (json.untis == false) {
+            untisDiv.style.display = 'none';
+        }
+    }).catch(error => {
+        console.error(error);
+    });
+
 function loadWeeks() {
     fetch('/newweekavailable?week=' + weekList.options[0].innerHTML)
         .then(response => {