Update image rendering in route_utils to use WEBP format and optimize quality

route_utils.py

@@ -38,13 +38,13 @@ def generate_route_image_file(coords, start_lat, start_lon, end_lat, end_lon):
     context.add_object(end_marker)
     
     # Generate image and save to temp file
-    image = context.render_pillow(800, 600)
+    image = context.render_pillow(500, 375)
     
     # Create unique temp file path
-    filename = f"route_{uuid.uuid4().hex[:8]}.png"
+    filename = f"route_{uuid.uuid4().hex[:8]}.webp"
     filepath = os.path.join(TEMP_DIR, filename)
     
-    image.save(filepath)
+    image.save(filepath, format='WEBP', quality=85, optimize=True)
     return filepath