Okay kiddo, so you know when you take a picture on your phone or camera, it creates a file that lets you see the picture? Well, some people want the pictures to take up less space on their phone or computer so they can fit more pictures.
This is where high efficiency image file format comes in! It's a special way to make the picture file smaller while still keeping the same quality of the picture. It's like squishing a big marshmallow into a small one without making it look all smooshed.
This special way of making the file smaller is called compression. It's like when you squish all your stuffed animals in your toy box so they take up less space, but they still look and feel the same.
When you use high efficiency image file format, you can keep more pictures on your phone or computer without it taking up too much space. It's like magic!