diff --git a/kindlecomicconverter/comic2ebook.py b/kindlecomicconverter/comic2ebook.py
index 28744f5..3242d0a 100755
--- a/kindlecomicconverter/comic2ebook.py
+++ b/kindlecomicconverter/comic2ebook.py
@@ -832,8 +832,7 @@ def chunk_directory(path):
     level = -1
     for root, _, files in os.walk(os.path.join(path, 'OEBPS', 'Images')):
         for f in files:
-            if f.endswith('.jpg') or f.endswith('.jpeg') or f.endswith('.png') or f.endswith('.gif') or \
-                    f.endswith('.webp'):
+            if getImageFileName(f):
                 newLevel = os.path.join(root, f).replace(os.path.join(path, 'OEBPS', 'Images'), '').count(os.sep)
                 if level != -1 and level != newLevel:
                     level = 0
diff --git a/kindlecomicconverter/shared.py b/kindlecomicconverter/shared.py
index 8e7920d..d98c5de 100644
--- a/kindlecomicconverter/shared.py
+++ b/kindlecomicconverter/shared.py
@@ -49,7 +49,7 @@ class HTMLStripper(HTMLParser):
 def getImageFileName(imgfile):
     name, ext = os.path.splitext(imgfile)
     ext = ext.lower()
-    if (name.startswith('.') and len(name) == 1) or ext not in ['.png', '.jpg', '.jpeg', '.gif', '.webp']:
+    if (name.startswith('.') and len(name) == 1) or ext not in ['.png', '.jpg', '.jpeg', '.gif', '.webp', '.jp2', '.j2k', '.jpx']:
         return None
     return [name, ext]