Hi JohanT,In AEM 6.4, focal point is part of OOTB feature.
Unfortunately, in AEM 6.3, it requires custom solution to achieve such
requirements. There's a number of front-end tool that you might want to
look into:Focal Point: Pure HTML/CSS Adaptive Images FrameworkNodeJS,
The Focal Point, library that you might also want to take a look. See
the demo here: GitHub & BitBucket HTML Preview