diff --git a/thumbframes_dl/__init__.py b/thumbframes_dl/__init__.py
index efdc96c..d231ac6 100644
--- a/thumbframes_dl/__init__.py
+++ b/thumbframes_dl/__init__.py
@@ -1,3 +1,4 @@
-from .extractors import *  # noqa: F401, F403
-from .utils import logger, ExtractorError  # noqa: F401
-from .version import __version__  # noqa: F401
+# flake8: noqa F401
+from .extractors import *  # noqa: F403
+from .utils import logger, ExtractorError
+from .version import __version__
diff --git a/thumbframes_dl/extractors/__init__.py b/thumbframes_dl/extractors/__init__.py
index 69a41f3..bec6657 100644
--- a/thumbframes_dl/extractors/__init__.py
+++ b/thumbframes_dl/extractors/__init__.py
@@ -1 +1,2 @@
-from .youtube import YouTubeFrames  # noqa: F401
+# flake8: noqa F401
+from .youtube import YouTubeFrames
diff --git a/thumbframes_dl/extractors/base/__init__.py b/thumbframes_dl/extractors/base/__init__.py
new file mode 100644
index 0000000..ac28bc6
--- /dev/null
+++ b/thumbframes_dl/extractors/base/__init__.py
@@ -0,0 +1,4 @@
+# flake8: noqa F401
+from .format import ThumbFramesFormat
+from .frames import WebsiteFrames
+from .image import ThumbFramesImage
diff --git a/thumbframes_dl/extractors/base/format.py b/thumbframes_dl/extractors/base/format.py
new file mode 100644
index 0000000..221ef8d
--- /dev/null
+++ b/thumbframes_dl/extractors/base/format.py
@@ -0,0 +1,39 @@
+from functools import reduce, total_ordering
+from typing import List, Optional
+
+from .image import ThumbFramesImage
+
+
+@total_ordering
+class ThumbFramesFormat(object):
+    """
+    Basic metadata to show the qualities of each set of ThumbFramesImages.
+    Useful when there's more than one list of images per video.
+    Can be compared and sorted to get the frames with the highest resolution.
+    """
+
+    def __init__(self, format_id: Optional[str], thumbframes: List[ThumbFramesImage]):
+        self.format_id = format_id
+        self.frame_width = thumbframes[0].width // thumbframes[0].cols
+        self.frame_height = thumbframes[0].height // thumbframes[0].rows
+        self.total_frames = reduce(lambda acum, x: acum + x.n_frames, thumbframes, 0)
+        self.total_images = len(thumbframes)
+
+    def __hash__(self):
+        return hash(self.format_id)
+
+    @property
+    def frame_size(self):
+        return self.frame_width * self.frame_height
+
+    def __eq__(self, other):
+        return self.frame_size == other.frame_size
+
+    def __lt__(self, other):
+        return self.frame_size < other.frame_size
+
+    def __repr__(self):
+        return "<%s %s: %s %sx%s frames in %s images>" % (
+            self.__class__.__name__,
+            self.format_id, self.total_frames, self.frame_width, self.frame_height, self.total_images
+        )
diff --git a/thumbframes_dl/extractors/_base.py b/thumbframes_dl/extractors/base/frames.py
similarity index 64%
rename from thumbframes_dl/extractors/_base.py
rename to thumbframes_dl/extractors/base/frames.py
index 95e022a..e0eaf86 100644
--- a/thumbframes_dl/extractors/_base.py
+++ b/thumbframes_dl/extractors/base/frames.py
@@ -1,5 +1,4 @@
 import abc
-from functools import reduce, total_ordering
 from typing import Dict, List, Optional, Sequence, Union
 
 from youtube_dl.YoutubeDL import YoutubeDL
@@ -7,75 +6,8 @@
 
 from thumbframes_dl.utils import logger
 
-
-class ThumbFramesImage(InfoExtractor):
-    """
-    Each ThumbFramesImage represents a single image with n_frames frames arranged in a cols*rows grid.
-    Note that different images may have different sizes and number of frames even if they're from the same video.
-    """
-
-    def __init__(self, url: str, width: int, height: int, cols: int, rows: int, n_frames: int):
-        self.set_downloader(YoutubeDL({'source_address': '0.0.0.0', 'logger': logger}))
-        self.url = url
-        self.width = width
-        self.height = height
-        self.cols = cols
-        self.rows = rows
-        self.n_frames = n_frames
-        self.mime_type = None
-        self._image = None  # type: Optional[bytes]
-
-    def get_image(self) -> bytes:
-        """
-        The raw image as bytes.
-        Raises an ExtractorError if download fails.
-        """
-        if self._image is None:
-            resp = self._request_webpage(self.url, self.url, fatal=True)
-            raw_image = resp.read()
-            self.mime_type = resp.headers.get('Content-Type', '').split(';')[0].split('/')[1]
-            self._image = raw_image
-        return self._image
-
-    def __repr__(self):
-        return "<%s: %sx%s image in a %sx%s grid>" % (
-            self.__class__.__name__, self.width, self.height, self.cols, self.rows
-        )
-
-
-@total_ordering
-class ThumbFramesFormat(object):
-    """
-    Basic metadata to show the qualities of each set of ThumbFramesImages.
-    Useful when there's more than one list of images per video.
-    Can be compared and sorted to get the frames with the highest resolution.
-    """
-
-    def __init__(self, format_id: Optional[str], thumbframes: List[ThumbFramesImage]):
-        self.format_id = format_id
-        self.frame_width = thumbframes[0].width // thumbframes[0].cols
-        self.frame_height = thumbframes[0].height // thumbframes[0].rows
-        self.total_frames = reduce(lambda acum, x: acum + x.n_frames, thumbframes, 0)
-        self.total_images = len(thumbframes)
-
-    def __hash__(self):
-        return hash(self.format_id)
-
-    @property
-    def frame_size(self):
-        return self.frame_width * self.frame_height
-
-    def __eq__(self, other):
-        return self.frame_size == other.frame_size
-
-    def __lt__(self, other):
-        return self.frame_size < other.frame_size
-
-    def __repr__(self):
-        return "<%s %s: %s %sx%s frames in %s images>" % (
-            self.__class__.__name__,
-            self.format_id, self.total_frames, self.frame_width, self.frame_height, self.total_images
-        )
+from .format import ThumbFramesFormat
+from .image import ThumbFramesImage
 
 
 class WebsiteFrames(abc.ABC, InfoExtractor):
diff --git a/thumbframes_dl/extractors/base/image.py b/thumbframes_dl/extractors/base/image.py
new file mode 100644
index 0000000..4c0b6c0
--- /dev/null
+++ b/thumbframes_dl/extractors/base/image.py
@@ -0,0 +1,41 @@
+from typing import Optional
+
+from youtube_dl.YoutubeDL import YoutubeDL
+from youtube_dl.extractor.common import InfoExtractor
+
+from thumbframes_dl.utils import logger
+
+
+class ThumbFramesImage(InfoExtractor):
+    """
+    Each ThumbFramesImage represents a single image with n_frames frames arranged in a cols*rows grid.
+    Note that different images may have different sizes and number of frames even if they're from the same video.
+    """
+
+    def __init__(self, url: str, width: int, height: int, cols: int, rows: int, n_frames: int):
+        self.set_downloader(YoutubeDL({'source_address': '0.0.0.0', 'logger': logger}))
+        self.url = url
+        self.width = width
+        self.height = height
+        self.cols = cols
+        self.rows = rows
+        self.n_frames = n_frames
+        self.mime_type = None
+        self._image: Optional[bytes] = None
+
+    def get_image(self) -> bytes:
+        """
+        The raw image as bytes.
+        Raises an ExtractorError if download fails.
+        """
+        if self._image is None:
+            resp = self._request_webpage(self.url, self.url, fatal=True)
+            raw_image = resp.read()
+            self.mime_type = resp.headers.get('Content-Type', '').split(';')[0].split('/')[1]
+            self._image = raw_image
+        return self._image
+
+    def __repr__(self):
+        return "<%s: %sx%s image in a %sx%s grid>" % (
+            self.__class__.__name__, self.width, self.height, self.cols, self.rows
+        )
diff --git a/thumbframes_dl/extractors/youtube.py b/thumbframes_dl/extractors/youtube.py
index 9aca04f..960560b 100644
--- a/thumbframes_dl/extractors/youtube.py
+++ b/thumbframes_dl/extractors/youtube.py
@@ -4,9 +4,10 @@
 from youtube_dl.utils import try_get, int_or_none
 from youtube_dl.extractor.youtube import YoutubeIE
 
-from ._base import WebsiteFrames, ThumbFramesImage
 from thumbframes_dl.utils import logger
 
+from .base import WebsiteFrames, ThumbFramesImage
+
 
 class YouTubeFrames(WebsiteFrames, YoutubeIE):
     _YOUTUBE_URL = 'https://www.youtube.com'
diff --git a/thumbframes_dl/version.py b/thumbframes_dl/version.py
index f23a6b3..9e78220 100644
--- a/thumbframes_dl/version.py
+++ b/thumbframes_dl/version.py
@@ -1 +1 @@
-__version__ = "0.13.0"
+__version__ = "0.14.0"