Focal Point allows you to specify a targeted area of the image to retain (the
focal point). This way, when the framework crops your image, it will do so in a
way that ensures that your picture still looks great.

https://designshack.net/articles/mobile/focal-point-intelligent-cropping-of-responsive-images/
https://github.com/adamdbradley/focal-point
https://github.com/jonom/jquery-focuspoint