diff --git a/src/gemini/client.py b/src/gemini/client.py
index a58e3fb..07362e1 100644
--- a/src/gemini/client.py
+++ b/src/gemini/client.py
@@ -228,6 +228,7 @@ async def generate_content(
                             url=image[0][3][3],
                             title=f"[Generated Image {image[3][6]}]",
                             alt=image[3][5][i],
+                            cookies=self.cookies,
                         )
                         for i, image in enumerate(candidate[12][7][0])
                     ]
diff --git a/src/gemini/types.py b/src/gemini/types.py
index 93597d8..999cae8 100644
--- a/src/gemini/types.py
+++ b/src/gemini/types.py
@@ -1,7 +1,9 @@
+import re
 from datetime import datetime
 
-from pydantic import BaseModel, validator
+from loguru import logger
 from httpx import AsyncClient, HTTPError
+from pydantic import BaseModel, field_validator
 
 
 class Image(BaseModel):
@@ -30,21 +32,33 @@ def __repr__(self):
 
     async def save(
         self, path: str = "temp/", filename: str = None, cookies: dict = None
-    ):
+    ) -> None:
         """
         Save the image to disk.
 
         Parameters
         ----------
-        path: `str`
+        path: `str`, optional
             Path to save the image
         filename: `str`, optional
             Filename to save the image, by default will use the original filename from the URL
+        cookies: `dict`, optional
+            Cookies used for requesting the content of the image
         """
+        try:
+            filename = filename or re.search(r"^(.*\.\w+)", self.url.split("/")[-1]).group()
+        except AttributeError:
+            filename = self.url.split("/")[-1]
+
         async with AsyncClient(follow_redirects=True, cookies=cookies) as client:
             response = await client.get(self.url)
             if response.status_code == 200:
-                filename = filename or self.url.split("/")[-1]
+                content_type = response.headers.get("content-type")
+                if content_type and "image" not in content_type:
+                    logger.warning(
+                        f"Content type of {filename} is not image, but {content_type}."
+                    )
+
                 with open(f"{path}{filename}", "wb") as file:
                     file.write(response.content)
             else:
@@ -71,15 +85,20 @@ class GeneratedImage(Image):
         Cookies used for requesting the content of the generated image, inherit from GeminiClient object or manually set.
         Must contain valid "__Secure-1PSID" and "__Secure-1PSIDTS" values
     """
-    cookies: dict
 
-    @validator("cookies")
-    def validate_cookies(cls, value):
-        if "__Secure-1PSID" not in value or "__Secure-1PSIDTS" not in value:
-            raise ValueError("Cookies must contain '__Secure-1PSID' and '__Secure-1PSIDTS'")
-        return value
+    cookies: dict[str, str]
 
-    async def save(self, path: str = "temp/", filename: str = None):
+    @field_validator("cookies")
+    @classmethod
+    def validate_cookies(cls, v: dict) -> dict:
+        if "__Secure-1PSID" not in v or "__Secure-1PSIDTS" not in v:
+            raise ValueError(
+                "Cookies must contain '__Secure-1PSID' and '__Secure-1PSIDTS'"
+            )
+        return v
+
+    # @override
+    async def save(self, path: str = "temp/", filename: str = None) -> None:
         """
         Save the image to disk.
 
@@ -156,15 +175,15 @@ def __repr__(self):
         return f"ModelOutput(metadata={self.metadata}, chosen={self.chosen}, candidates={self.candidates})"
 
     @property
-    def text(self):
+    def text(self) -> str:
         return self.candidates[self.chosen].text
 
     @property
-    def images(self):
+    def images(self) -> list[Image]:
         return self.candidates[self.chosen].images
 
     @property
-    def rcid(self):
+    def rcid(self) -> str:
         return self.candidates[self.chosen].rcid
 
 
diff --git a/tests/test_save_image.py b/tests/test_save_image.py
index 4ab266f..50861ca 100644
--- a/tests/test_save_image.py
+++ b/tests/test_save_image.py
@@ -17,7 +17,7 @@ async def asyncSetUp(self):
 
     async def test_save_web_image(self):
         response = await self.geminiclient.generate_content(
-            "Send me some pictures of cats"
+            "Send me 10 pictures of random subjects"
         )
         self.assertTrue(response.images)
         for i, image in enumerate(response.images):
@@ -26,7 +26,7 @@ async def test_save_web_image(self):
 
     async def test_save_generated_image(self):
         response = await self.geminiclient.generate_content(
-            "Generate some pictures of cats"
+            "Generate some pictures of random subjects"
         )
         self.assertTrue(response.images)
         for i, image in enumerate(response.images):