UI Components / Cropper
In your Backendless App, go to the Marketplace -> User Interface tab and install the Cropper componentInstall the component to the UI Container of your choice

Cropper

This is a component for Backendless UI-Builder designer
based on the Cropper.js library.

The component allows you to select any area of the image
and then download it as a separate file or save it to the server.

UI Components / Cropper