with BytesIO(b64decode(sku['image'])) as in_file,\
     BytesIO() as raw_file,\
     BytesIO() as out_file:
    uu.decode(in_file=in_file, out_file=raw_file)
    editor = Image.open(raw_file)

    MAX_SIZE = 4472
    width,height = editor.size
    original_size = max(width, height)
    is_landscape = width > height
    if original_size >= MAX_SIZE:
        if is_landscape:
            resized_width = MAX_SIZE
            resized_height = int(round((MAX_SIZE/float(width))*height))
        else:
            resized_height = MAX_SIZE
            resized_width = int(rount((MAX_SIZE/float(height))*width))
        editor = editor.resize((resized_width, resized_height), Image.LANCZOS)

    editor.save(out_file, format='PNG')