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

Dropzone

Dropzone is a component for Backendless UI-Builder designer
based on the Dropzone UI library.
The component covers all the main features of the library and
provides a way to upload files to a server.

UI Components / Dropzone