diff --git a/ankiai.py b/ankiai.py
index 5882905..8d83918 100644
--- a/ankiai.py
+++ b/ankiai.py
@@ -1,16 +1,19 @@
 import sys
+import logging
 
+from logging_config import setup_logging
 from images2text import main as ocr_images
 from prompt4cards import prompt_for_card_content, response_to_json
 from json2deck import to_package
 
+setup_logging()
 
 def images_to_package(directory_path, outfile):
     ocr_text = ocr_images(directory_path)
     response_text = prompt_for_card_content(ocr_text)
     deck_json = response_to_json(response_text)
     to_package(deck_json).write_to_file(outfile)
-    print(f"Deck created at: {outfile}")
+    logging.info(f"Deck created at: {outfile}")
 
 
 if __name__ == "__main__":
diff --git a/constants.py b/constants.py
new file mode 100644
index 0000000..bce6b4c
--- /dev/null
+++ b/constants.py
@@ -0,0 +1,14 @@
+# File and Directory Constants
+CONVERTED_DIR = "converted"
+FINAL_OUTPUT = "final.txt"
+IMAGE_EXTENSIONS = ['.png', '.jpg', '.jpeg']
+OUTPUT_FILENAME = "output_deck.json"
+
+# API Constants
+API_KEY_ENV = "OPENAI_API_KEY"
+CHAT_MODEL = "gpt-3.5-turbo"
+
+# Error Messages
+NO_IMAGE_PART_ERROR = 'No image part'
+NO_SELECTED_FILE_ERROR = 'No selected file'
+INVALID_FILENAME_ERROR = 'Invalid filename'
diff --git a/images2text.py b/images2text.py
index 27f352e..54187ee 100755
--- a/images2text.py
+++ b/images2text.py
@@ -1,17 +1,20 @@
 import os
 import sys
+import logging
+
+from logging_config import setup_logging
 from subprocess import run, CalledProcessError
 from concurrent.futures import ThreadPoolExecutor
+from utilities import is_image_file, ensure_directory_exists
+from constants import CONVERTED_DIR, FINAL_OUTPUT
 
-converted_dir = "converted"
 
-def is_image_file(path):
-    lower_path = path.lower()
-    return lower_path.endswith('.png') or lower_path.endswith('.jpg') or lower_path.endswith('.jpeg')
+setup_logging()
+
 
 def convert_image(image_path):
-    print(f"Converting {image_path}...")
-    converted_path = os.path.join(converted_dir, os.path.basename(image_path))
+    logging.info(f"Converting {image_path}...")
+    converted_path = os.path.join(CONVERTED_DIR, os.path.basename(image_path))
     cmd = [
         "convert",
         image_path,
@@ -24,43 +27,45 @@ def convert_image(image_path):
     
     try:
         run(cmd, check=True)
-        print(f"Converted image output to {converted_path}!")
+        logging.info(f"Converted image output to {converted_path}!")
         return converted_path
     except CalledProcessError:
-        print(f"Error converting {image_path} with ImageMagick. Using original for Tesseract.")
+        logging.info(f"Error converting {image_path} with ImageMagick. Using original for Tesseract.")
         return image_path
 
+
 def ocr_image(image_path):
-    print(f"OCR'ing {image_path}...")
+    logging.info(f"OCR'ing {image_path}...")
     text_filename = os.path.basename(image_path).replace(".jpg", ".txt")
-    text_path = os.path.join(converted_dir, text_filename)
+    text_path = os.path.join(CONVERTED_DIR, text_filename)
     cmd = ["tesseract", image_path, text_path.replace(".txt", "")]
     try:
         run(cmd, check=True)
-        print(f"OCRed to {text_path}!")
+        logging.info(f"OCRed to {text_path}!")
         return text_path
     except CalledProcessError:
-        print(f"Error processing {image_path} with Tesseract. Skipping.")
+        logging.info(f"Error processing {image_path} with Tesseract. Skipping.")
         return None
 
+
 def process_image(image_path):
     converted_path = convert_image(image_path)
-    print(f"OCR'ing image {image_path} (now at {converted_path})...")
+    logging.info(f"OCR'ing image {image_path} (now at {converted_path})...")
     text_path = ocr_image(converted_path)
     if text_path and os.path.exists(text_path):
         with open(text_path, 'r') as text_file:
             text_content = text_file.read()
-            print(f"Added text from {text_path} to final output.")
+            logging.info(f"Added text from {text_path} to final output.")
             return text_content
     else:
-        print(f"Cannot locate {text_path}! Cannot add text to final output!")
+        logging.info(f"Cannot locate {text_path}! Cannot add text to final output!")
         return None
 
+
 def main(directory_path):
     final_text = []
 
-    if not os.path.exists(converted_dir):
-        os.mkdir(converted_dir)
+    ensure_directory_exists(CONVERTED_DIR)
 
     image_paths = []
     for root, dirs, files in os.walk(directory_path):
@@ -75,11 +80,10 @@ def main(directory_path):
     
     # Filter out any None values and write the text to final.txt
     final_text = [text for text in final_text if text is not None]
-    FINAL_OUTPUT = "final.txt"
     with open(FINAL_OUTPUT, 'w') as f:
         f.write("\n".join(final_text))
 
-    print(f"All images processed! Final output saved to {FINAL_OUTPUT}")
+    logging.info(f"All images processed! Final output saved to {FINAL_OUTPUT}")
     return final_text  # Add this line
 
 
diff --git a/json2deck.py b/json2deck.py
index a2d74f5..076a469 100644
--- a/json2deck.py
+++ b/json2deck.py
@@ -1,6 +1,12 @@
 import json
 import genanki
 import sys
+import logging
+from logging_config import setup_logging
+
+
+setup_logging()
+
 
 # Create a new model for our cards. This is necessary for genanki.
 MY_MODEL = genanki.Model(
@@ -52,4 +58,4 @@ if __name__ == "__main__":
     input_json = sys.argv[1]
     output_apkg = sys.argv[2]
     json_file_to_package(input_json).write_to_file(output_apkg)
-    print(f"Deck created at: {output_apkg}")
+    logging.info(f"Deck created at: {output_apkg}")
diff --git a/logging_config.py b/logging_config.py
new file mode 100644
index 0000000..1fc05f4
--- /dev/null
+++ b/logging_config.py
@@ -0,0 +1,11 @@
+import logging
+
+def setup_logging():
+    logging.basicConfig(level=logging.DEBUG,
+                        format='%(asctime)s [%(levelname)s] - %(module)s: %(message)s',
+                        datefmt='%Y-%m-%d %H:%M:%S')
+
+    # If you also want to save logs to a file, you can add the below lines.
+    # file_handler = logging.FileHandler('ankiai.log')
+    # file_handler.setFormatter(logging.Formatter('%(asctime)s [%(levelname)s] - %(module)s: %(message)s'))
+    # logging.getLogger().addHandler(file_handler)
diff --git a/prompt4cards.py b/prompt4cards.py
index 3f26432..a98725e 100644
--- a/prompt4cards.py
+++ b/prompt4cards.py
@@ -1,12 +1,11 @@
 import openai
-import sys
 import os
+import sys
 import json
+from constants import API_KEY_ENV, CHAT_MODEL, OUTPUT_FILENAME
 
-CHAT_MODEL = "gpt-3.5-turbo"
-OUTPUT_FILENAME = "output_deck.json"
 
-API_KEY = os.environ.get("OPENAI_API_KEY")
+API_KEY = os.environ.get(API_KEY_ENV)
 if not API_KEY:
     raise ValueError("Please set the OPENAI_API_KEY environment variable.")
 
@@ -86,7 +85,7 @@ def response_to_json(response_text):
 
 if __name__ == "__main__":
     if len(sys.argv) != 2:
-        print("Usage: python text2jsondeck.py <text_file_path>")
+        print("Usage: python prompt4cards.py <text_file_path>")
         sys.exit(1)
     
     text_file_path = sys.argv[1]
diff --git a/server.py b/server.py
index a372748..43685f7 100644
--- a/server.py
+++ b/server.py
@@ -1,48 +1,54 @@
+import os
+import tempfile
+import shutil
+import logging
+
+from logging_config import setup_logging
 from flask import Flask, request, send_from_directory, jsonify
 from werkzeug.utils import secure_filename
-import os
-import tempfile  
-import shutil    
-
 from ankiai import images_to_package
+from constants import IMAGE_KEY, OUTPUT_FILE, NO_IMAGE_PART_ERROR, NO_SELECTED_FILE_ERROR, INVALID_FILENAME_ERROR
 
+
+setup_logging()
+
+
+from logging_config import setup_logging
 app = Flask(__name__)
 
-IMAGE_KEY = 'image'
-OUTPUT_FILE = 'cards.apkg'
-TEMP_DIR = tempfile.mkdtemp()
-
 def save_uploaded_images(images, directory):
     for img in images:
-        # Sanitize the filename
         safe_filename = secure_filename(img.filename)
-
         if not safe_filename:
-            # Handle the case where the filename becomes empty after sanitization
-            raise ValueError("Invalid filename")
+            raise ValueError(INVALID_FILENAME_ERROR)
 
         filename = os.path.join(directory, safe_filename)
         img.save(filename)
 
+
 @app.route('/deck-from-images', methods=['POST'])
 def deck_from_images():
     if IMAGE_KEY not in request.files:
-        return jsonify({'error': 'No image part'}), 400
+        return jsonify({'error': NO_IMAGE_PART_ERROR}), 400
 
     images = request.files.getlist(IMAGE_KEY)
 
     if not images or not any(img.filename != '' for img in images):
-        return jsonify({'error': 'No selected file'}), 400
+        return jsonify({'error': NO_SELECTED_FILE_ERROR}), 400
 
-    save_uploaded_images(images, TEMP_DIR)
+    temp_dir = tempfile.mkdtemp()
+
+    save_uploaded_images(images, temp_dir)
 
     try:
-        images_to_package(TEMP_DIR, OUTPUT_FILE)
+        images_to_package(temp_dir, OUTPUT_FILE)
         return send_from_directory('.', OUTPUT_FILE, as_attachment=True)
-    except Exception as e:  # Consider catching more specific exceptions
+    except Exception as e:
+        logging.error("Exception occurred: "+str(e), exc_info=True)
         return jsonify({'error': str(e)}), 500
     finally:
-        shutil.rmtree(TEMP_DIR)
+        shutil.rmtree(temp_dir)
+
 
 if __name__ == '__main__':
     app.run(debug=True)
diff --git a/utilities.py b/utilities.py
new file mode 100644
index 0000000..03ecc8d
--- /dev/null
+++ b/utilities.py
@@ -0,0 +1,9 @@
+import os
+from constants import IMAGE_EXTENSIONS
+
+def is_image_file(path):
+    return any(path.lower().endswith(ext) for ext in IMAGE_EXTENSIONS)
+
+def ensure_directory_exists(directory):
+    if not os.path.exists(directory):
+        os.mkdir(directory)