Scan a folder and reduce and jpgs larger then 3 MB to 1024x786 resolution.

image_resize.py

from PIL import Image
from resizeimage import resizeimage
import os
dir = 'C:\Users\chouw\Documents\pictures'
for dirname,subdirlist,flist in os.walk(dir):
    for fname in flist:
        if fname.lower().endswith('.jpg'):
            if os.stat(dir+"\\"+fname).st_size > 3000:
                print "resize {}".format(fname),
                with open(dir+"\\"+fname, 'r+b') as f:
                    with Image.open(f) as image:
                        red_img = resizeimage.resize_contain(image, [1024, 768])
                        red_img.save('1024x768'+fname, image.format)
                        print "done resizing... now moving..."
                        os.rename(os.path.join(os.getcwd(),'1024x768'+fname), os.path.join(os.getcwd()+"\\Reduced Pictures",'1024x768'+fname))
print "done resizing and moving... closing now"