If you’re running AMP for fast loading pages on the mobile web (and, if you’re not, you should give it a try, it’s awesome!), you maybe got a notification in Search Console (AKA Google Webmaster Tools) that “Image size smaller than recommended size” for some or all of your AMP content.
Warning
Explore a collection of insightful blog posts on "Warning" at robinjescott.com. Delve into the importance and implications of warnings in various contexts.