diff --git a/Demo_Img_Viewer.py b/Demo_Img_Viewer.py
deleted file mode 100644
index f09dc561..00000000
--- a/Demo_Img_Viewer.py
+++ /dev/null
@@ -1,115 +0,0 @@
-import PySimpleGUI as sg
-import os
-from PIL import Image, ImageTk
-import io
-"""
-Simple Image Browser based on PySimpleGUI
---------------------------------------------
-There are some improvements compared to the PNG browser of the repository:
-1. Paging is cyclic, i.e. automatically wraps around if file index is outside
-2. Supports all file types that are valid PIL images
-3. Limits the maximum form size to the physical screen
-4. When selecting an image from the listbox, subsequent paging uses its index
-5. Paging performance improved significantly because of using PIL
-
-Dependecies
-------------
-Python v3
-PIL
-"""
-# Get the folder containing the images from the user
-rc, folder = sg.GetPathBox('Image Browser', 'Image folder to open', default_path='')
-if not rc or not folder:
-    sg.MsgBoxCancel('Cancelling')
-    raise SystemExit()
-
-# PIL supported image types
-img_types = (".png", ".jpg", "jpeg", ".tiff", ".bmp")
-
-# get list of files in folder
-flist0 = os.listdir(folder)
-
-# create sub list of image files (no sub folders, no wrong file types)
-fnames = [f for f in flist0 if os.path.isfile(os.path.join(folder,f)) and f.lower().endswith(img_types)]
-
-num_files = len(fnames)                # number of iamges found
-if num_files == 0:
-    sg.MsgBox('No files in folder')
-    raise SystemExit()
-
-del flist0                             # no longer needed
-
-#------------------------------------------------------------------------------
-# use PIL to read data of one image
-#------------------------------------------------------------------------------
-def get_img_data(f, maxsize = (1200, 850), first = False):
-    """Generate image data using PIL
-    """
-    img = Image.open(f)
-    img.thumbnail(maxsize)
-    if first:                     # tkinter is inactive the first time
-        bio = io.BytesIO()
-        img.save(bio, format = "PNG")
-        del img
-        return bio.getvalue()
-    return ImageTk.PhotoImage(img)
-#------------------------------------------------------------------------------
-
-
-# create the form that also returns keyboard events
-form = sg.FlexForm('Image Browser', return_keyboard_events=True,
-                   location=(0, 0), use_default_focus=False)
-
-# make these 2 elements outside the layout as we want to "update" them later
-# initialize to the first file in the list
-filename = os.path.join(folder, fnames[0])  # name of first file in list
-image_elem = sg.Image(data = get_img_data(filename, first = True))
-filename_display_elem = sg.Text(filename, size=(80, 3))
-file_num_display_elem = sg.Text('File 1 of {}'.format(num_files), size=(15,1))
-
-# define layout, show and read the form
-col = [[filename_display_elem],
-          [image_elem]]
-
-col_files = [[sg.Listbox(values = fnames, select_submits=True, size=(60,30), key='listbox')],
-             [sg.ReadFormButton('Next', size=(8,2)), sg.ReadFormButton('Prev',
-                             size=(8,2)), file_num_display_elem]]
-
-layout = [[sg.Column(col_files), sg.Column(col)]]
-
-form.Layout(layout)          # Shows form on screen
-
-# loop reading the user input and displaying image, filename
-i=0
-while True:
-    # read the form
-    button, values = form.Read()
-
-    # perform button and keyboard operations
-    if button is None:
-        break
-    elif button in ('Next', 'MouseWheel:Down', 'Down:40', 'Next:34'):
-        i += 1
-        if i >= num_files:
-            i -= num_files
-        filename = os.path.join(folder, fnames[i])
-    elif button in ('Prev', 'MouseWheel:Up', 'Up:38', 'Prior:33'):
-        i -= 1
-        if i < 0:
-            i = num_files + i
-        filename = os.path.join(folder, fnames[i])
-    elif button in ('Read', ''):            # something from the listbox
-        f = values["listbox"][0]            # selected filename
-        filename = os.path.join(folder, f)  # read this file
-        i = fnames.index(f)                 # update running index
-    else:
-        filename = os.path.join(folder, fnames[i])
-
-    # update window with new image
-    image_elem.Update(data=get_img_data(filename))
-    # update window with filename
-    filename_display_elem.Update(filename)
-    # update page display
-    file_num_display_elem.Update('File {} of {}'.format(i+1, num_files))
-
-