diff --git a/app.py b/app.py
index 5223bb2..ef34a5f 100644
--- a/app.py
+++ b/app.py
@@ -6,6 +6,8 @@ from flask_bcrypt import Bcrypt
 from werkzeug.utils import secure_filename
 from functools import wraps
 from flask_migrate import Migrate
+from pdf2image import convert_from_path
+import subprocess
 
 app = Flask(__name__)
 
@@ -73,6 +75,10 @@ def admin_required(f):
         return f(*args, **kwargs)
     return decorated_function
 
+def convert_ppt_to_pdf(input_file, output_file):
+    command = ['libreoffice', '--headless', '--convert-to', 'pdf', '--outdir', os.path.dirname(output_file), input_file]
+    subprocess.run(command, check=True)
+
 @app.route('/')
 @login_required
 def dashboard():
@@ -124,16 +130,41 @@ def upload_content():
         files = request.files.getlist('files')
         duration = int(request.form['duration'])
         return_url = request.form['return_url']
+        media_type = request.form['media_type']
         
         for file in files:
             filename = secure_filename(file.filename)
             file_path = os.path.join(app.config['UPLOAD_FOLDER'], filename)
             file.save(file_path)
-            if target_type == 'player':
-                new_content = Content(file_name=filename, duration=duration, player_id=target_id)
-            elif target_type == 'group':
-                new_content = Content(file_name=filename, duration=duration, group_id=target_id)
-            db.session.add(new_content)
+
+            if media_type == 'pdf':
+                # Convert PDF to PNG
+                images = convert_from_path(file_path)
+                for i, image in enumerate(images):
+                    image_filename = f"{os.path.splitext(filename)[0]}_page_{i + 1}.png"
+                    image_path = os.path.join(app.config['UPLOAD_FOLDER'], image_filename)
+                    image.save(image_path, 'PNG')
+                    new_content = Content(file_name=image_filename, duration=duration, player_id=target_id if target_type == 'player' else None, group_id=target_id if target_type == 'group' else None)
+                    db.session.add(new_content)
+                os.remove(file_path)  # Remove the original PDF file
+            elif media_type == 'ppt':
+                # Convert PPT/PPTX to PDF
+                pdf_filename = f"{os.path.splitext(filename)[0]}.pdf"
+                pdf_path = os.path.join(app.config['UPLOAD_FOLDER'], pdf_filename)
+                convert_ppt_to_pdf(file_path, pdf_path)
+                # Convert PDF to PNG
+                images = convert_from_path(pdf_path)
+                for i, image in enumerate(images):
+                    image_filename = f"{os.path.splitext(filename)[0]}_page_{i + 1}.png"
+                    image_path = os.path.join(app.config['UPLOAD_FOLDER'], image_filename)
+                    image.save(image_path, 'PNG')
+                    new_content = Content(file_name=image_filename, duration=duration, player_id=target_id if target_type == 'player' else None, group_id=target_id if target_type == 'group' else None)
+                    db.session.add(new_content)
+                os.remove(file_path)  # Remove the original PPT/PPTX file
+                os.remove(pdf_path)  # Remove the intermediate PDF file
+            else:
+                new_content = Content(file_name=filename, duration=duration, player_id=target_id if target_type == 'player' else None, group_id=target_id if target_type == 'group' else None)
+                db.session.add(new_content)
         
         db.session.commit()
         return redirect(return_url)
@@ -441,6 +472,31 @@ def upload_personalization_pictures():
     
     return redirect(url_for('admin'))
 
+@app.route('/clean_unused_files', methods=['POST'])
+@login_required
+@admin_required
+def clean_unused_files():
+    # Get all file names from the database
+    content_files = {content.file_name for content in Content.query.all()}
+    logo_file = 'logo.png'
+    login_picture_file = 'login_picture.png'
+
+    # Get all files in the upload folder
+    all_files = set(os.listdir(app.config['UPLOAD_FOLDER']))
+
+    # Determine unused files
+    used_files = content_files | {logo_file, login_picture_file}
+    unused_files = all_files - used_files
+
+    # Delete unused files
+    for file_name in unused_files:
+        file_path = os.path.join(app.config['UPLOAD_FOLDER'], file_name)
+        if os.path.isfile(file_path):
+            os.remove(file_path)
+
+    flash('Unused files have been cleaned.', 'success')
+    return redirect(url_for('admin'))
+
 @app.context_processor
 def inject_theme():
     if current_user.is_authenticated: