Переделал работу с гифками

app/main.py

@@ -27,10 +27,29 @@ async def upload_avatar(file: UploadFile):
     image = Image.open(BytesIO(content))
 
     new_size = (512, 512)
-    resized_image = image.resize(new_size)
-
     image_url = f"static/images/avatars/{name}_avatar.{image.format.lower()}"
-    resized_image.save(image_url, save_all=True) if image.format.lower() in {"gif"} else resized_image.save(image_url)
+    if image.format.lower() == "gif":
+        frames = []
+        try:
+            while True:
+                frames.append(image.copy())
+                image.seek(image.tell() + 1)
+        except EOFError:
+            pass
+        resized_frames = [frame.resize(new_size) for frame in frames]
+        resized_gif = resized_frames[0]
+        resized_gif.save(
+            image_url,
+            save_all=True,
+            append_images=resized_frames[1:],
+            optimize=True,
+            duration=image.info["duration"],
+            loop=image.info["loop"]
+        )
+    else:
+        resized_image = image.resize(new_size)
+
+        resized_image.save(image_url)
     return {"image_url": image_url}