All vanilla with no dependencies, or use official wrappers for the component framework of your choice
Interface will automatically resize if the image size changes because of responsive CSS rules.
Touch support tested with Android, iOS, and Chromebook. Mouse and touch are simultaneous and automatic.
Single cropping widgets are so boring widgets on the same stage are the doorway to advanced interfaces.
Webpack'd for your convenience, the full source code is open, easy to develop with, and MIT licensed.
Create complex interactivity that transcends mere cropping using the well-documented API.