1 files changed, 24 insertions, 15 deletions

diff --git a/g4f/image.py b/g4f/image.py
index 68767155..1a4692b3 100644
--- a/g4f/image.py
+++ b/g4f/image.py
@@ -3,14 +3,13 @@ from __future__ import annotations
 import re
 from io import BytesIO
 import base64
-from .typing import ImageType, Union
+from .typing import ImageType, Union, Image
 
 try:
-    from PIL.Image import open as open_image, new as new_image, Image
+    from PIL.Image import open as open_image, new as new_image
     from PIL.Image import FLIP_LEFT_RIGHT, ROTATE_180, ROTATE_270, ROTATE_90
     has_requirements = True
 except ImportError:
-    Image = type
     has_requirements = False
     
 from .errors import MissingRequirementsError
@@ -29,6 +28,9 @@ def to_image(image: ImageType, is_svg: bool = False) -> Image:
     """
     if not has_requirements:
         raise MissingRequirementsError('Install "pillow" package for images')
+    if isinstance(image, str):
+        is_data_uri_an_image(image)
+        image = extract_data_uri(image)
     if is_svg:
         try:
             import cairosvg
@@ -39,9 +41,6 @@ def to_image(image: ImageType, is_svg: bool = False) -> Image:
         buffer = BytesIO()
         cairosvg.svg2png(image, write_to=buffer)
         return open_image(buffer)
-    if isinstance(image, str):
-        is_data_uri_an_image(image)
-        image = extract_data_uri(image)
     if isinstance(image, bytes):
         is_accepted_format(image)
         return open_image(BytesIO(image))
@@ -79,9 +78,9 @@ def is_data_uri_an_image(data_uri: str) -> bool:
     if not re.match(r'data:image/(\w+);base64,', data_uri):
         raise ValueError("Invalid data URI image.")
     # Extract the image format from the data URI
-    image_format = re.match(r'data:image/(\w+);base64,', data_uri).group(1)
+    image_format = re.match(r'data:image/(\w+);base64,', data_uri).group(1).lower()
     # Check if the image format is one of the allowed formats (jpg, jpeg, png, gif)
-    if image_format.lower() not in ALLOWED_EXTENSIONS:
+    if image_format not in ALLOWED_EXTENSIONS and image_format != "svg+xml":
         raise ValueError("Invalid image format (from mime file type).")
 
 def is_accepted_format(binary_data: bytes) -> bool:
@@ -187,7 +186,7 @@ def to_base64_jpg(image: Image, compression_rate: float) -> str:
     image.save(output_buffer, format="JPEG", quality=int(compression_rate * 100))
     return base64.b64encode(output_buffer.getvalue()).decode()
 
-def format_images_markdown(images, alt: str, preview: str="{image}?w=200&h=200") -> str:
+def format_images_markdown(images, alt: str, preview: str = None) -> str:
     """
     Formats the given images as a markdown string.
 
@@ -200,9 +199,12 @@ def format_images_markdown(images, alt: str, preview: str="{image}?w=200&h=200")
         str: The formatted markdown string.
     """
     if isinstance(images, str):
-        images = f"[![{alt}]({preview.replace('{image}', images)})]({images})"
+        images = f"[![{alt}]({preview.replace('{image}', images) if preview else images})]({images})"
     else:
-        images = [f"[![#{idx+1} {alt}]({preview.replace('{image}', image)})]({image})" for idx, image in enumerate(images)]
+        images = [
+            f"[![#{idx+1} {alt}]({preview.replace('{image}', image) if preview else image})]({image})"
+            for idx, image in enumerate(images)
+        ]
         images = "\n".join(images)
     start_flag = "<!-- generated images start -->\n"
     end_flag = "<!-- generated images end -->\n"
@@ -223,7 +225,7 @@ def to_bytes(image: Image) -> bytes:
     image.seek(0)
     return bytes_io.getvalue()
 
-class ImageResponse():
+class ImageResponse:
     def __init__(
         self,
         images: Union[str, list],
@@ -235,10 +237,17 @@ class ImageResponse():
         self.options = options
         
     def __str__(self) -> str:
-        return format_images_markdown(self.images, self.alt)
+        return format_images_markdown(self.images, self.alt, self.get("preview"))
     
     def get(self, key: str):
         return self.options.get(key)
     
-class ImageRequest(ImageResponse):
-    pass
\ No newline at end of file
+class ImageRequest:
+    def __init__(
+        self,
+        options: dict = {}
+    ):
+        self.options = options
+    
+    def get(self, key: str):
+        return self.options.get(key)
\ No newline at end of file