Optimizing images is the easiest way to boost your site’s speed and search...

https://telegra.ph/How-Can-I-Test-If-My-Images-Are-Slowing-Down-My-Site-04-28

Optimizing images is the easiest way to boost your site’s speed and search visibility. Start by renaming files with descriptive keywords instead of generic strings, and always include helpful alt text for accessibility and ranking