Resize images for website and amazon store - URGENT - Need these completing by Sunday

Hi, I am looking for someone to resize my images and add a grey background to one set for our website.

I need :

1 set with a grey background with the shoe re-positioned in the square, so they will look consistent on my website. Canvas size needs to be 1600x 1600.
1 set with a white background with the shoe re-positioned in the square, so they will look consistent on my website. Canvas size needs to be 1600x 1600.

Images need to be saved in the original google drive folder (name one folder white and one grey), I will provide.

There are about 400 images. I need these completing by Sunday evening.