diff --git a/README.md b/README.md
index befb289..b54a166 100644
--- a/README.md
+++ b/README.md
@@ -121,7 +121,9 @@ The app relies and includes the following scripts/binaries:
         Rewrite of Landscape Mode support (huge readability improvement for KPW)  
         Upscale use now BILINEAR method  
         Added generic CSS file  
-        Optimized archive extraction for zip/rar files (#40) 
+        Optimized archive extraction for zip/rar files (#40)  
+  - 2.9: Added support for generating a plain CBZ (skipping all the EPUB/Mobi generation) (#45)  
+        Prevent output file overwriting the source one: if a duplicate name is detected, append _kcc to the name
         
 
 ## COPYRIGHT
diff --git a/kcc/comic2ebook.py b/kcc/comic2ebook.py
index 1770a2c..51c1b4b 100755
--- a/kcc/comic2ebook.py
+++ b/kcc/comic2ebook.py
@@ -556,6 +556,8 @@ def main(argv=None):
                       help="Comic title [Default=filename]")
     parser.add_option("-m", "--manga-style", action="store_true", dest="righttoleft", default=False,
                       help="Manga style (Right-to-left reading and splitting) [Default=False]")
+    parser.add_option("-c", "--cbz-output", action="store_true", dest="cbzoutput", default=False,
+                      help="Outputs a CBZ archive and does not generate EPUB")
     parser.add_option("--nopanelviewhq", action="store_true", dest="nopanelviewhq", default=False,
                       help="Disable high quality Panel View [Default=False]")
     parser.add_option("--noprocessing", action="store_false", dest="imgproc", default=True,
@@ -578,7 +580,7 @@ def main(argv=None):
     parser.add_option("--nocutpagenumbers", action="store_false", dest="cutpagenumbers", default=True,
                       help="Do not try to cut page numbering on images [Default=True]")
     parser.add_option("-o", "--output", action="store", dest="output", default=None,
-                      help="Output generated EPUB to specified directory or file")
+                      help="Output generated file (EPUB or CBZ) to specified directory or file")
     parser.add_option("-v", "--verbose", action="store_true", dest="verbose", default=False,
                       help="Verbose output [Default=False]")
     options, args = parser.parse_args(argv)
@@ -593,25 +595,40 @@ def main(argv=None):
     if options.imgproc:
         print "Processing images..."
         dirImgProcess(path + "/OEBPS/Images/")
-    print "\nCreating ePub structure..."
-    genEpubStruct(path)
-    # actually zip the ePub
-    if options.output is not None:
-        if options.output.endswith('.epub'):
-            epubpath = os.path.abspath(options.output)
-        elif os.path.isdir(args[0]):
-            epubpath = os.path.abspath(options.output) + "/" + os.path.basename(args[0]) + '.epub'
-        else:
-            epubpath = os.path.abspath(options.output) + "/" \
-                + os.path.basename(os.path.splitext(args[0])[0]) + '.epub'
-    elif os.path.isdir(args[0]):
-        epubpath = args[0] + '.epub'
+    if options.cbzoutput:
+        # if CBZ output wanted, compress all images and return filepath
+        print "\nCreating CBZ file..."
+        filepath = getOutputFilename(args[0], options.output, '.cbz')
+        make_archive(path + '_comic', 'zip', path + '/OEBPS/Images')
     else:
-        epubpath = os.path.splitext(args[0])[0] + '.epub'
-    make_archive(path + '_comic', 'zip', path)
-    move(path + '_comic.zip', epubpath)
+        print "\nCreating ePub structure..."
+        genEpubStruct(path)
+        # actually zip the ePub
+        filepath = getOutputFilename(args[0], options.output, '.epub')
+        make_archive(path + '_comic', 'zip', path)
+    move(path + '_comic.zip', filepath)
     rmtree(path)
-    return epubpath
+    return filepath
+
+
+def getOutputFilename(srcpath, wantedname, ext):
+    if not ext.startswith('.'):
+        ext = '.' + ext
+    if wantedname is not None:
+        if wantedname.endswith(ext):
+            filename = os.path.abspath(wantedname)
+        elif os.path.isdir(srcpath):
+            filename = os.path.abspath(options.output) + "/" + os.path.basename(srcpath) + ext
+        else:
+            filename = os.path.abspath(options.output) + "/" \
+                       + os.path.basename(os.path.splitext(srcpath)[0]) + ext
+    elif os.path.isdir(srcpath):
+        filename = srcpath + ext
+    else:
+        filename = os.path.splitext(srcpath)[0] + ext
+    if os.path.isfile(filename):
+        filename = os.path.splitext(filename)[0] + '_kcc' + ext
+    return filename
 
 
 def checkOptions():
diff --git a/kcc/gui.py b/kcc/gui.py
index d00c1b2..a7d31e0 100644
--- a/kcc/gui.py
+++ b/kcc/gui.py
@@ -93,31 +93,33 @@ class MainWindow:
 
         self.options = {
             'Aepub_only': IntVar(None, 0),
-            'Bmangastyle': IntVar(None, 0),
-            'Cnopanelviewhq': IntVar(None, 0),
-            'Dimage_preprocess': IntVar(None, 0),
-            'Eforcepng': IntVar(None, 0),
-            'Fimage_gamma': DoubleVar(None, 0.0),
-            'Gimage_upscale': IntVar(None, 0),
-            'Himage_stretch': IntVar(None, 0),
-            'Iblack_borders': IntVar(None, 0),
-            'Jrotate': IntVar(None, 0),
-            'Knosplitrotate': IntVar(None, 0),
-            'Lcut_page_numbers': IntVar(None, 0)
+            'Bcbz_only': IntVar(None, 0),
+            'Cmangastyle': IntVar(None, 0),
+            'Dnopanelviewhq': IntVar(None, 0),
+            'Eimage_preprocess': IntVar(None, 0),
+            'Fforcepng': IntVar(None, 0),
+            'Gimage_gamma': DoubleVar(None, 0.0),
+            'Himage_upscale': IntVar(None, 0),
+            'Iimage_stretch': IntVar(None, 0),
+            'Jblack_borders': IntVar(None, 0),
+            'Krotate': IntVar(None, 0),
+            'Lnosplitrotate': IntVar(None, 0),
+            'Mcut_page_numbers': IntVar(None, 0)
         }
         self.optionlabels = {
             'Aepub_only': "Generate EPUB only",
-            'Bmangastyle': "Manga mode",
-            'Cnopanelviewhq': "Disable high quality Panel View",
-            'Dimage_preprocess': "Disable image optimizations",
-            'Eforcepng': "Create PNG files instead JPEG",
-            'Fimage_gamma': "Custom gamma correction",
-            'Gimage_upscale': "Allow image upscaling",
-            'Himage_stretch': "Stretch images",
-            'Iblack_borders': "Use black borders",
-            'Jrotate': "Rotate images instead splitting them",
-            'Knosplitrotate': "Disable splitting and rotation",
-            'Lcut_page_numbers': "Disable page numbers cutting"
+            'Bcbz_only': "Generate CBZ (skip EPUB/Mobi generation)",
+            'Cmangastyle': "Manga mode",
+            'Dnopanelviewhq': "Disable high quality Panel View",
+            'Eimage_preprocess': "Disable image optimizations",
+            'Fforcepng': "Create PNG files instead of JPEG",
+            'Gimage_gamma': "Custom gamma correction",
+            'Himage_upscale': "Allow image upscaling",
+            'Iimage_stretch': "Stretch images",
+            'Jblack_borders': "Use black borders (instead of white ones)",
+            'Krotate': "Rotate images (instead of splitting them)",
+            'Lnosplitrotate': "Disable both splitting and rotation",
+            'Mcut_page_numbers': "Disable page numbers cutting"
         }
         self.optionsButtons = {}
         for key in sorted(self.options):
@@ -162,28 +164,30 @@ class MainWindow:
             return
         profilekey = ProfileData.ProfileLabels[self.profile.get()]
         argv = ["-p", profilekey]
-        if self.options['Bmangastyle'].get() == 1:
+        if self.options['Bcbz_only'].get() == 1:
+            argv.append("-c")
+        if self.options['Cmangastyle'].get() == 1:
             argv.append("-m")
-        if self.options['Cnopanelviewhq'].get() == 1:
+        if self.options['Dnopanelviewhq'].get() == 1:
             argv.append("--nopanelviewhq")
-        if self.options['Dimage_preprocess'].get() == 1:
+        if self.options['Eimage_preprocess'].get() == 1:
             argv.append("--noprocessing")
-        if self.options['Eforcepng'].get() == 1:
+        if self.options['Fforcepng'].get() == 1:
             argv.append("--forcepng")
-        if self.options['Fimage_gamma'].get() != 0.0:
+        if self.options['Gimage_gamma'].get() != 0.0:
             argv.append("--gamma")
-            argv.append(self.options['Fimage_gamma'].get())
-        if self.options['Gimage_upscale'].get() == 1:
+            argv.append(self.options['Gimage_gamma'].get())
+        if self.options['Himage_upscale'].get() == 1:
             argv.append("--upscale")
-        if self.options['Himage_stretch'].get() == 1:
+        if self.options['Iimage_stretch'].get() == 1:
             argv.append("--stretch")
-        if self.options['Iblack_borders'].get() == 1:
+        if self.options['Jblack_borders'].get() == 1:
             argv.append("--blackborders")
-        if self.options['Jrotate'].get() == 1:
+        if self.options['Krotate'].get() == 1:
             argv.append("--rotate")
-        if self.options['Knosplitrotate'].get() == 1:
+        if self.options['Lnosplitrotate'].get() == 1:
             argv.append("--nosplitrotate")
-        if self.options['Lcut_page_numbers'].get() == 1:
+        if self.options['Mcut_page_numbers'].get() == 1:
             argv.append("--nocutpagenumbers")
         errors = False
         left_files = len(self.filelist)
@@ -207,7 +211,7 @@ class MainWindow:
                                                     (subargv[-1], str(err), traceback.format_tb(traceback_)))
                 errors = True
                 continue
-            if self.options['Aepub_only'].get() == 0:
+            if self.options['Aepub_only'].get() == 0 and self.options['Bcbz_only'].get() == 0:
                 try:
                     if os.path.getsize(epub_path) > 314572800:
                         # do not call kindlegen if source is bigger than 300MB