Serve avatars as image/webp

arena/main.py

@@ -1,6 +1,7 @@
 """HTTP API + static frontend."""
 import asyncio
 import json
+import mimetypes
 import os
 import time
 from collections import defaultdict, deque
@@ -17,6 +18,7 @@ from .config import (GAMES_PER_IP_PER_HOUR, GOOGLE_MAPS_BROWSER_KEY, MODELS, ROU
                      ROUNDS_PER_GAME, AGENT_MAX_STEPS, AGENT_MAX_GEOCODES, public_models, server_key_for)
 from .game import GAMES, Game, prune_games
 
+mimetypes.add_type("image/webp", ".webp")  # missing from some slim images
 STATIC_DIR = os.path.join(os.path.dirname(os.path.dirname(__file__)), "static")
 
 app = FastAPI(title="GeoGuessr Arena")