diff --git a/ebook_converter/__init__.py b/ebook_converter/__init__.py
index df643fa..d3970f7 100644
--- a/ebook_converter/__init__.py
+++ b/ebook_converter/__init__.py
@@ -1,5 +1,4 @@
 import html
-import math
 import os
 import re
 
@@ -9,30 +8,6 @@
 from ebook_converter.ebooks.html_entities import html5_entities
 
 
-def fit_image(width, height, pwidth, pheight):
-    """
-    Fit image in box of width pwidth and height pheight.
-    @param width: Width of image
-    @param height: Height of image
-    @param pwidth: Width of box
-    @param pheight: Height of box
-    @return: scaled, new_width, new_height. scaled is True iff new_width
-             and/or new_height is different from width or height.
-    """
-    scaled = height > pheight or width > pwidth
-    if height > pheight:
-        corrf = pheight / float(height)
-        width, height = math.floor(corrf*width), pheight
-    if width > pwidth:
-        corrf = pwidth / float(width)
-        width, height = pwidth, math.floor(corrf*height)
-    if height > pheight:
-        corrf = pheight / float(height)
-        width, height = math.floor(corrf*width), pheight
-
-    return scaled, int(width), int(height)
-
-
 class CurrentDir(object):
 
     def __init__(self, path):
diff --git a/ebook_converter/ebooks/covers.py b/ebook_converter/ebooks/covers.py
index 7fd7aaf..46a28b3 100644
--- a/ebook_converter/ebooks/covers.py
+++ b/ebook_converter/ebooks/covers.py
@@ -1,4 +1,4 @@
-from ebook_converter import fit_image
+# from ebook_converter.util import img
 from ebook_converter.constants_old import __appname__, __version__
 from ebook_converter.gui2 import ensure_app, config, load_builtin_fonts, pixmap_to_data
 from ebook_converter.utils.cleantext import clean_ascii_chars, clean_xml_chars
@@ -28,7 +28,7 @@
 #            bottom = footer_block.position.y - 50
 #            logo = QImage(logo_path or I('library.png'))
 #            pwidth, pheight = rect.width(), bottom - top
-#            scaled, width, height = fit_image(logo.width(), logo.height(), pwidth, pheight)
+#            scaled, width, height = img.fit_image(logo.width(), logo.height(), pwidth, pheight)
 #            x, y = (pwidth - width) // 2, (pheight - height) // 2
 #            rect = QRect(x, top + y, width, height)
 #            painter.setRenderHint(QPainter.SmoothPixmapTransform)
diff --git a/ebook_converter/ebooks/docx/writer/images.py b/ebook_converter/ebooks/docx/writer/images.py
index daaff85..c29ebaf 100644
--- a/ebook_converter/ebooks/docx/writer/images.py
+++ b/ebook_converter/ebooks/docx/writer/images.py
@@ -6,9 +6,9 @@
 
 from lxml import etree
 
-from ebook_converter import fit_image
 from ebook_converter.ebooks.docx.images import pt_to_emu
 from ebook_converter.utils.filenames import ascii_filename
+from ebook_converter.utils import img as uimg
 from ebook_converter.utils.imghdr import identify
 
 
@@ -101,7 +101,8 @@ def create_image_markup(self, html_img, stylizer, href, as_block=False):
         img = self.images[href]
         name = urllib.parse.unquote(posixpath.basename(href))
         width, height = style.img_size(img.width, img.height)
-        scaled, width, height = fit_image(width, height, self.page_width, self.page_height)
+        scaled, width, height = uimg.fit_image(width, height, self.page_width,
+                                               self.page_height)
         width, height = map(pt_to_emu, (width, height))
 
         makeelement, namespaces = self.document_relationships.namespace.makeelement, self.document_relationships.namespace.namespaces
diff --git a/ebook_converter/ebooks/lrf/html/convert_from.py b/ebook_converter/ebooks/lrf/html/convert_from.py
index 71e3a79..92462c1 100644
--- a/ebook_converter/ebooks/lrf/html/convert_from.py
+++ b/ebook_converter/ebooks/lrf/html/convert_from.py
@@ -19,9 +19,9 @@
 import math
 
 import bs4
+from PIL import Image as PILImage
 
-from ebook_converter import entity_to_unicode, fit_image, \
-        force_unicode
+from ebook_converter import entity_to_unicode, force_unicode
 from ebook_converter.constants_old import __appname__, filesystem_encoding, \
         preferred_encoding
 from ebook_converter.devices.interface import DevicePlugin as Device
@@ -37,8 +37,7 @@
     RuledLine, Span, Sub, Sup, TextBlock
 )
 from ebook_converter.ptempfile import PersistentTemporaryFile
-
-from PIL import Image as PILImage
+from ebook_converter.utils import img as uimg
 
 
 def strip_style_comments(match):
@@ -1075,7 +1074,7 @@ def scale_image(width, height):
             finally:
                 pt.close()
 
-        scaled, width, height = fit_image(width, height, pwidth, pheight)
+        scaled, width, height = uimg.fit_image(width, height, pwidth, pheight)
         if scaled:
             path = scale_image(width, height)
 
@@ -1956,7 +1955,8 @@ def process_file(path, options, logger):
                 corrf = pwidth/width
                 width, height = pwidth, int(corrf*height)
 
-            scaled, width, height = fit_image(width, height, pwidth, pheight)
+            scaled, width, height = uimg.fit_image(width, height, pwidth,
+                                                   pheight)
             try:
                 cim = im.resize((width, height),
                                 PILImage
diff --git a/ebook_converter/ebooks/oeb/transforms/rescale.py b/ebook_converter/ebooks/oeb/transforms/rescale.py
index 9d4e409..d1677be 100644
--- a/ebook_converter/ebooks/oeb/transforms/rescale.py
+++ b/ebook_converter/ebooks/oeb/transforms/rescale.py
@@ -1,9 +1,4 @@
-from ebook_converter import fit_image
-
-
-__license__ = 'GPL v3'
-__copyright__ = '2009, Kovid Goyal <kovid@kovidgoyal.net>'
-__docformat__ = 'restructuredtext en'
+from ebook_converter.utils import img as uimg
 
 
 class RescaleImages(object):
@@ -57,7 +52,9 @@ def rescale(self):
                 except Exception:
                     self.log.exception('Failed to convert image %s from CMYK to RGB' % item.href)
 
-                scaled, new_width, new_height = fit_image(width, height, page_width, page_height)
+                scaled, new_width, new_height = uimg.fit_image(width, height,
+                                                               page_width,
+                                                               page_height)
                 if scaled:
                     new_width = max(1, new_width)
                     new_height = max(1, new_height)
diff --git a/ebook_converter/utils/img.py b/ebook_converter/utils/img.py
index 3550c08..53a6dd1 100644
--- a/ebook_converter/utils/img.py
+++ b/ebook_converter/utils/img.py
@@ -1,4 +1,5 @@
 import errno
+import math
 import os
 import shutil
 import subprocess
@@ -11,7 +12,7 @@
 #from PyQt5.QtCore import QBuffer, QByteArray, Qt
 #from PyQt5.QtGui import QColor, QImage, QImageReader, QImageWriter, QPixmap, QTransform
 
-from ebook_converter import fit_image, force_unicode
+from ebook_converter import force_unicode
 from ebook_converter.constants_old import plugins
 from ebook_converter.ptempfile import TemporaryDirectory
 from ebook_converter.utils.config_base import tweaks
@@ -24,6 +25,30 @@
     # raise RuntimeError(imageops_err)
 
 
+def fit_image(width, height, pwidth, pheight):
+    """
+    Fit image in box of width pwidth and height pheight.
+    @param width: Width of image
+    @param height: Height of image
+    @param pwidth: Width of box
+    @param pheight: Height of box
+    @return: scaled, new_width, new_height. scaled is True iff new_width
+             and/or new_height is different from width or height.
+    """
+    scaled = height > pheight or width > pwidth
+    if height > pheight:
+        corrf = pheight / float(height)
+        width, height = math.floor(corrf*width), pheight
+    if width > pwidth:
+        corrf = pwidth / float(width)
+        width, height = pwidth, math.floor(corrf*height)
+    if height > pheight:
+        corrf = pheight / float(height)
+        width, height = math.floor(corrf*width), pheight
+
+    return scaled, int(width), int(height)
+
+
 class NotImage(ValueError):
     pass