Update app.py

app.py

@@ -14,13 +14,24 @@ def generate_qr_image(url, image_size):
     qr = qrcode.QRCode(
         version=1,
         error_correction=qrcode.constants.ERROR_CORRECT_L,
-        box_size=50,
-        border=4,
+        box_size=50,  # Set a default box size
+        border=4,  # Set a default border size
     )
     qr.add_data(url)
     qr.make(fit=True)
 
-    qr_img = qr.make_image(fill_color=None, back_color="white").convert("RGBA")
+    qr_img = qr.make_image(fill_color="black", back_color="white").convert("RGBA")
+
+    # Convert black color pixels to transparent
+    data = qr_img.getdata()
+    new_data = []
+    for item in data:
+        if item[:3] == (0, 0, 0):  # Change black pixels to transparent
+            new_data.append((0, 0, 0, 0))
+        else:
+            new_data.append(item)
+    qr_img.putdata(new_data)
+
     qr_img = qr_img.resize(image_size)
 
     return qr_img
@@ -40,7 +51,7 @@ def generate_image(url, text):
     api_image = Image.open(io.BytesIO(image_bytes))
 
     # Generate QR code image
-    qr_image = generate_qr_image(url, (250, 250))
+    qr_image = generate_qr_image(url, api_image.size)
 
     # Create a blank image with transparency
     final_image = Image.new('RGBA', api_image.size, (255, 255, 255, 0))