Answer:
All About The Space. Since many websites use certain image formats to save space and bandwidth, different types of files are used. the most widely used on sites are JPG (JPEG) or GIF images. These are done to save space. And in some cases certain sizes may stretch the image/photo to where it looks silly or bad, that's why there are also small versions.
Step-by-step explanation:
Different sizes for different occasions
-Hope This Helps!