diff --git a/resize.py b/resize.py
index 794d6fb..63360ce 100644
--- a/resize.py
+++ b/resize.py
@@ -6,9 +6,15 @@ import sys
 from voussoirkit import imagetools
 from voussoirkit import winglob
 
-filenames = sys.argv[1]
-
-def resize(filename, new_x=None, new_y=None, scale=None, nearest_neighbor=False):
+def resize(
+        filename,
+        new_x=None,
+        new_y=None,
+        *,
+        inplace=False,
+        nearest_neighbor=False,
+        scale=None,
+    ):
     i = Image.open(filename)
 
     (image_width, image_height) = i.size
@@ -18,7 +24,6 @@ def resize(filename, new_x=None, new_y=None, scale=None, nearest_neighbor=False)
     elif scale:
         new_x = int(image_width * scale)
         new_y = int(image_height * scale)
-    print(new_x, new_y)
 
     if new_x == 0:
         (new_x, new_y) = imagetools.fit_into_bounds(image_width, image_height, 10000000, new_y)
@@ -30,9 +35,13 @@ def resize(filename, new_x=None, new_y=None, scale=None, nearest_neighbor=False)
         i = i.resize( (new_x, new_y), Image.NEAREST)
     else:
         i = i.resize( (new_x, new_y), Image.ANTIALIAS)
-    suffix = '_{width}x{height}'.format(width=new_x, height=new_y)
-    (base, extension) = os.path.splitext(filename)
-    newname = base + suffix + extension
+
+    if inplace:
+        newname = filename
+    else:
+        suffix = '_{width}x{height}'.format(width=new_x, height=new_y)
+        (base, extension) = os.path.splitext(filename)
+        newname = base + suffix + extension
     i.save(newname, quality=100)
 
 
@@ -45,6 +54,7 @@ def resize_argparse(args):
             args.new_y,
             scale=args.scale,
             nearest_neighbor=args.nearest_neighbor,
+            inplace=args.inplace,
         )
 
 def main(argv):
@@ -55,6 +65,7 @@ def main(argv):
     parser.add_argument('new_y', nargs='?', type=int, default=None)
     parser.add_argument('--scale', dest='scale', type=float, default=None)
     parser.add_argument('--nearest', dest='nearest_neighbor', action='store_true')
+    parser.add_argument('--inplace', dest='inplace', action='store_true')
     parser.set_defaults(func=resize_argparse)
 
     args = parser.parse_args(argv)