Optimizing your images play an important role in web accessibility. Having images that are too large causes your website to load slowly and become less accessible. This could be the number one cause of someone leaving your website to visit another website to get the information that they needed.
When designing the website, image optimization is ranked number 2, after video and even more important than any code, fonts, scripts, and content. Being able to complete backups faster is always a huge help. The articles mentioned images with WebP file extension because of their good optimization, but not all browsers support WebP files, so, it is best to use .jpg and .png file extensions to be on the safe side.