diff --git a/app.py b/app.py
index ef2d5c6..13d8ab5 100644
--- a/app.py
+++ b/app.py
@@ -13,7 +13,9 @@ from flask import Flask, render_template, request, jsonify, redirect, url_for, s
 from fpdf import FPDF
 
 app = Flask(__name__)
+app.config['MAX_CONTENT_LENGTH'] = 5 * 1024 * 1024
 CONFIG_FILE = 'druckkalkulation_config.yaml'
+LOGO_FILE = 'static/logo.png'
 
 DEFAULT_VALUES = {
     'projektName': '',
@@ -42,6 +44,7 @@ DEFAULT_VALUES = {
     'paypal': '',
     'iban': '',
     'bankName': '',
+    'logo': '',
 }
 
 
@@ -163,6 +166,32 @@ def save_config_route():
     return jsonify({'status': 'ok'})
 
 
+@app.route('/upload_logo', methods=['POST'])
+def upload_logo():
+    """Logo-Datei hochladen und in static/logo.png speichern."""
+    if 'logo' not in request.files:
+        return jsonify({'error': 'Keine Datei'}), 400
+    file = request.files['logo']
+    if file.filename == '':
+        return jsonify({'error': 'Keine Datei ausgewaehlt'}), 400
+    file.save(LOGO_FILE)
+    config = load_config()
+    config['logo'] = 'logo.png'
+    save_config(config)
+    return jsonify({'status': 'ok', 'filename': 'logo.png'})
+
+
+@app.route('/delete_logo', methods=['POST'])
+def delete_logo():
+    """Logo loeschen."""
+    if os.path.exists(LOGO_FILE):
+        os.remove(LOGO_FILE)
+    config = load_config()
+    config['logo'] = ''
+    save_config(config)
+    return jsonify({'status': 'ok'})
+
+
 @app.route('/invoice')
 def invoice():
     """Rechnungsseite mit Kundendaten und Vorschau."""
@@ -221,19 +250,17 @@ def invoice_pdf():
         pdf.set_x(left)
         pdf.cell(col_w, 4, " | ".join(contact_parts), ln=True)
 
-    # Logo rechts
-    pdf.set_font("Arial", "B", 22)
-    pdf.set_xy(col_right, 15)
-    y_logo = pdf.get_y()
-
-    line1 = "JET"
-    line2 = "Design"
-    pdf.set_xy(col_right, y_logo)
-    pdf.set_text_color(6, 111, 209)
-    pdf.cell(col_w, 8, line1, ln=True, align='R')
-    pdf.set_x(col_right)
-    pdf.cell(col_w, 8, line2, ln=True, align='R')
-    pdf.set_text_color(0, 0, 0)
+    # Logo rechts (Bild oder Text-Fallback)
+    if os.path.exists(LOGO_FILE):
+        pdf.image(LOGO_FILE, x=col_right, y=15, w=60)
+    else:
+        pdf.set_font("Arial", "B", 22)
+        pdf.set_xy(col_right, 15)
+        pdf.set_text_color(6, 111, 209)
+        pdf.cell(col_w, 8, "JET", ln=True, align='R')
+        pdf.set_x(col_right)
+        pdf.cell(col_w, 8, "Design", ln=True, align='R')
+        pdf.set_text_color(0, 0, 0)
 
     # --- Rechnungsdaten ---
     invoice_y = max(pdf.get_y(), 50)
diff --git a/static/script.js b/static/script.js
index 58b0ff6..f945988 100644
--- a/static/script.js
+++ b/static/script.js
@@ -139,6 +139,41 @@ function showNotification(msg) {
     setTimeout(() => { container.style.display = 'none'; }, 2500);
 }
 
+/** Logo hochladen via AJAX. */
+async function uploadLogo() {
+    const input = document.getElementById('logo-upload');
+    if (!input.files || !input.files[0]) {
+        showNotification('Bitte eine Datei auswaehlen');
+        return;
+    }
+    const formData = new FormData();
+    formData.append('logo', input.files[0]);
+    try {
+        const res = await fetch('/upload_logo', { method: 'POST', body: formData });
+        const data = await res.json();
+        if (data.status === 'ok') {
+            showNotification('Logo gespeichert!');
+            setTimeout(() => location.reload(), 800);
+        }
+    } catch (e) {
+        showNotification('Fehler beim Hochladen');
+    }
+}
+
+/** Logo loeschen. */
+async function deleteLogo() {
+    try {
+        const res = await fetch('/delete_logo', { method: 'POST' });
+        const data = await res.json();
+        if (data.status === 'ok') {
+            showNotification('Logo entfernt');
+            setTimeout(() => location.reload(), 800);
+        }
+    } catch (e) {
+        showNotification('Fehler beim Loeschen');
+    }
+}
+
 /** Initiale Berechnung beim Seitenladen. */
 document.addEventListener('DOMContentLoaded', () => {
     recalculate();
diff --git a/templates/settings.html b/templates/settings.html
index 28df781..952f683 100644
--- a/templates/settings.html
+++ b/templates/settings.html
@@ -78,6 +78,27 @@
                             </div>
                         </div>
 
+                        <div class="card mb-3">
+                            <div class="card-header"><i class="ti ti-photo me-2"></i>Logo</div>
+                            <div class="card-body">
+                                <div class="mb-3">
+                                    {% if config.logo %}
+                                    <div class="mb-2">
+                                        <img src="{{ url_for('static', filename='logo.png') }}" style="max-height:80px;max-width:240px" class="border rounded p-1">
+                                    </div>
+                                    <button type="button" class="btn btn-outline-danger btn-sm mb-2" onclick="deleteLogo()">
+                                        <i class="ti ti-trash me-1"></i>Logo entfernen
+                                    </button>
+                                    {% endif %}
+                                    <input type="file" class="form-control" id="logo-upload" accept="image/png,image/jpeg,image/webp">
+                                    <button type="button" class="btn btn-primary btn-sm mt-2" onclick="uploadLogo()">
+                                        <i class="ti ti-upload me-1"></i>Hochladen
+                                    </button>
+                                    <div class="form-text">Empfohlen: PNG, max. 240px breit. Erscheint rechts oben auf der Rechnung.</div>
+                                </div>
+                            </div>
+                        </div>
+
                         <div class="card mb-3">
                             <div class="card-header"><i class="ti ti-tools me-2"></i>Drucker Abschreibung</div>
                             <div class="card-body">