Find reference and product photos

I need to generate references images of differing dimensions (which i will define eg: 400px X 250px)

- Each set of 20 images will be based on an industry type. ie: fashion, baby, cars etc..
- Crop the images to fit the given dimensions.
- All need to be exported/saved as jpg
- There are 36 industries, so 720 images in total.

Anyone with some basic photoshop knowledge will be able to complete easily.

I have access to all the starting images, so you just need to crop and export them.