In Atomy there are several sizes for the images, below is a list of recommended sizes.
These measurements refer to a minimum size that the image should have.

Section Slider -> 4000×2000 px

Section Card-> Card 1 1000x2000px – Card 2 800x2000px – Card 3 1000x600px – Card 4 1000x1000px

Section Card With Sidebar -> Card 1000x400px – News Slider 1500x1130px Small four News 200x150px

Article -> 1500x800px

Section Team -> 300x400px

Section Carousel Product -> 270x435px

Section Portfolio -> 1200x800px

Section Testimonial -> 250x300px

Section Slide -> 400x500px

Category -> 1000x550px