Mass simple clipping of photos - how?

Question

Image processing

Hello, there are about 5 thousand photos, you need to crop, remove the background from the images (replace with white).
The clipping itself is quite simple, it is done at once in pixelmator, but the number of photos is colossal, I'm thinking about automation. I saw 1 service, there, according to our volume of 10k, it will rise. Are there simple background removal tools?