Webp support

app/main.py

@@ -979,6 +979,11 @@ async def serve_proxy_media_resized(
         if getattr(i, "is_animated", False):
             raise ValueError
         i.thumbnail((size, size))
+        try:
+            resized_buf = BytesIO()
+            i.save(resized_buf, format="webp")
+        except Exception:
+            logger.exception("Failed to convert to webp")
             resized_buf = BytesIO()
             i.save(resized_buf, format=i.format)
         resized_buf.seek(0)